Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

53 files changed, 12217 insertions, 0 deletions

diff --git a/extensions/permissions/Permission.cpp b/extensions/permissions/Permission.cpp
new file mode 100644
index 0000000000..adec3689cf
--- /dev/null
+++ b/extensions/permissions/Permission.cpp
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Permission.h"
+#include "nsIClassInfoImpl.h"
+#include "nsIEffectiveTLDService.h"
+#include "nsNetCID.h"
+#include "nsNetUtil.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/StaticPrefs_permissions.h"
+#include "mozilla/PermissionManager.h"
+
+namespace mozilla {
+
+// Permission Implementation
+
+NS_IMPL_CLASSINFO(Permission, nullptr, 0, {0})
+NS_IMPL_ISUPPORTS_CI(Permission, nsIPermission)
+
+Permission::Permission(nsIPrincipal* aPrincipal, const nsACString& aType,
+                       uint32_t aCapability, uint32_t aExpireType,
+                       int64_t aExpireTime, int64_t aModificationTime)
+    : mPrincipal(aPrincipal),
+      mType(aType),
+      mCapability(aCapability),
+      mExpireType(aExpireType),
+      mExpireTime(aExpireTime),
+      mModificationTime(aModificationTime) {}
+
+already_AddRefed<nsIPrincipal> Permission::ClonePrincipalForPermission(
+    nsIPrincipal* aPrincipal) {
+  MOZ_ASSERT(aPrincipal);
+
+  mozilla::OriginAttributes attrs = aPrincipal->OriginAttributesRef();
+  PermissionManager::MaybeStripOriginAttributes(false, attrs);
+
+  nsAutoCString originNoSuffix;
+  nsresult rv = aPrincipal->GetOriginNoSuffix(originNoSuffix);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  nsCOMPtr<nsIURI> uri;
+  rv = NS_NewURI(getter_AddRefs(uri), originNoSuffix);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  return mozilla::BasePrincipal::CreateContentPrincipal(uri, attrs);
+}
+
+already_AddRefed<Permission> Permission::Create(
+    nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t aCapability,
+    uint32_t aExpireType, int64_t aExpireTime, int64_t aModificationTime) {
+  NS_ENSURE_TRUE(aPrincipal, nullptr);
+
+  nsCOMPtr<nsIPrincipal> principal =
+      Permission::ClonePrincipalForPermission(aPrincipal);
+  NS_ENSURE_TRUE(principal, nullptr);
+
+  RefPtr<Permission> permission =
+      new Permission(principal, aType, aCapability, aExpireType, aExpireTime,
+                     aModificationTime);
+  return permission.forget();
+}
+
+NS_IMETHODIMP
+Permission::GetPrincipal(nsIPrincipal** aPrincipal) {
+  nsCOMPtr<nsIPrincipal> copy = mPrincipal;
+  copy.forget(aPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::GetType(nsACString& aType) {
+  aType = mType;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::GetCapability(uint32_t* aCapability) {
+  *aCapability = mCapability;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::GetExpireType(uint32_t* aExpireType) {
+  *aExpireType = mExpireType;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::GetExpireTime(int64_t* aExpireTime) {
+  *aExpireTime = mExpireTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::GetModificationTime(int64_t* aModificationTime) {
+  *aModificationTime = mModificationTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Permission::Matches(nsIPrincipal* aPrincipal, bool aExactHost, bool* aMatches) {
+  NS_ENSURE_ARG_POINTER(aPrincipal);
+  NS_ENSURE_ARG_POINTER(aMatches);
+
+  return mPrincipal->EqualsForPermission(aPrincipal, aExactHost, aMatches);
+}
+
+NS_IMETHODIMP
+Permission::MatchesURI(nsIURI* aURI, bool aExactHost, bool* aMatches) {
+  NS_ENSURE_ARG_POINTER(aURI);
+
+  mozilla::OriginAttributes attrs;
+  nsCOMPtr<nsIPrincipal> principal =
+      mozilla::BasePrincipal::CreateContentPrincipal(aURI, attrs);
+  NS_ENSURE_TRUE(principal, NS_ERROR_FAILURE);
+
+  return Matches(principal, aExactHost, aMatches);
+}
+
+}  // namespace mozilla
diff --git a/extensions/permissions/Permission.h b/extensions/permissions/Permission.h
new file mode 100644
index 0000000000..0d304a48c7
--- /dev/null
+++ b/extensions/permissions/Permission.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_Permission_h
+#define mozilla_Permission_h
+
+#include "nsIPermission.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+////////////////////////////////////////////////////////////////////////////////
+
+class Permission : public nsIPermission {
+ public:
+  // nsISupports
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIPERMISSION
+
+  static already_AddRefed<Permission> Create(
+      nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t aCapability,
+      uint32_t aExpireType, int64_t aExpireTime, int64_t aModificationTime);
+
+  // This method creates a new nsIPrincipal with a stripped OriginAttributes (no
+  // userContextId) and a content principal equal to the origin of 'aPrincipal'.
+  static already_AddRefed<nsIPrincipal> ClonePrincipalForPermission(
+      nsIPrincipal* aPrincipal);
+
+ protected:
+  Permission(nsIPrincipal* aPrincipal, const nsACString& aType,
+             uint32_t aCapability, uint32_t aExpireType, int64_t aExpireTime,
+             int64_t aModificationTime);
+
+  virtual ~Permission() = default;
+
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+  nsCString mType;
+  uint32_t mCapability;
+  uint32_t mExpireType;
+  int64_t mExpireTime;
+  int64_t mModificationTime;
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_Permission_h
diff --git a/extensions/permissions/PermissionDelegateHandler.cpp b/extensions/permissions/PermissionDelegateHandler.cpp
new file mode 100644
index 0000000000..b81943c9b9
--- /dev/null
+++ b/extensions/permissions/PermissionDelegateHandler.cpp
@@ -0,0 +1,403 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/PermissionDelegateHandler.h"
+
+#include "nsGlobalWindowInner.h"
+#include "nsPIDOMWindow.h"
+#include "nsIPrincipal.h"
+#include "nsContentPermissionHelper.h"
+
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/StaticPrefs_permissions.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/FeaturePolicyUtils.h"
+#include "mozilla/dom/WindowContext.h"
+#include "mozilla/PermissionManager.h"
+
+using namespace mozilla::dom;
+
+namespace mozilla {
+
+typedef PermissionDelegateHandler::PermissionDelegatePolicy DelegatePolicy;
+typedef PermissionDelegateHandler::PermissionDelegateInfo DelegateInfo;
+
+// Particular type of permissions to care about. We decide cases by case and
+// give various types of controls over each of these.
+static const DelegateInfo sPermissionsMap[] = {
+    // Permissions API map. All permission names have to be in lowercase.
+    {"geo", u"geolocation", DelegatePolicy::eDelegateUseFeaturePolicy},
+    // The same with geo, but we support both to save some conversions between
+    // "geo" and "geolocation"
+    {"geolocation", u"geolocation", DelegatePolicy::eDelegateUseFeaturePolicy},
+    {"desktop-notification", nullptr,
+     DelegatePolicy::ePersistDeniedCrossOrigin},
+    {"persistent-storage", nullptr, DelegatePolicy::ePersistDeniedCrossOrigin},
+    {"vibration", nullptr, DelegatePolicy::ePersistDeniedCrossOrigin},
+    {"midi", nullptr, DelegatePolicy::eDelegateUseIframeOrigin},
+    // Like "midi" but with sysex support.
+    {"midi-sysex", nullptr, DelegatePolicy::eDelegateUseIframeOrigin},
+    {"storage-access", nullptr, DelegatePolicy::eDelegateUseIframeOrigin},
+    {"camera", u"camera", DelegatePolicy::eDelegateUseFeaturePolicy},
+    {"microphone", u"microphone", DelegatePolicy::eDelegateUseFeaturePolicy},
+    {"screen", u"display-capture", DelegatePolicy::eDelegateUseFeaturePolicy},
+    {"xr", u"xr-spatial-tracking", DelegatePolicy::eDelegateUseFeaturePolicy},
+};
+
+static_assert(PermissionDelegateHandler::DELEGATED_PERMISSION_COUNT ==
+                  (sizeof(sPermissionsMap) / sizeof(DelegateInfo)),
+              "The PermissionDelegateHandler::DELEGATED_PERMISSION_COUNT must "
+              "match to the "
+              "length of sPermissionsMap. Please update it.");
+
+NS_IMPL_CYCLE_COLLECTION(PermissionDelegateHandler)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(PermissionDelegateHandler)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(PermissionDelegateHandler)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PermissionDelegateHandler)
+  NS_INTERFACE_MAP_ENTRY(nsIPermissionDelegateHandler)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+PermissionDelegateHandler::PermissionDelegateHandler(dom::Document* aDocument)
+    : mDocument(aDocument) {
+  MOZ_ASSERT(aDocument);
+}
+
+/* static */
+const DelegateInfo* PermissionDelegateHandler::GetPermissionDelegateInfo(
+    const nsAString& aPermissionName) {
+  nsAutoString lowerContent(aPermissionName);
+  ToLowerCase(lowerContent);
+
+  for (const auto& perm : sPermissionsMap) {
+    if (lowerContent.EqualsASCII(perm.mPermissionName)) {
+      return &perm;
+    }
+  }
+
+  return nullptr;
+}
+
+NS_IMETHODIMP
+PermissionDelegateHandler::MaybeUnsafePermissionDelegate(
+    const nsTArray<nsCString>& aTypes, bool* aMaybeUnsafe) {
+  *aMaybeUnsafe = false;
+  if (!StaticPrefs::permissions_delegation_enabled()) {
+    return NS_OK;
+  }
+
+  for (auto& type : aTypes) {
+    const DelegateInfo* info =
+        GetPermissionDelegateInfo(NS_ConvertUTF8toUTF16(type));
+    if (!info) {
+      continue;
+    }
+
+    nsAutoString featureName(info->mFeatureName);
+    if (FeaturePolicyUtils::IsFeatureUnsafeAllowedAll(mDocument, featureName)) {
+      *aMaybeUnsafe = true;
+      return NS_OK;
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionDelegateHandler::GetPermissionDelegateFPEnabled(bool* aEnabled) {
+  MOZ_ASSERT(NS_IsMainThread());
+  *aEnabled = StaticPrefs::permissions_delegation_enabled();
+  return NS_OK;
+}
+
+/* static */
+nsresult PermissionDelegateHandler::GetDelegatePrincipal(
+    const nsACString& aType, nsIContentPermissionRequest* aRequest,
+    nsIPrincipal** aResult) {
+  MOZ_ASSERT(aRequest);
+
+  if (!StaticPrefs::permissions_delegation_enabled()) {
+    return aRequest->GetPrincipal(aResult);
+  }
+
+  const DelegateInfo* info =
+      GetPermissionDelegateInfo(NS_ConvertUTF8toUTF16(aType));
+  if (!info) {
+    *aResult = nullptr;
+    return NS_OK;
+  }
+
+  if (info->mPolicy == DelegatePolicy::eDelegateUseTopOrigin ||
+      info->mPolicy == DelegatePolicy::eDelegateUseFeaturePolicy) {
+    return aRequest->GetTopLevelPrincipal(aResult);
+  }
+
+  return aRequest->GetPrincipal(aResult);
+}
+
+bool PermissionDelegateHandler::Initialize() {
+  MOZ_ASSERT(mDocument);
+
+  mPermissionManager = PermissionManager::GetInstance();
+  if (!mPermissionManager) {
+    return false;
+  }
+
+  mPrincipal = mDocument->NodePrincipal();
+  return true;
+}
+
+static bool IsCrossOriginContentToTop(Document* aDocument) {
+  MOZ_ASSERT(aDocument);
+
+  RefPtr<BrowsingContext> bc = aDocument->GetBrowsingContext();
+  if (!bc) {
+    return true;
+  }
+  RefPtr<BrowsingContext> topBC = bc->Top();
+
+  // In Fission, we can know if it is cross-origin by checking whether both
+  // contexts in the same process. So, If they are not in the same process, we
+  // can say that it's cross-origin.
+  if (!topBC->IsInProcess()) {
+    return true;
+  }
+
+  RefPtr<Document> topDoc = topBC->GetDocument();
+  if (!topDoc) {
+    return true;
+  }
+
+  nsCOMPtr<nsIPrincipal> topLevelPrincipal = topDoc->NodePrincipal();
+
+  return !aDocument->NodePrincipal()->Subsumes(topLevelPrincipal);
+}
+
+bool PermissionDelegateHandler::HasFeaturePolicyAllowed(
+    const DelegateInfo* info) const {
+  if (info->mPolicy != DelegatePolicy::eDelegateUseFeaturePolicy ||
+      !info->mFeatureName) {
+    return true;
+  }
+
+  nsAutoString featureName(info->mFeatureName);
+  return FeaturePolicyUtils::IsFeatureAllowed(mDocument, featureName);
+}
+
+bool PermissionDelegateHandler::HasPermissionDelegated(
+    const nsACString& aType) const {
+  MOZ_ASSERT(mDocument);
+
+  // System principal should have right to make permission request
+  if (mPrincipal->IsSystemPrincipal()) {
+    return true;
+  }
+
+  const DelegateInfo* info =
+      GetPermissionDelegateInfo(NS_ConvertUTF8toUTF16(aType));
+  if (!info || !HasFeaturePolicyAllowed(info)) {
+    return false;
+  }
+
+  if (!StaticPrefs::permissions_delegation_enabled()) {
+    return true;
+  }
+
+  if (info->mPolicy == DelegatePolicy::ePersistDeniedCrossOrigin &&
+      !mDocument->IsTopLevelContentDocument() &&
+      IsCrossOriginContentToTop(mDocument)) {
+    return false;
+  }
+
+  return true;
+}
+
+nsresult PermissionDelegateHandler::GetPermission(const nsACString& aType,
+                                                  uint32_t* aPermission,
+                                                  bool aExactHostMatch) {
+  MOZ_ASSERT(mDocument);
+  MOZ_ASSERT(mPrincipal);
+
+  if (mPrincipal->IsSystemPrincipal()) {
+    *aPermission = nsIPermissionManager::ALLOW_ACTION;
+    return NS_OK;
+  }
+
+  const DelegateInfo* info =
+      GetPermissionDelegateInfo(NS_ConvertUTF8toUTF16(aType));
+  if (!info || !HasFeaturePolicyAllowed(info)) {
+    *aPermission = nsIPermissionManager::DENY_ACTION;
+    return NS_OK;
+  }
+
+  nsresult (NS_STDCALL nsIPermissionManager::*testPermission)(
+      nsIPrincipal*, const nsACString&, uint32_t*) =
+      aExactHostMatch ? &nsIPermissionManager::TestExactPermissionFromPrincipal
+                      : &nsIPermissionManager::TestPermissionFromPrincipal;
+
+  if (!StaticPrefs::permissions_delegation_enabled()) {
+    return (mPermissionManager->*testPermission)(mPrincipal, aType,
+                                                 aPermission);
+  }
+
+  if (info->mPolicy == DelegatePolicy::ePersistDeniedCrossOrigin &&
+      !mDocument->IsTopLevelContentDocument() &&
+      IsCrossOriginContentToTop(mDocument)) {
+    *aPermission = nsIPermissionManager::DENY_ACTION;
+    return NS_OK;
+  }
+
+  nsIPrincipal* principal = mPrincipal;
+  // If we cannot get the browsing context from the document, we fallback to use
+  // the prinicpal of the document to test the permission.
+  RefPtr<BrowsingContext> bc = mDocument->GetBrowsingContext();
+
+  if ((info->mPolicy == DelegatePolicy::eDelegateUseTopOrigin ||
+       info->mPolicy == DelegatePolicy::eDelegateUseFeaturePolicy) &&
+      bc) {
+    RefPtr<WindowContext> topWC = bc->GetTopWindowContext();
+
+    if (topWC && topWC->IsInProcess()) {
+      // If the top-level window context is in the same process, we directly get
+      // the node principal from the top-level document to test the permission.
+      // We cannot check the lists in the window context in this case since the
+      // 'perm-changed' could be notified in the iframe before the top-level in
+      // certain cases, for example, request permissions in first-party iframes.
+      // In this case, the list in window context hasn't gotten updated, so it
+      // would has an out-dated value until the top-level window get the
+      // observer. So, we have to test permission manager directly if we can.
+      RefPtr<Document> topDoc = topWC->GetBrowsingContext()->GetDocument();
+
+      if (topDoc) {
+        principal = topDoc->NodePrincipal();
+      }
+    } else if (topWC) {
+      // Get the delegated permissions from the top-level window context.
+      DelegatedPermissionList list =
+          aExactHostMatch ? topWC->GetDelegatedExactHostMatchPermissions()
+                          : topWC->GetDelegatedPermissions();
+      size_t idx = std::distance(sPermissionsMap, info);
+      *aPermission = list.mPermissions[idx];
+      return NS_OK;
+    }
+  }
+
+  return (mPermissionManager->*testPermission)(principal, aType, aPermission);
+}
+
+nsresult PermissionDelegateHandler::GetPermissionForPermissionsAPI(
+    const nsACString& aType, uint32_t* aPermission) {
+  return GetPermission(aType, aPermission, false);
+}
+
+void PermissionDelegateHandler::PopulateAllDelegatedPermissions() {
+  MOZ_ASSERT(mDocument);
+  MOZ_ASSERT(mPermissionManager);
+
+  // We only populate the delegated permissions for the top-level content.
+  if (!mDocument->IsTopLevelContentDocument()) {
+    return;
+  }
+
+  RefPtr<WindowContext> wc = mDocument->GetWindowContext();
+  NS_ENSURE_TRUE_VOID(wc && !wc->IsDiscarded());
+
+  DelegatedPermissionList list;
+  DelegatedPermissionList exactHostMatchList;
+
+  for (const auto& perm : sPermissionsMap) {
+    size_t idx = std::distance(sPermissionsMap, &perm);
+
+    nsDependentCString type(perm.mPermissionName);
+    // Populate the permission.
+    uint32_t permission = nsIPermissionManager::UNKNOWN_ACTION;
+    Unused << mPermissionManager->TestPermissionFromPrincipal(mPrincipal, type,
+                                                              &permission);
+    list.mPermissions[idx] = permission;
+
+    // Populate the exact-host-match permission.
+    permission = nsIPermissionManager::UNKNOWN_ACTION;
+    Unused << mPermissionManager->TestExactPermissionFromPrincipal(
+        mPrincipal, type, &permission);
+    exactHostMatchList.mPermissions[idx] = permission;
+  }
+
+  WindowContext::Transaction txn;
+  txn.SetDelegatedPermissions(list);
+  txn.SetDelegatedExactHostMatchPermissions(exactHostMatchList);
+  MOZ_ALWAYS_SUCCEEDS(txn.Commit(wc));
+}
+
+void PermissionDelegateHandler::UpdateDelegatedPermission(
+    const nsACString& aType) {
+  MOZ_ASSERT(mDocument);
+  MOZ_ASSERT(mPermissionManager);
+
+  // We only update the delegated permission for the top-level content.
+  if (!mDocument->IsTopLevelContentDocument()) {
+    return;
+  }
+
+  RefPtr<WindowContext> wc = mDocument->GetWindowContext();
+  NS_ENSURE_TRUE_VOID(wc);
+
+  const DelegateInfo* info =
+      GetPermissionDelegateInfo(NS_ConvertUTF8toUTF16(aType));
+  if (!info) {
+    return;
+  }
+  size_t idx = std::distance(sPermissionsMap, info);
+
+  WindowContext::Transaction txn;
+  bool changed = false;
+  DelegatedPermissionList list = wc->GetDelegatedPermissions();
+
+  if (UpdateDelegatePermissionInternal(
+          list, aType, idx,
+          &nsIPermissionManager::TestPermissionFromPrincipal)) {
+    txn.SetDelegatedPermissions(list);
+    changed = true;
+  }
+
+  DelegatedPermissionList exactHostMatchList =
+      wc->GetDelegatedExactHostMatchPermissions();
+
+  if (UpdateDelegatePermissionInternal(
+          exactHostMatchList, aType, idx,
+          &nsIPermissionManager::TestExactPermissionFromPrincipal)) {
+    txn.SetDelegatedExactHostMatchPermissions(exactHostMatchList);
+    changed = true;
+  }
+
+  // We only commit if there is any change of permissions.
+  if (changed) {
+    MOZ_ALWAYS_SUCCEEDS(txn.Commit(wc));
+  }
+}
+
+bool PermissionDelegateHandler::UpdateDelegatePermissionInternal(
+    PermissionDelegateHandler::DelegatedPermissionList& aList,
+    const nsACString& aType, size_t aIdx,
+    nsresult (NS_STDCALL nsIPermissionManager::*aTestFunc)(nsIPrincipal*,
+                                                           const nsACString&,
+                                                           uint32_t*)) {
+  MOZ_ASSERT(aTestFunc);
+  MOZ_ASSERT(mPermissionManager);
+  MOZ_ASSERT(mPrincipal);
+
+  uint32_t permission = nsIPermissionManager::UNKNOWN_ACTION;
+  Unused << (mPermissionManager->*aTestFunc)(mPrincipal, aType, &permission);
+
+  if (aList.mPermissions[aIdx] != permission) {
+    aList.mPermissions[aIdx] = permission;
+    return true;
+  }
+
+  return false;
+}
+
+}  // namespace mozilla
diff --git a/extensions/permissions/PermissionDelegateHandler.h b/extensions/permissions/PermissionDelegateHandler.h
new file mode 100644
index 0000000000..a07fbceaeb
--- /dev/null
+++ b/extensions/permissions/PermissionDelegateHandler.h
@@ -0,0 +1,203 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Permission delegate handler provides a policy of how top-level can
+ * delegate permission to embedded iframes.
+ *
+ * This class includes a mechanism to delegate permission using feature
+ * policy. Feature policy will assure that only cross-origin iframes which
+ * have been explicitly granted access will have the opportunity to request
+ * permission.
+ *
+ * For example if an iframe has not been granted access to geolocation by
+ * Feature Policy, geolocation request from the iframe will be automatically
+ * denied. if the top-level origin already has access to geolocation and the
+ * iframe has been granted access to geolocation by Feature Policy, the iframe
+ * will also have access to geolocation. If the top-level frame did not have
+ * access to geolocation, and the iframe has been granted access to geolocation
+ * by Feature Policy, a request from the cross-origin iframe would trigger a
+ * prompt using of the top-level origin.
+ */
+
+#ifndef mozilla_PermissionDelegateHandler_h
+#define mozilla_PermissionDelegateHandler_h
+
+#include "mozilla/Array.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupports.h"
+#include "nsIPermissionDelegateHandler.h"
+#include "nsIPermissionManager.h"
+#include "nsCOMPtr.h"
+
+class nsIPrincipal;
+class nsIContentPermissionRequest;
+
+namespace mozilla {
+namespace dom {
+class Document;
+class WindowContext;
+}  // namespace dom
+
+class PermissionDelegateHandler final : public nsIPermissionDelegateHandler {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(PermissionDelegateHandler)
+
+  NS_DECL_NSIPERMISSIONDELEGATEHANDLER
+
+  explicit PermissionDelegateHandler() = default;
+  explicit PermissionDelegateHandler(mozilla::dom::Document* aDocument);
+
+  static constexpr size_t DELEGATED_PERMISSION_COUNT = 12;
+
+  typedef struct DelegatedPermissionList {
+    Array<uint32_t, DELEGATED_PERMISSION_COUNT> mPermissions;
+
+    bool operator==(const DelegatedPermissionList& aOther) const {
+      return mPermissions == aOther.mPermissions;
+    }
+  } DelegatedPermissionList;
+
+  bool Initialize();
+
+  /*
+   * Indicates if we has the right to make permission request with aType
+   */
+  bool HasPermissionDelegated(const nsACString& aType) const;
+
+  /*
+   * Get permission state, which applied permission delegate policy.
+   *
+   * @param aType the permission type to get
+   * @param aPermission out argument which will be a permission type that we
+   *                    will return from this function.
+   * @param aExactHostMatch whether to look for the exact host name or also for
+   *                        subdomains that can have the same permission.
+   */
+  nsresult GetPermission(const nsACString& aType, uint32_t* aPermission,
+                         bool aExactHostMatch);
+
+  /*
+   * Get permission state for permission api, which applied
+   * permission delegate policy.
+   *
+   * @param aType the permission type to get
+   * @param aExactHostMatch whether to look for the exact host name or also for
+   *                        subdomains that can have the same permission.
+   * @param aPermission out argument which will be a permission type that we
+   *                    will return from this function.
+   */
+  nsresult GetPermissionForPermissionsAPI(const nsACString& aType,
+                                          uint32_t* aPermission);
+
+  enum PermissionDelegatePolicy {
+    /* Always delegate permission from top level to iframe and the iframe
+     * should use top level origin to get/set permission.*/
+    eDelegateUseTopOrigin,
+
+    /* Permission is delegated using Feature Policy. Permission is denied by
+     * default in cross origin iframe and the iframe only could get/set
+     * permission if there's allow attribute set in iframe. e.g allow =
+     * "geolocation" */
+    eDelegateUseFeaturePolicy,
+
+    /* Persistent denied permissions in cross origin iframe */
+    ePersistDeniedCrossOrigin,
+
+    /* This is the old behavior of cross origin iframe permission. The
+     * permission delegation should not have an effect on iframe. The cross
+     * origin iframe get/set permissions by its origin */
+    eDelegateUseIframeOrigin,
+  };
+
+  /*
+   * Indicates matching between Feature Policy and Permissions name defined in
+   * Permissions Manager, not DOM Permissions API. Permissions API exposed in
+   * DOM only supports "geo" at the moment but Permissions Manager also supports
+   * "camera", "microphone".
+   */
+  typedef struct {
+    const char* mPermissionName;
+    const char16_t* mFeatureName;
+    PermissionDelegatePolicy mPolicy;
+  } PermissionDelegateInfo;
+
+  /**
+   * The loader maintains a weak reference to the document with
+   * which it is initialized. This call forces the reference to
+   * be dropped.
+   */
+  void DropDocumentReference() { mDocument = nullptr; }
+
+  /*
+   * Helper function to return the delegate info value for aPermissionName.
+   * @param aPermissionName the permission name to get
+   */
+  static const PermissionDelegateInfo* GetPermissionDelegateInfo(
+      const nsAString& aPermissionName);
+
+  /*
+   * Helper function to return the delegate principal. This will return nullptr,
+   * or request's principal or top level principal based on the delegate policy
+   * will be applied for a given type.
+   * We use this function when prompting, no need to perform permission check
+   * (deny/allow).
+   *
+   * @param aType the permission type to get
+   * @param aRequest  The request which the principal is get from.
+   * @param aResult out argument which will be a principal that we
+   *                will return from this function.
+   */
+  static nsresult GetDelegatePrincipal(const nsACString& aType,
+                                       nsIContentPermissionRequest* aRequest,
+                                       nsIPrincipal** aResult);
+
+  /**
+   * Populate all delegated permissions to the WindowContext of the associated
+   * document. We only populate the permissions for the top-level content.
+   */
+  void PopulateAllDelegatedPermissions();
+
+  /**
+   * Update the given delegated permission to the WindowContext. We only
+   * update it for the top-level content.
+   */
+  void UpdateDelegatedPermission(const nsACString& aType);
+
+ private:
+  ~PermissionDelegateHandler() = default;
+
+  /*
+   * Check whether the permission is blocked by FeaturePolicy directive.
+   * Default allowlist for a featureName of permission used in permissions
+   * delegate should be set to eSelf, to ensure that permission is denied by
+   * default and only have the opportunity to request permission with allow
+   * attribute.
+   */
+  bool HasFeaturePolicyAllowed(const PermissionDelegateInfo* info) const;
+
+  /**
+   * A helper function to test the permission and set the result to the given
+   * list. It will return true if the permission is changed, otherwise false.
+   */
+  bool UpdateDelegatePermissionInternal(
+      PermissionDelegateHandler::DelegatedPermissionList& aList,
+      const nsACString& aType, size_t aIdx,
+      nsresult (NS_STDCALL nsIPermissionManager::*aTestFunc)(nsIPrincipal*,
+                                                             const nsACString&,
+                                                             uint32_t*));
+
+  // A weak pointer to our document. Nulled out by DropDocumentReference.
+  mozilla::dom::Document* mDocument;
+
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+  RefPtr<nsIPermissionManager> mPermissionManager;
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_PermissionDelegateHandler_h
diff --git a/extensions/permissions/PermissionDelegateIPCUtils.h b/extensions/permissions/PermissionDelegateIPCUtils.h
new file mode 100644
index 0000000000..c570a587f5
--- /dev/null
+++ b/extensions/permissions/PermissionDelegateIPCUtils.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_permissiondelegateipcutils_h
+#define mozilla_permissiondelegateipcutils_h
+
+#include "ipc/IPCMessageUtils.h"
+
+#include "mozilla/PermissionDelegateHandler.h"
+
+namespace IPC {
+
+template <>
+struct ParamTraits<
+    mozilla::PermissionDelegateHandler::DelegatedPermissionList> {
+  typedef mozilla::PermissionDelegateHandler::DelegatedPermissionList paramType;
+
+  static void Write(MessageWriter* aWriter, const paramType& aParam) {
+    for (auto& permission : aParam.mPermissions) {
+      WriteParam(aWriter, permission);
+    }
+  }
+
+  static bool Read(MessageReader* aReader, paramType* aResult) {
+    for (auto& permission : aResult->mPermissions) {
+      if (!ReadParam(aReader, &permission)) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+};
+
+}  // namespace IPC
+
+#endif  // mozilla_permissiondelegateipcutils_h
diff --git a/extensions/permissions/PermissionManager.cpp b/extensions/permissions/PermissionManager.cpp
new file mode 100644
index 0000000000..f81d823470
--- /dev/null
+++ b/extensions/permissions/PermissionManager.cpp
@@ -0,0 +1,3928 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/AbstractThread.h"
+#include "mozilla/AppShutdown.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/ContentPrincipal.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/ExpandedPrincipal.h"
+#include "mozilla/net/NeckoMessageUtils.h"
+#include "mozilla/Permission.h"
+#include "mozilla/PermissionManager.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/StaticPrefs_permissions.h"
+#include "mozilla/Telemetry.h"
+
+#include "mozIStorageService.h"
+#include "mozIStorageConnection.h"
+#include "mozIStorageStatement.h"
+#include "mozStorageCID.h"
+
+#include "nsAppDirectoryServiceDefs.h"
+#include "nsComponentManagerUtils.h"
+#include "nsContentUtils.h"
+#include "nsCRT.h"
+#include "nsEffectiveTLDService.h"
+#include "nsIConsoleService.h"
+#include "nsIUserIdleService.h"
+#include "nsIInputStream.h"
+#include "nsINavHistoryService.h"
+#include "nsIObserverService.h"
+#include "nsIPrefBranch.h"
+#include "nsIPrincipal.h"
+#include "nsIURIMutator.h"
+#include "nsIWritablePropertyBag2.h"
+#include "nsReadLine.h"
+#include "nsTHashSet.h"
+#include "nsToolkitCompsCID.h"
+
+using namespace mozilla::dom;
+
+namespace mozilla {
+
+#define PERMISSIONS_FILE_NAME "permissions.sqlite"
+#define HOSTS_SCHEMA_VERSION 12
+
+// Default permissions are read from a URL - this is the preference we read
+// to find that URL. If not set, don't use any default permissions.
+constexpr char kDefaultsUrlPrefName[] = "permissions.manager.defaultsUrl";
+
+constexpr char kPermissionChangeNotification[] = PERM_CHANGE_NOTIFICATION;
+
+// A special value for a permission ID that indicates the ID was loaded as
+// a default value.  These will never be written to the database, but may
+// be overridden with an explicit permission (including UNKNOWN_ACTION)
+constexpr int64_t cIDPermissionIsDefault = -1;
+
+static StaticRefPtr<PermissionManager> gPermissionManager;
+
+#define ENSURE_NOT_CHILD_PROCESS_(onError)                 \
+  PR_BEGIN_MACRO                                           \
+  if (IsChildProcess()) {                                  \
+    NS_ERROR("Cannot perform action in content process!"); \
+    onError                                                \
+  }                                                        \
+  PR_END_MACRO
+
+#define ENSURE_NOT_CHILD_PROCESS \
+  ENSURE_NOT_CHILD_PROCESS_({ return NS_ERROR_NOT_AVAILABLE; })
+
+#define ENSURE_NOT_CHILD_PROCESS_NORET ENSURE_NOT_CHILD_PROCESS_(;)
+
+#define EXPIRY_NOW PR_Now() / 1000
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace {
+
+bool IsChildProcess() { return XRE_IsContentProcess(); }
+
+void LogToConsole(const nsAString& aMsg) {
+  nsCOMPtr<nsIConsoleService> console(
+      do_GetService("@mozilla.org/consoleservice;1"));
+  if (!console) {
+    NS_WARNING("Failed to log message to console.");
+    return;
+  }
+
+  nsAutoString msg(aMsg);
+  console->LogStringMessage(msg.get());
+}
+
+// NOTE: an empty string can be passed as aType - if it is this function will
+// return "false" unconditionally.
+bool HasDefaultPref(const nsACString& aType) {
+  // A list of permissions that can have a fallback default permission
+  // set under the permissions.default.* pref.
+  static const nsLiteralCString kPermissionsWithDefaults[] = {
+      "camera"_ns, "microphone"_ns, "geo"_ns, "desktop-notification"_ns,
+      "shortcuts"_ns};
+
+  if (!aType.IsEmpty()) {
+    for (const auto& perm : kPermissionsWithDefaults) {
+      if (perm.Equals(aType)) {
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+// These permissions are special permissions which must be transmitted to the
+// content process before documents with their principals have loaded within
+// that process.
+//
+// Permissions which are in this list are considered to have a "" permission
+// key, even if their principal would not normally have that key.
+static const nsLiteralCString kPreloadPermissions[] = {
+    // This permission is preloaded to support properly blocking service worker
+    // interception when a user has disabled storage for a specific site.  Once
+    // service worker interception moves to the parent process this should be
+    // removed.  See bug 1428130.
+    "cookie"_ns};
+
+// NOTE: nullptr can be passed as aType - if it is this function will return
+// "false" unconditionally.
+bool IsPreloadPermission(const nsACString& aType) {
+  if (!aType.IsEmpty()) {
+    for (const auto& perm : kPreloadPermissions) {
+      if (perm.Equals(aType)) {
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+// Array of permission types which should not be isolated by origin attributes,
+// for user context and private browsing.
+// Keep this array in sync with 'STRIPPED_PERMS' in
+// 'test_permmanager_oa_strip.js'
+// Currently only preloaded permissions are supported.
+// This is because perms are sent to the content process in bulk by perm key.
+// Non-preloaded, but OA stripped permissions would not be accessible by sites
+// in private browsing / non-default user context.
+static constexpr std::array<nsLiteralCString, 1> kStripOAPermissions = {
+    {"cookie"_ns}};
+
+bool IsOAForceStripPermission(const nsACString& aType) {
+  if (aType.IsEmpty()) {
+    return false;
+  }
+  for (const auto& perm : kStripOAPermissions) {
+    if (perm.Equals(aType)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// Array of permission prefixes which should be isolated only by site.
+// These site-scoped permissions are stored under their site's principal.
+// GetAllForPrincipal also needs to look for these especially.
+static constexpr std::array<nsLiteralCString, 2> kSiteScopedPermissions = {
+    {"3rdPartyStorage^"_ns, "AllowStorageAccessRequest^"_ns}};
+
+bool IsSiteScopedPermission(const nsACString& aType) {
+  if (aType.IsEmpty()) {
+    return false;
+  }
+  for (const auto& perm : kSiteScopedPermissions) {
+    if (aType.Length() >= perm.Length() &&
+        Substring(aType, 0, perm.Length()) == perm) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void OriginAppendOASuffix(OriginAttributes aOriginAttributes,
+                          bool aForceStripOA, nsACString& aOrigin) {
+  PermissionManager::MaybeStripOriginAttributes(aForceStripOA,
+                                                aOriginAttributes);
+
+  nsAutoCString oaSuffix;
+  aOriginAttributes.CreateSuffix(oaSuffix);
+  aOrigin.Append(oaSuffix);
+}
+
+nsresult GetOriginFromPrincipal(nsIPrincipal* aPrincipal, bool aForceStripOA,
+                                nsACString& aOrigin) {
+  nsresult rv = aPrincipal->GetOriginNoSuffix(aOrigin);
+  // The principal may belong to the about:blank content viewer, so this can be
+  // expected to fail.
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsAutoCString suffix;
+  rv = aPrincipal->GetOriginSuffix(suffix);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  OriginAttributes attrs;
+  NS_ENSURE_TRUE(attrs.PopulateFromSuffix(suffix), NS_ERROR_FAILURE);
+
+  OriginAppendOASuffix(attrs, aForceStripOA, aOrigin);
+
+  return NS_OK;
+}
+
+// Returns the site of the principal, including OA, given a principal.
+nsresult GetSiteFromPrincipal(nsIPrincipal* aPrincipal, bool aForceStripOA,
+                              nsACString& aSite) {
+  nsCOMPtr<nsIURI> uri = aPrincipal->GetURI();
+  nsEffectiveTLDService* etld = nsEffectiveTLDService::GetInstance();
+  NS_ENSURE_TRUE(etld, NS_ERROR_FAILURE);
+  NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
+  nsresult rv = etld->GetSite(uri, aSite);
+
+  // The principal may belong to the about:blank content viewer, so this can be
+  // expected to fail.
+  if (NS_FAILED(rv)) {
+    rv = aPrincipal->GetOrigin(aSite);
+    NS_ENSURE_SUCCESS(rv, rv);
+    return NS_OK;
+  }
+
+  nsAutoCString suffix;
+  rv = aPrincipal->GetOriginSuffix(suffix);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  OriginAttributes attrs;
+  NS_ENSURE_TRUE(attrs.PopulateFromSuffix(suffix), NS_ERROR_FAILURE);
+
+  OriginAppendOASuffix(attrs, aForceStripOA, aSite);
+
+  return NS_OK;
+}
+
+nsresult GetOriginFromURIAndOA(nsIURI* aURI,
+                               const OriginAttributes* aOriginAttributes,
+                               bool aForceStripOA, nsACString& aOrigin) {
+  nsAutoCString origin(aOrigin);
+  nsresult rv = ContentPrincipal::GenerateOriginNoSuffixFromURI(aURI, origin);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  OriginAppendOASuffix(*aOriginAttributes, aForceStripOA, origin);
+
+  aOrigin = origin;
+
+  return NS_OK;
+}
+
+nsresult GetPrincipalFromOrigin(const nsACString& aOrigin, bool aForceStripOA,
+                                nsIPrincipal** aPrincipal) {
+  nsAutoCString originNoSuffix;
+  OriginAttributes attrs;
+  if (!attrs.PopulateFromOrigin(aOrigin, originNoSuffix)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  PermissionManager::MaybeStripOriginAttributes(aForceStripOA, attrs);
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_NewURI(getter_AddRefs(uri), originNoSuffix);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIPrincipal> principal =
+      BasePrincipal::CreateContentPrincipal(uri, attrs);
+  principal.forget(aPrincipal);
+  return NS_OK;
+}
+
+nsresult GetPrincipal(nsIURI* aURI, bool aIsInIsolatedMozBrowserElement,
+                      nsIPrincipal** aPrincipal) {
+  OriginAttributes attrs(aIsInIsolatedMozBrowserElement);
+  nsCOMPtr<nsIPrincipal> principal =
+      BasePrincipal::CreateContentPrincipal(aURI, attrs);
+  NS_ENSURE_TRUE(principal, NS_ERROR_FAILURE);
+
+  principal.forget(aPrincipal);
+  return NS_OK;
+}
+
+nsresult GetPrincipal(nsIURI* aURI, nsIPrincipal** aPrincipal) {
+  OriginAttributes attrs;
+  nsCOMPtr<nsIPrincipal> principal =
+      BasePrincipal::CreateContentPrincipal(aURI, attrs);
+  NS_ENSURE_TRUE(principal, NS_ERROR_FAILURE);
+
+  principal.forget(aPrincipal);
+  return NS_OK;
+}
+
+nsCString GetNextSubDomainForHost(const nsACString& aHost) {
+  nsCString subDomain;
+  nsresult rv =
+      nsEffectiveTLDService::GetInstance()->GetNextSubDomain(aHost, subDomain);
+  // We can fail if there is no more subdomain or if the host can't have a
+  // subdomain.
+  if (NS_FAILED(rv)) {
+    return ""_ns;
+  }
+
+  return subDomain;
+}
+
+// This function produces a nsIURI which is identical to the current
+// nsIURI, except that it has one less subdomain segment. It returns
+// `nullptr` if there are no more segments to remove.
+already_AddRefed<nsIURI> GetNextSubDomainURI(nsIURI* aURI) {
+  nsAutoCString host;
+  nsresult rv = aURI->GetHost(host);
+  if (NS_FAILED(rv)) {
+    return nullptr;
+  }
+
+  nsCString domain = GetNextSubDomainForHost(host);
+  if (domain.IsEmpty()) {
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIURI> uri;
+  rv = NS_MutateURI(aURI).SetHost(domain).Finalize(uri);
+  if (NS_FAILED(rv) || !uri) {
+    return nullptr;
+  }
+
+  return uri.forget();
+}
+
+nsresult UpgradeHostToOriginAndInsert(
+    const nsACString& aHost, const nsCString& aType, uint32_t aPermission,
+    uint32_t aExpireType, int64_t aExpireTime, int64_t aModificationTime,
+    bool aIsInIsolatedMozBrowserElement,
+    std::function<nsresult(const nsACString& aOrigin, const nsCString& aType,
+                           uint32_t aPermission, uint32_t aExpireType,
+                           int64_t aExpireTime, int64_t aModificationTime)>&&
+        aCallback) {
+  if (aHost.EqualsLiteral("<file>")) {
+    // We no longer support the magic host <file>
+    NS_WARNING(
+        "The magic host <file> is no longer supported. "
+        "It is being removed from the permissions database.");
+    return NS_OK;
+  }
+
+  // First, we check to see if the host is a valid URI. If it is, it can be
+  // imported directly
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_NewURI(getter_AddRefs(uri), aHost);
+  if (NS_SUCCEEDED(rv)) {
+    // It was previously possible to insert useless entries to your permissions
+    // database for URIs which have a null principal. This acts as a cleanup,
+    // getting rid of these useless database entries
+    if (uri->SchemeIs("moz-nullprincipal")) {
+      NS_WARNING("A moz-nullprincipal: permission is being discarded.");
+      return NS_OK;
+    }
+
+    nsCOMPtr<nsIPrincipal> principal;
+    rv = GetPrincipal(uri, aIsInIsolatedMozBrowserElement,
+                      getter_AddRefs(principal));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsAutoCString origin;
+    rv = GetOriginFromPrincipal(principal, IsOAForceStripPermission(aType),
+                                origin);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    aCallback(origin, aType, aPermission, aExpireType, aExpireTime,
+              aModificationTime);
+    return NS_OK;
+  }
+
+  // The user may use this host at non-standard ports or protocols, we can use
+  // their history to guess what ports and protocols we want to add permissions
+  // for. We find every URI which they have visited with this host (or a
+  // subdomain of this host), and try to add it as a principal.
+  bool foundHistory = false;
+
+  nsCOMPtr<nsINavHistoryService> histSrv =
+      do_GetService(NS_NAVHISTORYSERVICE_CONTRACTID);
+
+  if (histSrv) {
+    nsCOMPtr<nsINavHistoryQuery> histQuery;
+    rv = histSrv->GetNewQuery(getter_AddRefs(histQuery));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // Get the eTLD+1 of the domain
+    nsAutoCString eTLD1;
+    rv = nsEffectiveTLDService::GetInstance()->GetBaseDomainFromHost(aHost, 0,
+                                                                     eTLD1);
+
+    if (NS_FAILED(rv)) {
+      // If the lookup on the tldService for the base domain for the host
+      // failed, that means that we just want to directly use the host as the
+      // host name for the lookup.
+      eTLD1 = aHost;
+    }
+
+    // We want to only find history items for this particular eTLD+1, and
+    // subdomains
+    rv = histQuery->SetDomain(eTLD1);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = histQuery->SetDomainIsHost(false);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsINavHistoryQueryOptions> histQueryOpts;
+    rv = histSrv->GetNewQueryOptions(getter_AddRefs(histQueryOpts));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // We want to get the URIs for every item in the user's history with the
+    // given host
+    rv =
+        histQueryOpts->SetResultType(nsINavHistoryQueryOptions::RESULTS_AS_URI);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // We only search history, because searching both bookmarks and history
+    // is not supported, and history tends to be more comprehensive.
+    rv = histQueryOpts->SetQueryType(
+        nsINavHistoryQueryOptions::QUERY_TYPE_HISTORY);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // We include hidden URIs (such as those visited via iFrames) as they may
+    // have permissions too
+    rv = histQueryOpts->SetIncludeHidden(true);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsINavHistoryResult> histResult;
+    rv = histSrv->ExecuteQuery(histQuery, histQueryOpts,
+                               getter_AddRefs(histResult));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsINavHistoryContainerResultNode> histResultContainer;
+    rv = histResult->GetRoot(getter_AddRefs(histResultContainer));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = histResultContainer->SetContainerOpen(true);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    uint32_t childCount = 0;
+    rv = histResultContainer->GetChildCount(&childCount);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsTHashSet<nsCString> insertedOrigins;
+    for (uint32_t i = 0; i < childCount; i++) {
+      nsCOMPtr<nsINavHistoryResultNode> child;
+      histResultContainer->GetChild(i, getter_AddRefs(child));
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      uint32_t type;
+      rv = child->GetType(&type);
+      if (NS_WARN_IF(NS_FAILED(rv)) ||
+          type != nsINavHistoryResultNode::RESULT_TYPE_URI) {
+        NS_WARNING(
+            "Unexpected non-RESULT_TYPE_URI node in "
+            "UpgradeHostToOriginAndInsert()");
+        continue;
+      }
+
+      nsAutoCString uriSpec;
+      rv = child->GetUri(uriSpec);
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      nsCOMPtr<nsIURI> uri;
+      rv = NS_NewURI(getter_AddRefs(uri), uriSpec);
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      // Use the provided host - this URI may be for a subdomain, rather than
+      // the host we care about.
+      rv = NS_MutateURI(uri).SetHost(aHost).Finalize(uri);
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      // We now have a URI which we can make a nsIPrincipal out of
+      nsCOMPtr<nsIPrincipal> principal;
+      rv = GetPrincipal(uri, aIsInIsolatedMozBrowserElement,
+                        getter_AddRefs(principal));
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      nsAutoCString origin;
+      rv = GetOriginFromPrincipal(principal, IsOAForceStripPermission(aType),
+                                  origin);
+      if (NS_WARN_IF(NS_FAILED(rv))) continue;
+
+      // Ensure that we don't insert the same origin repeatedly
+      if (insertedOrigins.Contains(origin)) {
+        continue;
+      }
+
+      foundHistory = true;
+      rv = aCallback(origin, aType, aPermission, aExpireType, aExpireTime,
+                     aModificationTime);
+      NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Insert failed");
+      insertedOrigins.Insert(origin);
+    }
+
+    rv = histResultContainer->SetContainerOpen(false);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  // If we didn't find any origins for this host in the poermissions database,
+  // we can insert the default http:// and https:// permissions into the
+  // database. This has a relatively high likelihood of applying the permission
+  // to the correct origin.
+  if (!foundHistory) {
+    nsAutoCString hostSegment;
+    nsCOMPtr<nsIPrincipal> principal;
+    nsAutoCString origin;
+
+    // If this is an ipv6 URI, we need to surround it in '[', ']' before trying
+    // to parse it as a URI.
+    if (aHost.FindChar(':') != -1) {
+      hostSegment.AssignLiteral("[");
+      hostSegment.Append(aHost);
+      hostSegment.AppendLiteral("]");
+    } else {
+      hostSegment.Assign(aHost);
+    }
+
+    // http:// URI default
+    rv = NS_NewURI(getter_AddRefs(uri), "http://"_ns + hostSegment);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = GetPrincipal(uri, aIsInIsolatedMozBrowserElement,
+                      getter_AddRefs(principal));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = GetOriginFromPrincipal(principal, IsOAForceStripPermission(aType),
+                                origin);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    aCallback(origin, aType, aPermission, aExpireType, aExpireTime,
+              aModificationTime);
+
+    // https:// URI default
+    rv = NS_NewURI(getter_AddRefs(uri), "https://"_ns + hostSegment);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = GetPrincipal(uri, aIsInIsolatedMozBrowserElement,
+                      getter_AddRefs(principal));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = GetOriginFromPrincipal(principal, IsOAForceStripPermission(aType),
+                                origin);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    aCallback(origin, aType, aPermission, aExpireType, aExpireTime,
+              aModificationTime);
+  }
+
+  return NS_OK;
+}
+
+bool IsExpandedPrincipal(nsIPrincipal* aPrincipal) {
+  nsCOMPtr<nsIExpandedPrincipal> ep = do_QueryInterface(aPrincipal);
+  return !!ep;
+}
+
+// We only want to persist permissions which don't have session or policy
+// expiration.
+bool IsPersistentExpire(uint32_t aExpire, const nsACString& aType) {
+  bool res = (aExpire != nsIPermissionManager::EXPIRE_SESSION &&
+              aExpire != nsIPermissionManager::EXPIRE_POLICY);
+  return res;
+}
+
+}  // namespace
+
+////////////////////////////////////////////////////////////////////////////////
+
+PermissionManager::PermissionKey*
+PermissionManager::PermissionKey::CreateFromPrincipal(nsIPrincipal* aPrincipal,
+                                                      bool aForceStripOA,
+                                                      bool aScopeToSite,
+                                                      nsresult& aResult) {
+  nsAutoCString keyString;
+  if (aScopeToSite) {
+    aResult = GetSiteFromPrincipal(aPrincipal, aForceStripOA, keyString);
+  } else {
+    aResult = GetOriginFromPrincipal(aPrincipal, aForceStripOA, keyString);
+  }
+  if (NS_WARN_IF(NS_FAILED(aResult))) {
+    return nullptr;
+  }
+  return new PermissionKey(keyString);
+}
+
+PermissionManager::PermissionKey*
+PermissionManager::PermissionKey::CreateFromURIAndOriginAttributes(
+    nsIURI* aURI, const OriginAttributes* aOriginAttributes, bool aForceStripOA,
+    nsresult& aResult) {
+  nsAutoCString origin;
+  aResult =
+      GetOriginFromURIAndOA(aURI, aOriginAttributes, aForceStripOA, origin);
+  if (NS_WARN_IF(NS_FAILED(aResult))) {
+    return nullptr;
+  }
+
+  return new PermissionKey(origin);
+}
+
+PermissionManager::PermissionKey*
+PermissionManager::PermissionKey::CreateFromURI(nsIURI* aURI,
+                                                nsresult& aResult) {
+  nsAutoCString origin;
+  aResult = ContentPrincipal::GenerateOriginNoSuffixFromURI(aURI, origin);
+  if (NS_WARN_IF(NS_FAILED(aResult))) {
+    return nullptr;
+  }
+
+  return new PermissionKey(origin);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// PermissionManager Implementation
+
+NS_IMPL_ISUPPORTS(PermissionManager, nsIPermissionManager, nsIObserver,
+                  nsISupportsWeakReference, nsIAsyncShutdownBlocker)
+
+PermissionManager::PermissionManager()
+    : mMonitor("PermissionManager::mMonitor"),
+      mState(eInitializing),
+      mMemoryOnlyDB(false),
+      mLargestID(0) {}
+
+PermissionManager::~PermissionManager() {
+  // NOTE: Make sure to reject each of the promises in mPermissionKeyPromiseMap
+  // before destroying.
+  for (const auto& promise : mPermissionKeyPromiseMap.Values()) {
+    if (promise) {
+      promise->Reject(NS_ERROR_FAILURE, __func__);
+    }
+  }
+  mPermissionKeyPromiseMap.Clear();
+
+  if (mThread) {
+    mThread->Shutdown();
+    mThread = nullptr;
+  }
+}
+
+/* static */
+StaticMutex PermissionManager::sCreationMutex;
+
+// static
+already_AddRefed<nsIPermissionManager> PermissionManager::GetXPCOMSingleton() {
+  // The lazy initialization could race.
+  StaticMutexAutoLock lock(sCreationMutex);
+
+  if (gPermissionManager) {
+    return do_AddRef(gPermissionManager);
+  }
+
+  // Create a new singleton PermissionManager.
+  // We AddRef only once since XPCOM has rules about the ordering of module
+  // teardowns - by the time our module destructor is called, it's too late to
+  // Release our members, since GC cycles have already been completed and
+  // would result in serious leaks.
+  // See bug 209571.
+  auto permManager = MakeRefPtr<PermissionManager>();
+  if (NS_SUCCEEDED(permManager->Init())) {
+    gPermissionManager = permManager.get();
+    return permManager.forget();
+  }
+
+  return nullptr;
+}
+
+// static
+PermissionManager* PermissionManager::GetInstance() {
+  // TODO: There is a minimal chance that we can race here with a
+  // GetXPCOMSingleton call that did not yet set gPermissionManager.
+  // See bug 1745056.
+  if (!gPermissionManager) {
+    // Hand off the creation of the permission manager to GetXPCOMSingleton.
+    nsCOMPtr<nsIPermissionManager> permManager = GetXPCOMSingleton();
+  }
+
+  return gPermissionManager;
+}
+
+nsresult PermissionManager::Init() {
+  // If we are already shutting down, do not permit a creation.
+  // This must match the phase in GetAsyncShutdownBarrier.
+  if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
+    return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
+  }
+
+  // If the 'permissions.memory_only' pref is set to true, then don't write any
+  // permission settings to disk, but keep them in a memory-only database.
+  mMemoryOnlyDB = Preferences::GetBool("permissions.memory_only", false);
+
+  nsresult rv;
+  nsCOMPtr<nsIPrefService> prefService =
+      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = prefService->GetBranch("permissions.default.",
+                              getter_AddRefs(mDefaultPrefBranch));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (IsChildProcess()) {
+    // Stop here; we don't need the DB in the child process. Instead we will be
+    // sent permissions as we need them by our parent process.
+    mState = eReady;
+
+    // We use ClearOnShutdown on the content process only because on the parent
+    // process we need to block the shutdown for the final closeDB() call.
+    ClearOnShutdown(&gPermissionManager);
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
+  if (observerService) {
+    observerService->AddObserver(this, "profile-do-change", true);
+    observerService->AddObserver(this, "testonly-reload-permissions-from-disk",
+                                 true);
+  }
+
+  if (XRE_IsParentProcess()) {
+    nsCOMPtr<nsIAsyncShutdownClient> asc = GetAsyncShutdownBarrier();
+    if (!asc) {
+      return NS_ERROR_NOT_AVAILABLE;
+    }
+    nsAutoString blockerName;
+    MOZ_ALWAYS_SUCCEEDS(GetName(blockerName));
+
+    nsresult rv = asc->AddBlocker(
+        this, NS_LITERAL_STRING_FROM_CSTRING(__FILE__), __LINE__, blockerName);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  AddIdleDailyMaintenanceJob();
+
+  MOZ_ASSERT(!mThread);
+  NS_ENSURE_SUCCESS(NS_NewNamedThread("Permission", getter_AddRefs(mThread)),
+                    NS_ERROR_FAILURE);
+
+  PRThread* prThread;
+  MOZ_ALWAYS_SUCCEEDS(mThread->GetPRThread(&prThread));
+  MOZ_ASSERT(prThread);
+
+  mThreadBoundData.Transfer(prThread);
+
+  InitDB(false);
+
+  return NS_OK;
+}
+
+nsresult PermissionManager::OpenDatabase(nsIFile* aPermissionsFile) {
+  MOZ_ASSERT(!NS_IsMainThread());
+  auto data = mThreadBoundData.Access();
+
+  nsresult rv;
+  nsCOMPtr<mozIStorageService> storage =
+      do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
+  if (!storage) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  // cache a connection to the hosts database
+  if (mMemoryOnlyDB) {
+    rv = storage->OpenSpecialDatabase(
+        kMozStorageMemoryStorageKey, VoidCString(),
+        mozIStorageService::CONNECTION_DEFAULT, getter_AddRefs(data->mDBConn));
+  } else {
+    rv = storage->OpenDatabase(aPermissionsFile,
+                               mozIStorageService::CONNECTION_DEFAULT,
+                               getter_AddRefs(data->mDBConn));
+  }
+  return rv;
+}
+
+void PermissionManager::InitDB(bool aRemoveFile) {
+  mState = eInitializing;
+
+  {
+    MonitorAutoLock lock(mMonitor);
+    mReadEntries.Clear();
+  }
+
+  auto readyIfFailed = MakeScopeExit([&]() {
+    // ignore failure here, since it's non-fatal (we can run fine without
+    // persistent storage - e.g. if there's no profile).
+    // XXX should we tell the user about this?
+    mState = eReady;
+  });
+
+  if (!mPermissionsFile) {
+    nsresult rv = NS_GetSpecialDirectory(NS_APP_PERMISSION_PARENT_DIR,
+                                         getter_AddRefs(mPermissionsFile));
+    if (NS_FAILED(rv)) {
+      rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
+                                  getter_AddRefs(mPermissionsFile));
+      if (NS_FAILED(rv)) {
+        return;
+      }
+    }
+
+    rv =
+        mPermissionsFile->AppendNative(nsLiteralCString(PERMISSIONS_FILE_NAME));
+    NS_ENSURE_SUCCESS_VOID(rv);
+  }
+
+  nsCOMPtr<nsIInputStream> defaultsInputStream = GetDefaultsInputStream();
+
+  RefPtr<PermissionManager> self = this;
+  mThread->Dispatch(NS_NewRunnableFunction(
+      "PermissionManager::InitDB", [self, aRemoveFile, defaultsInputStream] {
+        nsresult rv = self->TryInitDB(aRemoveFile, defaultsInputStream);
+        Unused << NS_WARN_IF(NS_FAILED(rv));
+
+        // This extra runnable calls EnsureReadCompleted to finialize the
+        // initialization. If there is something blocked by the monitor, it will
+        // be NOP.
+        NS_DispatchToMainThread(
+            NS_NewRunnableFunction("PermissionManager::InitDB-MainThread",
+                                   [self] { self->EnsureReadCompleted(); }));
+
+        self->mMonitor.Notify();
+      }));
+
+  readyIfFailed.release();
+}
+
+nsresult PermissionManager::TryInitDB(bool aRemoveFile,
+                                      nsIInputStream* aDefaultsInputStream) {
+  MOZ_ASSERT(!NS_IsMainThread());
+
+  MonitorAutoLock lock(mMonitor);
+
+  auto raii = MakeScopeExit([&]() {
+    if (aDefaultsInputStream) {
+      aDefaultsInputStream->Close();
+    }
+
+    mState = eDBInitialized;
+  });
+
+  auto data = mThreadBoundData.Access();
+
+  auto raiiFailure = MakeScopeExit([&]() {
+    if (data->mDBConn) {
+      DebugOnly<nsresult> rv = data->mDBConn->Close();
+      MOZ_ASSERT(NS_SUCCEEDED(rv));
+      data->mDBConn = nullptr;
+    }
+  });
+
+  nsresult rv;
+
+  if (aRemoveFile) {
+    bool exists = false;
+    rv = mPermissionsFile->Exists(&exists);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (exists) {
+      rv = mPermissionsFile->Remove(false);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+  }
+
+  rv = OpenDatabase(mPermissionsFile);
+  if (rv == NS_ERROR_FILE_CORRUPTED) {
+    LogToConsole(u"permissions.sqlite is corrupted! Try again!"_ns);
+
+    // Add telemetry probe
+    Telemetry::Accumulate(Telemetry::PERMISSIONS_SQL_CORRUPTED, 1);
+
+    // delete corrupted permissions.sqlite and try again
+    rv = mPermissionsFile->Remove(false);
+    NS_ENSURE_SUCCESS(rv, rv);
+    LogToConsole(u"Corrupted permissions.sqlite has been removed."_ns);
+
+    rv = OpenDatabase(mPermissionsFile);
+    NS_ENSURE_SUCCESS(rv, rv);
+    LogToConsole(u"OpenDatabase to permissions.sqlite is successful!"_ns);
+  }
+
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  bool ready;
+  data->mDBConn->GetConnectionReady(&ready);
+  if (!ready) {
+    LogToConsole(nsLiteralString(
+        u"Fail to get connection to permissions.sqlite! Try again!"));
+
+    // delete and try again
+    rv = mPermissionsFile->Remove(false);
+    NS_ENSURE_SUCCESS(rv, rv);
+    LogToConsole(u"Defective permissions.sqlite has been removed."_ns);
+
+    // Add telemetry probe
+    Telemetry::Accumulate(Telemetry::DEFECTIVE_PERMISSIONS_SQL_REMOVED, 1);
+
+    rv = OpenDatabase(mPermissionsFile);
+    NS_ENSURE_SUCCESS(rv, rv);
+    LogToConsole(u"OpenDatabase to permissions.sqlite is successful!"_ns);
+
+    data->mDBConn->GetConnectionReady(&ready);
+    if (!ready) return NS_ERROR_UNEXPECTED;
+  }
+
+  bool tableExists = false;
+  data->mDBConn->TableExists("moz_perms"_ns, &tableExists);
+  if (!tableExists) {
+    data->mDBConn->TableExists("moz_hosts"_ns, &tableExists);
+  }
+  if (!tableExists) {
+    rv = CreateTable();
+    NS_ENSURE_SUCCESS(rv, rv);
+  } else {
+    // table already exists; check the schema version before reading
+    int32_t dbSchemaVersion;
+    rv = data->mDBConn->GetSchemaVersion(&dbSchemaVersion);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    switch (dbSchemaVersion) {
+        // upgrading.
+        // every time you increment the database schema, you need to
+        // implement the upgrading code from the previous version to the
+        // new one. fall through to current version
+
+      case 1: {
+        // previous non-expiry version of database.  Upgrade it by adding
+        // the expiration columns
+        rv = data->mDBConn->ExecuteSimpleSQL(
+            "ALTER TABLE moz_hosts ADD expireType INTEGER"_ns);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = data->mDBConn->ExecuteSimpleSQL(
+            "ALTER TABLE moz_hosts ADD expireTime INTEGER"_ns);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // TODO: we want to make default version as version 2 in order to
+      // fix bug 784875.
+      case 0:
+      case 2: {
+        // Add appId/isInBrowserElement fields.
+        rv = data->mDBConn->ExecuteSimpleSQL(
+            "ALTER TABLE moz_hosts ADD appId INTEGER"_ns);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+            "ALTER TABLE moz_hosts ADD isInBrowserElement INTEGER"));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = data->mDBConn->SetSchemaVersion(3);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // Version 3->4 is the creation of the modificationTime field.
+      case 3: {
+        rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+            "ALTER TABLE moz_hosts ADD modificationTime INTEGER"));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        // We leave the modificationTime at zero for all existing records;
+        // using now() would mean, eg, that doing "remove all from the
+        // last hour" within the first hour after migration would remove
+        // all permissions.
+
+        rv = data->mDBConn->SetSchemaVersion(4);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // In version 5, host appId, and isInBrowserElement were merged into
+      // a single origin entry
+      //
+      // In version 6, the tables were renamed for backwards compatability
+      // reasons with version 4 and earlier.
+      //
+      // In version 7, a bug in the migration used for version 4->5 was
+      // discovered which could have triggered data-loss. Because of that,
+      // all users with a version 4, 5, or 6 database will be re-migrated
+      // from the backup database. (bug 1186034). This migration bug is
+      // not present after bug 1185340, and the re-migration ensures that
+      // all users have the fix.
+      case 5:
+        // This branch could also be reached via dbSchemaVersion == 3, in
+        // which case we want to fall through to the dbSchemaVersion == 4
+        // case. The easiest way to do that is to perform this extra check
+        // here to make sure that we didn't get here via a fallthrough
+        // from v3
+        if (dbSchemaVersion == 5) {
+          // In version 5, the backup database is named moz_hosts_v4. We
+          // perform the version 5->6 migration to get the tables to have
+          // consistent naming conventions.
+
+          // Version 5->6 is the renaming of moz_hosts to moz_perms, and
+          // moz_hosts_v4 to moz_hosts (bug 1185343)
+          //
+          // In version 5, we performed the modifications to the
+          // permissions database in place, this meant that if you
+          // upgraded to a version which used V5, and then downgraded to a
+          // version which used v4 or earlier, the fallback path would
+          // drop the table, and your permissions data would be lost. This
+          // migration undoes that mistake, by restoring the old moz_hosts
+          // table (if it was present), and instead using the new table
+          // moz_perms for the new permissions schema.
+          //
+          // NOTE: If you downgrade, store new permissions, and then
+          // upgrade again, these new permissions won't be migrated or
+          // reflected in the updated database. This migration only occurs
+          // once, as if moz_perms exists, it will skip creating it. In
+          // addition, permissions added after the migration will not be
+          // visible in previous versions of firefox.
+
+          bool permsTableExists = false;
+          data->mDBConn->TableExists("moz_perms"_ns, &permsTableExists);
+          if (!permsTableExists) {
+            // Move the upgraded database to moz_perms
+            rv = data->mDBConn->ExecuteSimpleSQL(
+                "ALTER TABLE moz_hosts RENAME TO moz_perms"_ns);
+            NS_ENSURE_SUCCESS(rv, rv);
+          } else {
+            NS_WARNING(
+                "moz_hosts was not renamed to moz_perms, "
+                "as a moz_perms table already exists");
+
+            // In the situation where a moz_perms table already exists,
+            // but the schema is lower than 6, a migration has already
+            // previously occured to V6, but a downgrade has caused the
+            // moz_hosts table to be dropped. This should only occur in
+            // the case of a downgrade to a V5 database, which was only
+            // present in a few day's nightlies. As that version was
+            // likely used only on a temporary basis, we assume that the
+            // database from the previous V6 has the permissions which the
+            // user actually wants to use. We have to get rid of moz_hosts
+            // such that moz_hosts_v4 can be moved into its place if it
+            // exists.
+            rv = data->mDBConn->ExecuteSimpleSQL("DROP TABLE moz_hosts"_ns);
+            NS_ENSURE_SUCCESS(rv, rv);
+          }
+
+#ifdef DEBUG
+          // The moz_hosts table shouldn't exist anymore
+          bool hostsTableExists = false;
+          data->mDBConn->TableExists("moz_hosts"_ns, &hostsTableExists);
+          MOZ_ASSERT(!hostsTableExists);
+#endif
+
+          // Rename moz_hosts_v4 back to it's original location, if it
+          // exists
+          bool v4TableExists = false;
+          data->mDBConn->TableExists("moz_hosts_v4"_ns, &v4TableExists);
+          if (v4TableExists) {
+            rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+                "ALTER TABLE moz_hosts_v4 RENAME TO moz_hosts"));
+            NS_ENSURE_SUCCESS(rv, rv);
+          }
+
+          rv = data->mDBConn->SetSchemaVersion(6);
+          NS_ENSURE_SUCCESS(rv, rv);
+        }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // At this point, the version 5 table has been migrated to a version
+      // 6 table We are guaranteed to have at least one of moz_hosts and
+      // moz_perms. If we have moz_hosts, we will migrate moz_hosts into
+      // moz_perms (even if we already have a moz_perms, as we need a
+      // re-migration due to bug 1186034).
+      //
+      // After this migration, we are guaranteed to have both a moz_hosts
+      // (for backwards compatability), and a moz_perms table. The
+      // moz_hosts table will have a v4 schema, and the moz_perms table
+      // will have a v6 schema.
+      case 4:
+      case 6: {
+        bool hostsTableExists = false;
+        data->mDBConn->TableExists("moz_hosts"_ns, &hostsTableExists);
+        if (hostsTableExists) {
+          // Both versions 4 and 6 have a version 4 formatted hosts table
+          // named moz_hosts. We can migrate this table to our version 7
+          // table moz_perms. If moz_perms is present, then we can use it
+          // as a basis for comparison.
+
+          rv = data->mDBConn->BeginTransaction();
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          bool tableExists = false;
+          data->mDBConn->TableExists("moz_hosts_new"_ns, &tableExists);
+          if (tableExists) {
+            NS_WARNING(
+                "The temporary database moz_hosts_new already exists, "
+                "dropping "
+                "it.");
+            rv = data->mDBConn->ExecuteSimpleSQL("DROP TABLE moz_hosts_new"_ns);
+            NS_ENSURE_SUCCESS(rv, rv);
+          }
+          rv = data->mDBConn->ExecuteSimpleSQL(
+              nsLiteralCString("CREATE TABLE moz_hosts_new ("
+                               " id INTEGER PRIMARY KEY"
+                               ",origin TEXT"
+                               ",type TEXT"
+                               ",permission INTEGER"
+                               ",expireType INTEGER"
+                               ",expireTime INTEGER"
+                               ",modificationTime INTEGER"
+                               ")"));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          nsCOMPtr<mozIStorageStatement> stmt;
+          rv = data->mDBConn->CreateStatement(
+              nsLiteralCString(
+                  "SELECT host, type, permission, expireType, "
+                  "expireTime, "
+                  "modificationTime, isInBrowserElement FROM moz_hosts"),
+              getter_AddRefs(stmt));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          int64_t id = 0;
+          bool hasResult;
+
+          while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
+            MigrationEntry entry;
+
+            // Read in the old row
+            rv = stmt->GetUTF8String(0, entry.mHost);
+            if (NS_WARN_IF(NS_FAILED(rv))) {
+              continue;
+            }
+            rv = stmt->GetUTF8String(1, entry.mType);
+            if (NS_WARN_IF(NS_FAILED(rv))) {
+              continue;
+            }
+
+            entry.mId = id++;
+            entry.mPermission = stmt->AsInt32(2);
+            entry.mExpireType = stmt->AsInt32(3);
+            entry.mExpireTime = stmt->AsInt64(4);
+            entry.mModificationTime = stmt->AsInt64(5);
+            entry.mIsInBrowserElement = static_cast<bool>(stmt->AsInt32(6));
+
+            mMigrationEntries.AppendElement(entry);
+          }
+
+          // We don't drop the moz_hosts table such that it is available
+          // for backwards-compatability and for future migrations in case
+          // of migration errors in the current code. Create a marker
+          // empty table which will indicate that the moz_hosts table is
+          // intended to act as a backup. If this table is not present,
+          // then the moz_hosts table was created as a random empty table.
+          rv = data->mDBConn->ExecuteSimpleSQL(
+              nsLiteralCString("CREATE TABLE moz_hosts_is_backup (dummy "
+                               "INTEGER PRIMARY KEY)"));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          bool permsTableExists = false;
+          data->mDBConn->TableExists("moz_perms"_ns, &permsTableExists);
+          if (permsTableExists) {
+            // The user already had a moz_perms table, and we are
+            // performing a re-migration. We count the rows in the old
+            // table for telemetry, and then back up their old database as
+            // moz_perms_v6
+
+            nsCOMPtr<mozIStorageStatement> countStmt;
+            rv = data->mDBConn->CreateStatement(
+                "SELECT COUNT(*) FROM moz_perms"_ns, getter_AddRefs(countStmt));
+            bool hasResult = false;
+            if (NS_FAILED(rv) ||
+                NS_FAILED(countStmt->ExecuteStep(&hasResult)) || !hasResult) {
+              NS_WARNING("Could not count the rows in moz_perms");
+            }
+
+            // Back up the old moz_perms database as moz_perms_v6 before
+            // we move the new table into its position
+            rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+                "ALTER TABLE moz_perms RENAME TO moz_perms_v6"));
+            NS_ENSURE_SUCCESS(rv, rv);
+          }
+
+          rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+              "ALTER TABLE moz_hosts_new RENAME TO moz_perms"));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          rv = data->mDBConn->CommitTransaction();
+          NS_ENSURE_SUCCESS(rv, rv);
+        } else {
+          // We don't have a moz_hosts table, so we create one for
+          // downgrading purposes. This table is empty.
+          rv = data->mDBConn->ExecuteSimpleSQL(
+              nsLiteralCString("CREATE TABLE moz_hosts ("
+                               " id INTEGER PRIMARY KEY"
+                               ",host TEXT"
+                               ",type TEXT"
+                               ",permission INTEGER"
+                               ",expireType INTEGER"
+                               ",expireTime INTEGER"
+                               ",modificationTime INTEGER"
+                               ",appId INTEGER"
+                               ",isInBrowserElement INTEGER"
+                               ")"));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          // We are guaranteed to have a moz_perms table at this point.
+        }
+
+#ifdef DEBUG
+        {
+          // At this point, both the moz_hosts and moz_perms tables should
+          // exist
+          bool hostsTableExists = false;
+          bool permsTableExists = false;
+          data->mDBConn->TableExists("moz_hosts"_ns, &hostsTableExists);
+          data->mDBConn->TableExists("moz_perms"_ns, &permsTableExists);
+          MOZ_ASSERT(hostsTableExists && permsTableExists);
+        }
+#endif
+
+        rv = data->mDBConn->SetSchemaVersion(7);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // The version 7-8 migration is the re-migration of localhost and
+      // ip-address entries due to errors in the previous version 7
+      // migration which caused localhost and ip-address entries to be
+      // incorrectly discarded. The version 7 migration logic has been
+      // corrected, and thus this logic only needs to execute if the user
+      // is currently on version 7.
+      case 7: {
+        // This migration will be relatively expensive as we need to
+        // perform database lookups for each origin which we want to
+        // insert. Fortunately, it shouldn't be too expensive as we only
+        // want to insert a small number of entries created for localhost
+        // or IP addresses.
+
+        // We only want to perform the re-migration if moz_hosts is a
+        // backup
+        bool hostsIsBackupExists = false;
+        data->mDBConn->TableExists("moz_hosts_is_backup"_ns,
+                                   &hostsIsBackupExists);
+
+        // Only perform this migration if the original schema version was
+        // 7, and the moz_hosts table is a backup.
+        if (dbSchemaVersion == 7 && hostsIsBackupExists) {
+          nsCOMPtr<mozIStorageStatement> stmt;
+          rv = data->mDBConn->CreateStatement(
+              nsLiteralCString(
+                  "SELECT host, type, permission, expireType, "
+                  "expireTime, "
+                  "modificationTime, isInBrowserElement FROM moz_hosts"),
+              getter_AddRefs(stmt));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          nsCOMPtr<mozIStorageStatement> idStmt;
+          rv = data->mDBConn->CreateStatement(
+              "SELECT MAX(id) FROM moz_hosts"_ns, getter_AddRefs(idStmt));
+
+          int64_t id = 0;
+          bool hasResult = false;
+          if (NS_SUCCEEDED(rv) &&
+              NS_SUCCEEDED(idStmt->ExecuteStep(&hasResult)) && hasResult) {
+            id = idStmt->AsInt32(0) + 1;
+          }
+
+          while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
+            MigrationEntry entry;
+
+            // Read in the old row
+            rv = stmt->GetUTF8String(0, entry.mHost);
+            if (NS_WARN_IF(NS_FAILED(rv))) {
+              continue;
+            }
+
+            nsAutoCString eTLD1;
+            rv = nsEffectiveTLDService::GetInstance()->GetBaseDomainFromHost(
+                entry.mHost, 0, eTLD1);
+            if (NS_SUCCEEDED(rv)) {
+              // We only care about entries which the tldService can't
+              // handle
+              continue;
+            }
+
+            rv = stmt->GetUTF8String(1, entry.mType);
+            if (NS_WARN_IF(NS_FAILED(rv))) {
+              continue;
+            }
+
+            entry.mId = id++;
+            entry.mPermission = stmt->AsInt32(2);
+            entry.mExpireType = stmt->AsInt32(3);
+            entry.mExpireTime = stmt->AsInt64(4);
+            entry.mModificationTime = stmt->AsInt64(5);
+            entry.mIsInBrowserElement = static_cast<bool>(stmt->AsInt32(6));
+
+            mMigrationEntries.AppendElement(entry);
+          }
+        }
+
+        // Even if we didn't perform the migration, we want to bump the
+        // schema version to 8.
+        rv = data->mDBConn->SetSchemaVersion(8);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // The version 8-9 migration removes the unnecessary backup
+      // moz-hosts database contents. as the data no longer needs to be
+      // migrated
+      case 8: {
+        // We only want to clear out the old table if it is a backup. If
+        // it isn't a backup, we don't need to touch it.
+        bool hostsIsBackupExists = false;
+        data->mDBConn->TableExists("moz_hosts_is_backup"_ns,
+                                   &hostsIsBackupExists);
+        if (hostsIsBackupExists) {
+          // Delete everything from the backup, we want to keep around the
+          // table so that you can still downgrade and not break things,
+          // but we don't need to keep the rows around.
+          rv = data->mDBConn->ExecuteSimpleSQL("DELETE FROM moz_hosts"_ns);
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          // The table is no longer a backup, so get rid of it.
+          rv = data->mDBConn->ExecuteSimpleSQL(
+              "DROP TABLE moz_hosts_is_backup"_ns);
+          NS_ENSURE_SUCCESS(rv, rv);
+        }
+
+        rv = data->mDBConn->SetSchemaVersion(9);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      case 9: {
+        rv = data->mDBConn->SetSchemaVersion(10);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      case 10: {
+        // Filter out the rows with storage access API permissions with a
+        // granted origin, and remove the granted origin part from the
+        // permission type.
+        rv = data->mDBConn->ExecuteSimpleSQL(nsLiteralCString(
+            "UPDATE moz_perms "
+            "SET type=SUBSTR(type, 0, INSTR(SUBSTR(type, INSTR(type, "
+            "'^') + "
+            "1), '^') + INSTR(type, '^')) "
+            "WHERE INSTR(SUBSTR(type, INSTR(type, '^') + 1), '^') AND "
+            "SUBSTR(type, 0, 18) == \"storageAccessAPI^\";"));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = data->mDBConn->SetSchemaVersion(11);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      case 11: {
+        // Migrate 3rdPartyStorage keys to a site scope
+        rv = data->mDBConn->BeginTransaction();
+        NS_ENSURE_SUCCESS(rv, rv);
+        nsCOMPtr<mozIStorageStatement> updateStmt;
+        rv = data->mDBConn->CreateStatement(
+            nsLiteralCString("UPDATE moz_perms SET origin = ?2 WHERE id = ?1"),
+            getter_AddRefs(updateStmt));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        nsCOMPtr<mozIStorageStatement> deleteStmt;
+        rv = data->mDBConn->CreateStatement(
+            nsLiteralCString("DELETE FROM moz_perms WHERE id = ?1"),
+            getter_AddRefs(deleteStmt));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        nsCOMPtr<mozIStorageStatement> selectStmt;
+        rv = data->mDBConn->CreateStatement(
+            nsLiteralCString("SELECT id, origin, type FROM moz_perms WHERE "
+                             " SUBSTR(type, 0, 17) == \"3rdPartyStorage^\""),
+            getter_AddRefs(selectStmt));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        nsTHashSet<nsCStringHashKey> deduplicationSet;
+        bool hasResult;
+        while (NS_SUCCEEDED(selectStmt->ExecuteStep(&hasResult)) && hasResult) {
+          int64_t id;
+          rv = selectStmt->GetInt64(0, &id);
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          nsCString origin;
+          rv = selectStmt->GetUTF8String(1, origin);
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          nsCString type;
+          rv = selectStmt->GetUTF8String(2, type);
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          nsCOMPtr<nsIURI> uri;
+          rv = NS_NewURI(getter_AddRefs(uri), origin);
+          if (NS_FAILED(rv)) {
+            continue;
+          }
+          nsCString site;
+          rv = nsEffectiveTLDService::GetInstance()->GetSite(uri, site);
+          if (NS_WARN_IF(NS_FAILED(rv))) {
+            continue;
+          }
+
+          nsCString deduplicationKey =
+              nsPrintfCString("%s,%s", site.get(), type.get());
+          if (deduplicationSet.Contains(deduplicationKey)) {
+            rv = deleteStmt->BindInt64ByIndex(0, id);
+            NS_ENSURE_SUCCESS(rv, rv);
+
+            rv = deleteStmt->Execute();
+            NS_ENSURE_SUCCESS(rv, rv);
+          } else {
+            deduplicationSet.Insert(deduplicationKey);
+            rv = updateStmt->BindInt64ByIndex(0, id);
+            NS_ENSURE_SUCCESS(rv, rv);
+            rv = updateStmt->BindUTF8StringByIndex(1, site);
+            NS_ENSURE_SUCCESS(rv, rv);
+
+            rv = updateStmt->Execute();
+            NS_ENSURE_SUCCESS(rv, rv);
+          }
+        }
+        rv = data->mDBConn->CommitTransaction();
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = data->mDBConn->SetSchemaVersion(HOSTS_SCHEMA_VERSION);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+
+        // fall through to the next upgrade
+        [[fallthrough]];
+
+      // current version.
+      case HOSTS_SCHEMA_VERSION:
+        break;
+
+      // downgrading.
+      // if columns have been added to the table, we can still use the
+      // ones we understand safely. if columns have been deleted or
+      // altered, just blow away the table and start from scratch! if you
+      // change the way a column is interpreted, make sure you also change
+      // its name so this check will catch it.
+      default: {
+        // check if all the expected columns exist
+        nsCOMPtr<mozIStorageStatement> stmt;
+        rv = data->mDBConn->CreateStatement(
+            nsLiteralCString("SELECT origin, type, permission, "
+                             "expireType, expireTime, "
+                             "modificationTime FROM moz_perms"),
+            getter_AddRefs(stmt));
+        if (NS_SUCCEEDED(rv)) break;
+
+        // our columns aren't there - drop the table!
+        rv = data->mDBConn->ExecuteSimpleSQL("DROP TABLE moz_perms"_ns);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        rv = CreateTable();
+        NS_ENSURE_SUCCESS(rv, rv);
+      } break;
+    }
+  }
+
+  // cache frequently used statements (for insertion, deletion, and
+  // updating)
+  rv = data->mDBConn->CreateStatement(
+      nsLiteralCString("INSERT INTO moz_perms "
+                       "(id, origin, type, permission, expireType, "
+                       "expireTime, modificationTime) "
+                       "VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)"),
+      getter_AddRefs(data->mStmtInsert));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = data->mDBConn->CreateStatement(nsLiteralCString("DELETE FROM moz_perms "
+                                                       "WHERE id = ?1"),
+                                      getter_AddRefs(data->mStmtDelete));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = data->mDBConn->CreateStatement(
+      nsLiteralCString("UPDATE moz_perms "
+                       "SET permission = ?2, expireType= ?3, expireTime = "
+                       "?4, modificationTime = ?5 WHERE id = ?1"),
+      getter_AddRefs(data->mStmtUpdate));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Always import default permissions.
+  ConsumeDefaultsInputStream(aDefaultsInputStream, lock);
+
+  // check whether to import or just read in the db
+  if (tableExists) {
+    rv = Read(lock);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  raiiFailure.release();
+
+  return NS_OK;
+}
+
+void PermissionManager::AddIdleDailyMaintenanceJob() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
+  NS_ENSURE_TRUE_VOID(observerService);
+
+  nsresult rv =
+      observerService->AddObserver(this, OBSERVER_TOPIC_IDLE_DAILY, false);
+  NS_ENSURE_SUCCESS_VOID(rv);
+}
+
+void PermissionManager::RemoveIdleDailyMaintenanceJob() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
+  NS_ENSURE_TRUE_VOID(observerService);
+
+  nsresult rv =
+      observerService->RemoveObserver(this, OBSERVER_TOPIC_IDLE_DAILY);
+  NS_ENSURE_SUCCESS_VOID(rv);
+}
+
+void PermissionManager::PerformIdleDailyMaintenance() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  RefPtr<PermissionManager> self = this;
+  mThread->Dispatch(NS_NewRunnableFunction(
+      "PermissionManager::PerformIdleDailyMaintenance", [self] {
+        auto data = self->mThreadBoundData.Access();
+
+        if (self->mState == eClosed || !data->mDBConn) {
+          return;
+        }
+
+        nsCOMPtr<mozIStorageStatement> stmtDeleteExpired;
+        nsresult rv = data->mDBConn->CreateStatement(
+            nsLiteralCString("DELETE FROM moz_perms WHERE expireType = "
+                             "?1 AND expireTime <= ?2"),
+            getter_AddRefs(stmtDeleteExpired));
+        NS_ENSURE_SUCCESS_VOID(rv);
+
+        rv = stmtDeleteExpired->BindInt32ByIndex(
+            0, nsIPermissionManager::EXPIRE_TIME);
+        NS_ENSURE_SUCCESS_VOID(rv);
+
+        rv = stmtDeleteExpired->BindInt64ByIndex(1, EXPIRY_NOW);
+        NS_ENSURE_SUCCESS_VOID(rv);
+
+        rv = stmtDeleteExpired->Execute();
+        NS_ENSURE_SUCCESS_VOID(rv);
+      }));
+}
+
+// sets the schema version and creates the moz_perms table.
+nsresult PermissionManager::CreateTable() {
+  MOZ_ASSERT(!NS_IsMainThread());
+  auto data = mThreadBoundData.Access();
+
+  // set the schema version, before creating the table
+  nsresult rv = data->mDBConn->SetSchemaVersion(HOSTS_SCHEMA_VERSION);
+  if (NS_FAILED(rv)) return rv;
+
+  // create the table
+  // SQL also lives in automation.py.in. If you change this SQL change that
+  // one too
+  rv = data->mDBConn->ExecuteSimpleSQL(
+      nsLiteralCString("CREATE TABLE moz_perms ("
+                       " id INTEGER PRIMARY KEY"
+                       ",origin TEXT"
+                       ",type TEXT"
+                       ",permission INTEGER"
+                       ",expireType INTEGER"
+                       ",expireTime INTEGER"
+                       ",modificationTime INTEGER"
+                       ")"));
+  if (NS_FAILED(rv)) return rv;
+
+  // We also create a legacy V4 table, for backwards compatability,
+  // and to ensure that downgrades don't trigger a schema version change.
+  return data->mDBConn->ExecuteSimpleSQL(
+      nsLiteralCString("CREATE TABLE moz_hosts ("
+                       " id INTEGER PRIMARY KEY"
+                       ",host TEXT"
+                       ",type TEXT"
+                       ",permission INTEGER"
+                       ",expireType INTEGER"
+                       ",expireTime INTEGER"
+                       ",modificationTime INTEGER"
+                       ",isInBrowserElement INTEGER"
+                       ")"));
+}
+
+// Returns whether the given combination of expire type and expire time are
+// expired. Note that EXPIRE_SESSION only honors expireTime if it is nonzero.
+bool PermissionManager::HasExpired(uint32_t aExpireType, int64_t aExpireTime) {
+  return (aExpireType == nsIPermissionManager::EXPIRE_TIME ||
+          (aExpireType == nsIPermissionManager::EXPIRE_SESSION &&
+           aExpireTime != 0)) &&
+         aExpireTime <= EXPIRY_NOW;
+}
+
+NS_IMETHODIMP
+PermissionManager::AddFromPrincipalAndPersistInPrivateBrowsing(
+    nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t aPermission) {
+  ENSURE_NOT_CHILD_PROCESS;
+  NS_ENSURE_ARG_POINTER(aPrincipal);
+  // We don't add the system principal because it actually has no URI and we
+  // always allow action for them.
+  if (aPrincipal->IsSystemPrincipal()) {
+    return NS_OK;
+  }
+
+  // Null principals can't meaningfully have persisted permissions attached to
+  // them, so we don't allow adding permissions for them.
+  if (aPrincipal->GetIsNullPrincipal()) {
+    return NS_OK;
+  }
+
+  // Permissions may not be added to expanded principals.
+  if (IsExpandedPrincipal(aPrincipal)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // A modificationTime of zero will cause AddInternal to use now().
+  int64_t modificationTime = 0;
+
+  return AddInternal(aPrincipal, aType, aPermission, 0,
+                     nsIPermissionManager::EXPIRE_NEVER,
+                     /* aExpireTime */ 0, modificationTime, eNotify, eWriteToDB,
+                     /* aIgnoreSessionPermissions */ false,
+                     /* aOriginString*/ nullptr,
+                     /* aAllowPersistInPrivateBrowsing */ true);
+}
+
+NS_IMETHODIMP
+PermissionManager::AddFromPrincipal(nsIPrincipal* aPrincipal,
+                                    const nsACString& aType,
+                                    uint32_t aPermission, uint32_t aExpireType,
+                                    int64_t aExpireTime) {
+  ENSURE_NOT_CHILD_PROCESS;
+  NS_ENSURE_ARG_POINTER(aPrincipal);
+  NS_ENSURE_TRUE(aExpireType == nsIPermissionManager::EXPIRE_NEVER ||
+                     aExpireType == nsIPermissionManager::EXPIRE_TIME ||
+                     aExpireType == nsIPermissionManager::EXPIRE_SESSION ||
+                     aExpireType == nsIPermissionManager::EXPIRE_POLICY,
+                 NS_ERROR_INVALID_ARG);
+
+  // Skip addition if the permission is already expired.
+  if (HasExpired(aExpireType, aExpireTime)) {
+    return NS_OK;
+  }
+
+  // We don't add the system principal because it actually has no URI and we
+  // always allow action for them.
+  if (aPrincipal->IsSystemPrincipal()) {
+    return NS_OK;
+  }
+
+  // Null principals can't meaningfully have persisted permissions attached to
+  // them, so we don't allow adding permissions for them.
+  if (aPrincipal->GetIsNullPrincipal()) {
+    return NS_OK;
+  }
+
+  // Permissions may not be added to expanded principals.
+  if (IsExpandedPrincipal(aPrincipal)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // A modificationTime of zero will cause AddInternal to use now().
+  int64_t modificationTime = 0;
+
+  return AddInternal(aPrincipal, aType, aPermission, 0, aExpireType,
+                     aExpireTime, modificationTime, eNotify, eWriteToDB);
+}
+
+nsresult PermissionManager::AddInternal(
+    nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t aPermission,
+    int64_t aID, uint32_t aExpireType, int64_t aExpireTime,
+    int64_t aModificationTime, NotifyOperationType aNotifyOperation,
+    DBOperationType aDBOperation, const bool aIgnoreSessionPermissions,
+    const nsACString* aOriginString,
+    const bool aAllowPersistInPrivateBrowsing) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  EnsureReadCompleted();
+
+  nsresult rv = NS_OK;
+  nsAutoCString origin;
+  // Only attempt to compute the origin string when it is going to be needed
+  // later on in the function.
+  if (!IsChildProcess() ||
+      (aDBOperation == eWriteToDB && IsPersistentExpire(aExpireType, aType))) {
+    if (aOriginString) {
+      // Use the origin string provided by the caller.
+      origin = *aOriginString;
+    } else {
+      if (IsSiteScopedPermission(aType)) {
+        rv = GetSiteFromPrincipal(aPrincipal, IsOAForceStripPermission(aType),
+                                  origin);
+      } else {
+        // Compute it from the principal provided.
+        rv = GetOriginFromPrincipal(aPrincipal, IsOAForceStripPermission(aType),
+                                    origin);
+      }
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+  }
+
+  // Unless the caller sets aAllowPersistInPrivateBrowsing, only store
+  // permissions for the session in Private Browsing. Except for default
+  // permissions which are stored in-memory only and imported each startup. We
+  // also allow setting persistent UKNOWN_ACTION, to support removing default
+  // private browsing permissions.
+  if (!aAllowPersistInPrivateBrowsing && aID != cIDPermissionIsDefault &&
+      aPermission != UNKNOWN_ACTION && aExpireType != EXPIRE_SESSION) {
+    uint32_t privateBrowsingId =
+        nsScriptSecurityManager::DEFAULT_PRIVATE_BROWSING_ID;
+    nsresult rv = aPrincipal->GetPrivateBrowsingId(&privateBrowsingId);
+    if (NS_SUCCEEDED(rv) &&
+        privateBrowsingId !=
+            nsScriptSecurityManager::DEFAULT_PRIVATE_BROWSING_ID) {
+      aExpireType = EXPIRE_SESSION;
+    }
+  }
+
+  // Let's send the new permission to the content process only if it has to be
+  // notified.
+  if (!IsChildProcess() && aNotifyOperation == eNotify) {
+    IPC::Permission permission(origin, aType, aPermission, aExpireType,
+                               aExpireTime);
+
+    nsAutoCString permissionKey;
+    GetKeyForPermission(aPrincipal, aType, permissionKey);
+
+    nsTArray<ContentParent*> cplist;
+    ContentParent::GetAll(cplist);
+    for (uint32_t i = 0; i < cplist.Length(); ++i) {
+      ContentParent* cp = cplist[i];
+      if (cp->NeedsPermissionsUpdate(permissionKey))
+        Unused << cp->SendAddPermission(permission);
+    }
+  }
+
+  MOZ_ASSERT(PermissionAvailable(aPrincipal, aType));
+
+  // look up the type index
+  int32_t typeIndex = GetTypeIndex(aType, true);
+  NS_ENSURE_TRUE(typeIndex != -1, NS_ERROR_OUT_OF_MEMORY);
+
+  // When an entry already exists, PutEntry will return that, instead
+  // of adding a new one
+  RefPtr<PermissionKey> key = PermissionKey::CreateFromPrincipal(
+      aPrincipal, IsOAForceStripPermission(aType),
+      IsSiteScopedPermission(aType), rv);
+  if (!key) {
+    MOZ_ASSERT(NS_FAILED(rv));
+    return rv;
+  }
+
+  PermissionHashKey* entry = mPermissionTable.PutEntry(key);
+  if (!entry) return NS_ERROR_FAILURE;
+  if (!entry->GetKey()) {
+    mPermissionTable.RemoveEntry(entry);
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  // figure out the transaction type, and get any existing permission value
+  OperationType op;
+  int32_t index = entry->GetPermissionIndex(typeIndex);
+  if (index == -1) {
+    if (aPermission == nsIPermissionManager::UNKNOWN_ACTION)
+      op = eOperationNone;
+    else
+      op = eOperationAdding;
+
+  } else {
+    PermissionEntry oldPermissionEntry = entry->GetPermissions()[index];
+
+    // remove the permission if the permission is UNKNOWN, update the
+    // permission if its value or expire type have changed OR if the time has
+    // changed and the expire type is time, otherwise, don't modify.  There's
+    // no need to modify a permission that doesn't expire with time when the
+    // only thing changed is the expire time.
+    if (aPermission == oldPermissionEntry.mPermission &&
+        aExpireType == oldPermissionEntry.mExpireType &&
+        (aExpireType == nsIPermissionManager::EXPIRE_NEVER ||
+         aExpireTime == oldPermissionEntry.mExpireTime))
+      op = eOperationNone;
+    else if (oldPermissionEntry.mID == cIDPermissionIsDefault)
+      // The existing permission is one added as a default and the new
+      // permission doesn't exactly match so we are replacing the default.  This
+      // is true even if the new permission is UNKNOWN_ACTION (which means a
+      // "logical remove" of the default)
+      op = eOperationReplacingDefault;
+    else if (aID == cIDPermissionIsDefault)
+      // We are adding a default permission but a "real" permission already
+      // exists.  This almost-certainly means we just did a removeAllSince and
+      // are re-importing defaults - so we can ignore this.
+      op = eOperationNone;
+    else if (aPermission == nsIPermissionManager::UNKNOWN_ACTION)
+      op = eOperationRemoving;
+    else
+      op = eOperationChanging;
+  }
+
+  // child processes should *always* be passed a modificationTime of zero.
+  MOZ_ASSERT(!IsChildProcess() || aModificationTime == 0);
+
+  // do the work for adding, deleting, or changing a permission:
+  // update the in-memory list, write to the db, and notify consumers.
+  int64_t id;
+  if (aModificationTime == 0) {
+    aModificationTime = EXPIRY_NOW;
+  }
+
+  switch (op) {
+    case eOperationNone: {
+      // nothing to do
+      return NS_OK;
+    }
+
+    case eOperationAdding: {
+      if (aDBOperation == eWriteToDB) {
+        // we'll be writing to the database - generate a known unique id
+        id = ++mLargestID;
+      } else {
+        // we're reading from the database - use the id already assigned
+        id = aID;
+      }
+
+      entry->GetPermissions().AppendElement(
+          PermissionEntry(id, typeIndex, aPermission, aExpireType, aExpireTime,
+                          aModificationTime));
+
+      if (aDBOperation == eWriteToDB &&
+          IsPersistentExpire(aExpireType, aType)) {
+        UpdateDB(op, id, origin, aType, aPermission, aExpireType, aExpireTime,
+                 aModificationTime);
+      }
+
+      if (aNotifyOperation == eNotify) {
+        NotifyObserversWithPermission(aPrincipal, mTypeArray[typeIndex],
+                                      aPermission, aExpireType, aExpireTime,
+                                      aModificationTime, u"added");
+      }
+
+      break;
+    }
+
+    case eOperationRemoving: {
+      PermissionEntry oldPermissionEntry = entry->GetPermissions()[index];
+      id = oldPermissionEntry.mID;
+
+      // If the type we want to remove is EXPIRE_POLICY, we need to reject
+      // attempts to change the permission.
+      if (entry->GetPermissions()[index].mExpireType == EXPIRE_POLICY) {
+        NS_WARNING("Attempting to remove EXPIRE_POLICY permission");
+        break;
+      }
+
+      entry->GetPermissions().RemoveElementAt(index);
+
+      if (aDBOperation == eWriteToDB)
+        // We care only about the id here so we pass dummy values for all other
+        // parameters.
+        UpdateDB(op, id, ""_ns, ""_ns, 0, nsIPermissionManager::EXPIRE_NEVER, 0,
+                 0);
+
+      if (aNotifyOperation == eNotify) {
+        NotifyObserversWithPermission(
+            aPrincipal, mTypeArray[typeIndex], oldPermissionEntry.mPermission,
+            oldPermissionEntry.mExpireType, oldPermissionEntry.mExpireTime,
+            oldPermissionEntry.mModificationTime, u"deleted");
+      }
+
+      // If there are no more permissions stored for that entry, clear it.
+      if (entry->GetPermissions().IsEmpty()) {
+        mPermissionTable.RemoveEntry(entry);
+      }
+
+      break;
+    }
+
+    case eOperationChanging: {
+      id = entry->GetPermissions()[index].mID;
+
+      // If the existing type is EXPIRE_POLICY, we need to reject attempts to
+      // change the permission.
+      if (entry->GetPermissions()[index].mExpireType == EXPIRE_POLICY) {
+        NS_WARNING("Attempting to modify EXPIRE_POLICY permission");
+        break;
+      }
+
+      PermissionEntry oldPermissionEntry = entry->GetPermissions()[index];
+
+      // If the new expireType is EXPIRE_SESSION, then we have to keep a
+      // copy of the previous permission/expireType values. This cached value
+      // will be used when restoring the permissions of an app.
+      if (entry->GetPermissions()[index].mExpireType !=
+              nsIPermissionManager::EXPIRE_SESSION &&
+          aExpireType == nsIPermissionManager::EXPIRE_SESSION) {
+        entry->GetPermissions()[index].mNonSessionPermission =
+            entry->GetPermissions()[index].mPermission;
+        entry->GetPermissions()[index].mNonSessionExpireType =
+            entry->GetPermissions()[index].mExpireType;
+        entry->GetPermissions()[index].mNonSessionExpireTime =
+            entry->GetPermissions()[index].mExpireTime;
+      } else if (aExpireType != nsIPermissionManager::EXPIRE_SESSION) {
+        entry->GetPermissions()[index].mNonSessionPermission = aPermission;
+        entry->GetPermissions()[index].mNonSessionExpireType = aExpireType;
+        entry->GetPermissions()[index].mNonSessionExpireTime = aExpireTime;
+      }
+
+      entry->GetPermissions()[index].mPermission = aPermission;
+      entry->GetPermissions()[index].mExpireType = aExpireType;
+      entry->GetPermissions()[index].mExpireTime = aExpireTime;
+      entry->GetPermissions()[index].mModificationTime = aModificationTime;
+
+      if (aDBOperation == eWriteToDB) {
+        bool newIsPersistentExpire = IsPersistentExpire(aExpireType, aType);
+        bool oldIsPersistentExpire =
+            IsPersistentExpire(oldPermissionEntry.mExpireType, aType);
+
+        if (!newIsPersistentExpire && oldIsPersistentExpire) {
+          // Maybe we have to remove the previous permission if that was
+          // persistent.
+          UpdateDB(eOperationRemoving, id, ""_ns, ""_ns, 0,
+                   nsIPermissionManager::EXPIRE_NEVER, 0, 0);
+        } else if (newIsPersistentExpire && !oldIsPersistentExpire) {
+          // It could also be that the previous permission was session-only but
+          // this needs to be written into the DB. In this case, we have to run
+          // an Adding operation.
+          UpdateDB(eOperationAdding, id, origin, aType, aPermission,
+                   aExpireType, aExpireTime, aModificationTime);
+        } else if (newIsPersistentExpire) {
+          // This is the a simple update.  We care only about the id, the
+          // permission and expireType/expireTime/modificationTime here. We pass
+          // dummy values for all other parameters.
+          UpdateDB(op, id, ""_ns, ""_ns, aPermission, aExpireType, aExpireTime,
+                   aModificationTime);
+        }
+      }
+
+      if (aNotifyOperation == eNotify) {
+        NotifyObserversWithPermission(aPrincipal, mTypeArray[typeIndex],
+                                      aPermission, aExpireType, aExpireTime,
+                                      aModificationTime, u"changed");
+      }
+
+      break;
+    }
+    case eOperationReplacingDefault: {
+      // this is handling the case when we have an existing permission
+      // entry that was created as a "default" (and thus isn't in the DB) with
+      // an explicit permission (that may include UNKNOWN_ACTION.)
+      // Note we will *not* get here if we are replacing an already replaced
+      // default value - that is handled as eOperationChanging.
+
+      // So this is a hybrid of eOperationAdding (as we are writing a new entry
+      // to the DB) and eOperationChanging (as we are replacing the in-memory
+      // repr and sending a "changed" notification).
+
+      // We want a new ID even if not writing to the DB, so the modified entry
+      // in memory doesn't have the magic cIDPermissionIsDefault value.
+      id = ++mLargestID;
+
+      // The default permission being replaced can't have session expiry or
+      // policy expiry.
+      NS_ENSURE_TRUE(entry->GetPermissions()[index].mExpireType !=
+                         nsIPermissionManager::EXPIRE_SESSION,
+                     NS_ERROR_UNEXPECTED);
+      NS_ENSURE_TRUE(entry->GetPermissions()[index].mExpireType !=
+                         nsIPermissionManager::EXPIRE_POLICY,
+                     NS_ERROR_UNEXPECTED);
+      // We don't support the new entry having any expiry - supporting that
+      // would make things far more complex and none of the permissions we set
+      // as a default support that.
+      NS_ENSURE_TRUE(aExpireType == EXPIRE_NEVER, NS_ERROR_UNEXPECTED);
+
+      // update the existing entry in memory.
+      entry->GetPermissions()[index].mID = id;
+      entry->GetPermissions()[index].mPermission = aPermission;
+      entry->GetPermissions()[index].mExpireType = aExpireType;
+      entry->GetPermissions()[index].mExpireTime = aExpireTime;
+      entry->GetPermissions()[index].mModificationTime = aModificationTime;
+
+      // If requested, create the entry in the DB.
+      if (aDBOperation == eWriteToDB &&
+          IsPersistentExpire(aExpireType, aType)) {
+        UpdateDB(eOperationAdding, id, origin, aType, aPermission, aExpireType,
+                 aExpireTime, aModificationTime);
+      }
+
+      if (aNotifyOperation == eNotify) {
+        NotifyObserversWithPermission(aPrincipal, mTypeArray[typeIndex],
+                                      aPermission, aExpireType, aExpireTime,
+                                      aModificationTime, u"changed");
+      }
+
+    } break;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionManager::RemoveFromPrincipal(nsIPrincipal* aPrincipal,
+                                       const nsACString& aType) {
+  ENSURE_NOT_CHILD_PROCESS;
+  NS_ENSURE_ARG_POINTER(aPrincipal);
+
+  // System principals are never added to the database, no need to remove them.
+  if (aPrincipal->IsSystemPrincipal()) {
+    return NS_OK;
+  }
+
+  // Permissions may not be added to expanded principals.
+  if (IsExpandedPrincipal(aPrincipal)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // AddInternal() handles removal, just let it do the work
+  return AddInternal(aPrincipal, aType, nsIPermissionManager::UNKNOWN_ACTION, 0,
+                     nsIPermissionManager::EXPIRE_NEVER, 0, 0, eNotify,
+                     eWriteToDB);
+}
+
+NS_IMETHODIMP
+PermissionManager::RemovePermission(nsIPermission* aPerm) {
+  if (!aPerm) {
+    return NS_OK;
+  }
+  nsCOMPtr<nsIPrincipal> principal;
+  nsresult rv = aPerm->GetPrincipal(getter_AddRefs(principal));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoCString type;
+  rv = aPerm->GetType(type);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Permissions are uniquely identified by their principal and type.
+  // We remove the permission using these two pieces of data.
+  return RemoveFromPrincipal(principal, type);
+}
+
+NS_IMETHODIMP
+PermissionManager::RemoveAll() {
+  ENSURE_NOT_CHILD_PROCESS;
+  return RemoveAllInternal(true);
+}
+
+NS_IMETHODIMP
+PermissionManager::RemoveAllSince(int64_t aSince) {
+  ENSURE_NOT_CHILD_PROCESS;
+  return RemoveAllModifiedSince(aSince);
+}
+
+template <class T>
+nsresult PermissionManager::RemovePermissionEntries(T aCondition) {
+  EnsureReadCompleted();
+
+  Vector<std::tuple<nsCOMPtr<nsIPrincipal>, nsCString, nsCString>, 10> array;
+  for (const PermissionHashKey& entry : mPermissionTable) {
+    for (const auto& permEntry : entry.GetPermissions()) {
+      if (!aCondition(permEntry)) {
+        continue;
+      }
+
+      nsCOMPtr<nsIPrincipal> principal;
+      nsresult rv = GetPrincipalFromOrigin(
+          entry.GetKey()->mOrigin,
+          IsOAForceStripPermission(mTypeArray[permEntry.mType]),
+          getter_AddRefs(principal));
+      if (NS_FAILED(rv)) {
+        continue;
+      }
+
+      if (!array.emplaceBack(principal, mTypeArray[permEntry.mType],
+                             entry.GetKey()->mOrigin)) {
+        continue;
+      }
+    }
+  }
+
+  for (auto& i : array) {
+    // AddInternal handles removal, so let it do the work...
+    AddInternal(
+        std::get<0>(i), std::get<1>(i), nsIPermissionManager::UNKNOWN_ACTION, 0,
+        nsIPermissionManager::EXPIRE_NEVER, 0, 0, PermissionManager::eNotify,
+        PermissionManager::eWriteToDB, false, &std::get<2>(i));
+  }
+
+  // now re-import any defaults as they may now be required if we just deleted
+  // an override.
+  ImportLatestDefaults();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionManager::RemoveByType(const nsACString& aType) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  int32_t typeIndex = GetTypeIndex(aType, false);
+  // If type == -1, the type isn't known,
+  // so just return NS_OK
+  if (typeIndex == -1) {
+    return NS_OK;
+  }
+
+  return RemovePermissionEntries(
+      [typeIndex](const PermissionEntry& aPermEntry) {
+        return static_cast<uint32_t>(typeIndex) == aPermEntry.mType;
+      });
+}
+
+NS_IMETHODIMP
+PermissionManager::RemoveByTypeSince(const nsACString& aType,
+                                     int64_t aModificationTime) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  int32_t typeIndex = GetTypeIndex(aType, false);
+  // If type == -1, the type isn't known,
+  // so just return NS_OK
+  if (typeIndex == -1) {
+    return NS_OK;
+  }
+
+  return RemovePermissionEntries(
+      [typeIndex, aModificationTime](const PermissionEntry& aPermEntry) {
+        return uint32_t(typeIndex) == aPermEntry.mType &&
+               aModificationTime <= aPermEntry.mModificationTime;
+      });
+}
+
+void PermissionManager::CloseDB(CloseDBNextOp aNextOp) {
+  EnsureReadCompleted();
+
+  mState = eClosed;
+
+  nsCOMPtr<nsIInputStream> defaultsInputStream;
+  if (aNextOp == eRebuldOnSuccess) {
+    defaultsInputStream = GetDefaultsInputStream();
+  }
+
+  RefPtr<PermissionManager> self = this;
+  mThread->Dispatch(NS_NewRunnableFunction(
+      "PermissionManager::CloseDB", [self, aNextOp, defaultsInputStream] {
+        auto data = self->mThreadBoundData.Access();
+        // Null the statements, this will finalize them.
+        data->mStmtInsert = nullptr;
+        data->mStmtDelete = nullptr;
+        data->mStmtUpdate = nullptr;
+        if (data->mDBConn) {
+          DebugOnly<nsresult> rv = data->mDBConn->Close();
+          MOZ_ASSERT(NS_SUCCEEDED(rv));
+          data->mDBConn = nullptr;
+
+          if (aNextOp == eRebuldOnSuccess) {
+            self->TryInitDB(true, defaultsInputStream);
+          }
+        }
+
+        if (aNextOp == eShutdown) {
+          NS_DispatchToMainThread(NS_NewRunnableFunction(
+              "PermissionManager::MaybeCompleteShutdown",
+              [self] { self->MaybeCompleteShutdown(); }));
+        }
+      }));
+}
+
+nsresult PermissionManager::RemoveAllFromIPC() {
+  MOZ_ASSERT(IsChildProcess());
+
+  // Remove from memory and notify immediately. Since the in-memory
+  // database is authoritative, we do not need confirmation from the
+  // on-disk database to notify observers.
+  RemoveAllFromMemory();
+
+  return NS_OK;
+}
+
+nsresult PermissionManager::RemoveAllInternal(bool aNotifyObservers) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  EnsureReadCompleted();
+
+  // Let's broadcast the removeAll() to any content process.
+  nsTArray<ContentParent*> parents;
+  ContentParent::GetAll(parents);
+  for (ContentParent* parent : parents) {
+    Unused << parent->SendRemoveAllPermissions();
+  }
+
+  // Remove from memory and notify immediately. Since the in-memory
+  // database is authoritative, we do not need confirmation from the
+  // on-disk database to notify observers.
+  RemoveAllFromMemory();
+
+  // Re-import the defaults
+  ImportLatestDefaults();
+
+  if (aNotifyObservers) {
+    NotifyObservers(nullptr, u"cleared");
+  }
+
+  RefPtr<PermissionManager> self = this;
+  mThread->Dispatch(
+      NS_NewRunnableFunction("PermissionManager::RemoveAllInternal", [self] {
+        auto data = self->mThreadBoundData.Access();
+
+        if (self->mState == eClosed || !data->mDBConn) {
+          return;
+        }
+
+        // clear the db
+        nsresult rv =
+            data->mDBConn->ExecuteSimpleSQL("DELETE FROM moz_perms"_ns);
+        if (NS_WARN_IF(NS_FAILED(rv))) {
+          NS_DispatchToMainThread(NS_NewRunnableFunction(
+              "PermissionManager::RemoveAllInternal-Failure",
+              [self] { self->CloseDB(eRebuldOnSuccess); }));
+        }
+      }));
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionManager::TestExactPermissionFromPrincipal(nsIPrincipal* aPrincipal,
+                                                    const nsACString& aType,
+                                                    uint32_t* aPermission) {
+  return CommonTestPermission(aPrincipal, -1, aType, aPermission,
+                              nsIPermissionManager::UNKNOWN_ACTION, false, true,
+                              true);
+}
+
+NS_IMETHODIMP
+PermissionManager::TestExactPermanentPermission(nsIPrincipal* aPrincipal,
+                                                const nsACString& aType,
+                                                uint32_t* aPermission) {
+  return CommonTestPermission(aPrincipal, -1, aType, aPermission,
+                              nsIPermissionManager::UNKNOWN_ACTION, false, true,
+                              false);
+}
+
+nsresult PermissionManager::LegacyTestPermissionFromURI(
+    nsIURI* aURI, const OriginAttributes* aOriginAttributes,
+    const nsACString& aType, uint32_t* aPermission) {
+  return CommonTestPermission(aURI, aOriginAttributes, -1, aType, aPermission,
+                              nsIPermissionManager::UNKNOWN_ACTION, false,
+                              false, true);
+}
+
+NS_IMETHODIMP
+PermissionManager::TestPermissionFromPrincipal(nsIPrincipal* aPrincipal,
+                                               const nsACString& aType,
+                                               uint32_t* aPermission) {
+  return CommonTestPermission(aPrincipal, -1, aType, aPermission,
+                              nsIPermissionManager::UNKNOWN_ACTION, false,
+                              false, true);
+}
+
+NS_IMETHODIMP
+PermissionManager::GetPermissionObject(nsIPrincipal* aPrincipal,
+                                       const nsACString& aType,
+                                       bool aExactHostMatch,
+                                       nsIPermission** aResult) {
+  NS_ENSURE_ARG_POINTER(aPrincipal);
+  *aResult = nullptr;
+
+  EnsureReadCompleted();
+
+  if (aPrincipal->IsSystemPrincipal()) {
+    return NS_OK;
+  }
+
+  // Querying the permission object of an nsEP is non-sensical.
+  if (IsExpandedPrincipal(aPrincipal)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  MOZ_ASSERT(PermissionAvailable(aPrincipal, aType));
+
+  int32_t typeIndex = GetTypeIndex(aType, false);
+  // If type == -1, the type isn't known,
+  // so just return NS_OK
+  if (typeIndex == -1) return NS_OK;
+
+  PermissionHashKey* entry =
+      GetPermissionHashKey(aPrincipal, typeIndex, aExactHostMatch);
+  if (!entry) {
+    return NS_OK;
+  }
+
+  // We don't call GetPermission(typeIndex) because that returns a fake
+  // UNKNOWN_ACTION entry if there is no match.
+  int32_t idx = entry->GetPermissionIndex(typeIndex);
+  if (-1 == idx) {
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIPrincipal> principal;
+  nsresult rv = GetPrincipalFromOrigin(entry->GetKey()->mOrigin,
+                                       IsOAForceStripPermission(aType),
+                                       getter_AddRefs(principal));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  PermissionEntry& perm = entry->GetPermissions()[idx];
+  nsCOMPtr<nsIPermission> r = Permission::Create(
+      principal, mTypeArray[perm.mType], perm.mPermission, perm.mExpireType,
+      perm.mExpireTime, perm.mModificationTime);
+  if (NS_WARN_IF(!r)) {
+    return NS_ERROR_FAILURE;
+  }
+  r.forget(aResult);
+  return NS_OK;
+}
+
+nsresult PermissionManager::CommonTestPermissionInternal(
+    nsIPrincipal* aPrincipal, nsIURI* aURI,
+    const OriginAttributes* aOriginAttributes, int32_t aTypeIndex,
+    const nsACString& aType, uint32_t* aPermission, bool aExactHostMatch,
+    bool aIncludingSession) {
+  MOZ_ASSERT(aPrincipal || aURI);
+  NS_ENSURE_ARG_POINTER(aPrincipal || aURI);
+  MOZ_ASSERT_IF(aPrincipal, !aURI && !aOriginAttributes);
+  MOZ_ASSERT_IF(aURI || aOriginAttributes, !aPrincipal);
+
+  EnsureReadCompleted();
+
+#ifdef DEBUG
+  {
+    nsCOMPtr<nsIPrincipal> prin = aPrincipal;
+    if (!prin) {
+      if (aURI) {
+        prin = BasePrincipal::CreateContentPrincipal(aURI, OriginAttributes());
+      }
+    }
+    MOZ_ASSERT(prin);
+    MOZ_ASSERT(PermissionAvailable(prin, aType));
+  }
+#endif
+
+  PermissionHashKey* entry =
+      aPrincipal ? GetPermissionHashKey(aPrincipal, aTypeIndex, aExactHostMatch)
+                 : GetPermissionHashKey(aURI, aOriginAttributes, aTypeIndex,
+                                        aExactHostMatch);
+  if (!entry || (!aIncludingSession &&
+                 entry->GetPermission(aTypeIndex).mNonSessionExpireType ==
+                     nsIPermissionManager::EXPIRE_SESSION)) {
+    return NS_OK;
+  }
+
+  *aPermission = aIncludingSession
+                     ? entry->GetPermission(aTypeIndex).mPermission
+                     : entry->GetPermission(aTypeIndex).mNonSessionPermission;
+
+  return NS_OK;
+}
+
+// Helper function to filter permissions using a condition function.
+template <class T>
+nsresult PermissionManager::GetPermissionEntries(
+    T aCondition, nsTArray<RefPtr<nsIPermission>>& aResult) {
+  aResult.Clear();
+  if (XRE_IsContentProcess()) {
+    NS_WARNING(
+        "Iterating over all permissions is not available in the "
+        "content process, as not all permissions may be available.");
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  EnsureReadCompleted();
+
+  for (const PermissionHashKey& entry : mPermissionTable) {
+    for (const auto& permEntry : entry.GetPermissions()) {
+      // Given how "default" permissions work and the possibility of them being
+      // overridden with UNKNOWN_ACTION, we might see this value here - but we
+      // do *not* want to return them via the enumerator.
+      if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+        continue;
+      }
+
+      // If the permission is expired, skip it. We're not deleting it here
+      // because we're iterating over a lot of permissions.
+      // It will be removed as part of the daily maintenance later.
+      if (HasExpired(permEntry.mExpireType, permEntry.mExpireTime)) {
+        continue;
+      }
+
+      if (!aCondition(permEntry)) {
+        continue;
+      }
+
+      nsCOMPtr<nsIPrincipal> principal;
+      nsresult rv = GetPrincipalFromOrigin(
+          entry.GetKey()->mOrigin,
+          IsOAForceStripPermission(mTypeArray[permEntry.mType]),
+          getter_AddRefs(principal));
+      if (NS_FAILED(rv)) {
+        continue;
+      }
+
+      RefPtr<nsIPermission> permission = Permission::Create(
+          principal, mTypeArray[permEntry.mType], permEntry.mPermission,
+          permEntry.mExpireType, permEntry.mExpireTime,
+          permEntry.mModificationTime);
+      if (NS_WARN_IF(!permission)) {
+        continue;
+      }
+      aResult.AppendElement(std::move(permission));
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP PermissionManager::GetAll(
+    nsTArray<RefPtr<nsIPermission>>& aResult) {
+  return GetPermissionEntries(
+      [](const PermissionEntry& aPermEntry) { return true; }, aResult);
+}
+
+NS_IMETHODIMP PermissionManager::GetAllByTypeSince(
+    const nsACString& aPrefix, int64_t aSince,
+    nsTArray<RefPtr<nsIPermission>>& aResult) {
+  // Check that aSince is a reasonable point in time, not in the future
+  if (aSince > (PR_Now() / PR_USEC_PER_MSEC)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  return GetPermissionEntries(
+      [&](const PermissionEntry& aPermEntry) {
+        return mTypeArray[aPermEntry.mType].Equals(aPrefix) &&
+               aSince <= aPermEntry.mModificationTime;
+      },
+      aResult);
+}
+
+NS_IMETHODIMP PermissionManager::GetAllWithTypePrefix(
+    const nsACString& aPrefix, nsTArray<RefPtr<nsIPermission>>& aResult) {
+  return GetPermissionEntries(
+      [&](const PermissionEntry& aPermEntry) {
+        return StringBeginsWith(mTypeArray[aPermEntry.mType], aPrefix);
+      },
+      aResult);
+}
+
+NS_IMETHODIMP PermissionManager::GetAllByTypes(
+    const nsTArray<nsCString>& aTypes,
+    nsTArray<RefPtr<nsIPermission>>& aResult) {
+  if (aTypes.IsEmpty()) {
+    return NS_OK;
+  }
+
+  return GetPermissionEntries(
+      [&](const PermissionEntry& aPermEntry) {
+        return aTypes.Contains(mTypeArray[aPermEntry.mType]);
+      },
+      aResult);
+}
+
+nsresult PermissionManager::GetAllForPrincipalHelper(
+    nsIPrincipal* aPrincipal, bool aSiteScopePermissions,
+    nsTArray<RefPtr<nsIPermission>>& aResult) {
+  nsresult rv;
+  RefPtr<PermissionKey> key = PermissionKey::CreateFromPrincipal(
+      aPrincipal, false, aSiteScopePermissions, rv);
+  if (!key) {
+    MOZ_ASSERT(NS_FAILED(rv));
+    return rv;
+  }
+  PermissionHashKey* entry = mPermissionTable.GetEntry(key);
+
+  nsTArray<PermissionEntry> strippedPerms;
+  rv = GetStripPermsForPrincipal(aPrincipal, aSiteScopePermissions,
+                                 strippedPerms);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (entry) {
+    for (const auto& permEntry : entry->GetPermissions()) {
+      // Only return custom permissions
+      if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+        continue;
+      }
+
+      // If the permission is expired, skip it. We're not deleting it here
+      // because we're iterating over a lot of permissions.
+      // It will be removed as part of the daily maintenance later.
+      if (HasExpired(permEntry.mExpireType, permEntry.mExpireTime)) {
+        continue;
+      }
+
+      // Make sure that we only get site scoped permissions if this
+      // helper is being invoked for that purpose.
+      if (aSiteScopePermissions !=
+          IsSiteScopedPermission(mTypeArray[permEntry.mType])) {
+        continue;
+      }
+
+      // Stripped principal permissions overwrite regular ones
+      // For each permission check if there is a stripped permission we should
+      // use instead
+      PermissionEntry perm = permEntry;
+      nsTArray<PermissionEntry>::index_type index = 0;
+      for (const auto& strippedPerm : strippedPerms) {
+        if (strippedPerm.mType == permEntry.mType) {
+          perm = strippedPerm;
+          strippedPerms.RemoveElementAt(index);
+          break;
+        }
+        index++;
+      }
+
+      RefPtr<nsIPermission> permission = Permission::Create(
+          aPrincipal, mTypeArray[perm.mType], perm.mPermission,
+          perm.mExpireType, perm.mExpireTime, perm.mModificationTime);
+      if (NS_WARN_IF(!permission)) {
+        continue;
+      }
+      aResult.AppendElement(permission);
+    }
+  }
+
+  for (const auto& perm : strippedPerms) {
+    RefPtr<nsIPermission> permission = Permission::Create(
+        aPrincipal, mTypeArray[perm.mType], perm.mPermission, perm.mExpireType,
+        perm.mExpireTime, perm.mModificationTime);
+    if (NS_WARN_IF(!permission)) {
+      continue;
+    }
+    aResult.AppendElement(permission);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionManager::GetAllForPrincipal(
+    nsIPrincipal* aPrincipal, nsTArray<RefPtr<nsIPermission>>& aResult) {
+  nsresult rv;
+  aResult.Clear();
+  EnsureReadCompleted();
+
+  MOZ_ASSERT(PermissionAvailable(aPrincipal, ""_ns));
+
+  // First, append the non-site-scoped permissions.
+  rv = GetAllForPrincipalHelper(aPrincipal, false, aResult);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Second, append the site-scoped permissions.
+  return GetAllForPrincipalHelper(aPrincipal, true, aResult);
+}
+
+NS_IMETHODIMP PermissionManager::Observe(nsISupports* aSubject,
+                                         const char* aTopic,
+                                         const char16_t* someData) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  if (!nsCRT::strcmp(aTopic, "profile-do-change") && !mPermissionsFile) {
+    // profile startup is complete, and we didn't have the permissions file
+    // before; init the db from the new location
+    InitDB(false);
+  } else if (!nsCRT::strcmp(aTopic, "testonly-reload-permissions-from-disk")) {
+    // Testing mechanism to reload all permissions from disk. Because the
+    // permission manager automatically initializes itself at startup, tests
+    // that directly manipulate the permissions database need some way to reload
+    // the database for their changes to have any effect. This mechanism was
+    // introduced when moving the permissions manager from on-demand startup to
+    // always being initialized. This is not guarded by a pref because it's not
+    // dangerous to reload permissions from disk, just bad for performance.
+    RemoveAllFromMemory();
+    CloseDB(eNone);
+    InitDB(false);
+  } else if (!nsCRT::strcmp(aTopic, OBSERVER_TOPIC_IDLE_DAILY)) {
+    PerformIdleDailyMaintenance();
+  }
+
+  return NS_OK;
+}
+
+nsresult PermissionManager::RemoveAllModifiedSince(int64_t aModificationTime) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  return RemovePermissionEntries(
+      [aModificationTime](const PermissionEntry& aPermEntry) {
+        return aModificationTime <= aPermEntry.mModificationTime;
+      });
+}
+
+NS_IMETHODIMP
+PermissionManager::RemovePermissionsWithAttributes(const nsAString& aPattern) {
+  ENSURE_NOT_CHILD_PROCESS;
+  OriginAttributesPattern pattern;
+  if (!pattern.Init(aPattern)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  return RemovePermissionsWithAttributes(pattern);
+}
+
+nsresult PermissionManager::RemovePermissionsWithAttributes(
+    OriginAttributesPattern& aPattern) {
+  EnsureReadCompleted();
+
+  Vector<std::tuple<nsCOMPtr<nsIPrincipal>, nsCString, nsCString>, 10>
+      permissions;
+  for (const PermissionHashKey& entry : mPermissionTable) {
+    nsCOMPtr<nsIPrincipal> principal;
+    nsresult rv = GetPrincipalFromOrigin(entry.GetKey()->mOrigin, false,
+                                         getter_AddRefs(principal));
+    if (NS_FAILED(rv)) {
+      continue;
+    }
+
+    if (!aPattern.Matches(principal->OriginAttributesRef())) {
+      continue;
+    }
+
+    for (const auto& permEntry : entry.GetPermissions()) {
+      if (!permissions.emplaceBack(principal, mTypeArray[permEntry.mType],
+                                   entry.GetKey()->mOrigin)) {
+        continue;
+      }
+    }
+  }
+
+  for (auto& i : permissions) {
+    AddInternal(
+        std::get<0>(i), std::get<1>(i), nsIPermissionManager::UNKNOWN_ACTION, 0,
+        nsIPermissionManager::EXPIRE_NEVER, 0, 0, PermissionManager::eNotify,
+        PermissionManager::eWriteToDB, false, &std::get<2>(i));
+  }
+
+  return NS_OK;
+}
+
+nsresult PermissionManager::GetStripPermsForPrincipal(
+    nsIPrincipal* aPrincipal, bool aSiteScopePermissions,
+    nsTArray<PermissionEntry>& aResult) {
+  aResult.Clear();
+  aResult.SetCapacity(kStripOAPermissions.size());
+
+#ifdef __clang__
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wunreachable-code-return"
+#endif
+  // No special strip permissions
+  if (kStripOAPermissions.empty()) {
+    return NS_OK;
+  }
+#ifdef __clang__
+#  pragma clang diagnostic pop
+#endif
+
+  nsresult rv;
+  // Create a key for the principal, but strip any origin attributes.
+  // The key must be created aware of whether or not we are scoping to site.
+  RefPtr<PermissionKey> key = PermissionKey::CreateFromPrincipal(
+      aPrincipal, true, aSiteScopePermissions, rv);
+  if (!key) {
+    MOZ_ASSERT(NS_FAILED(rv));
+    return rv;
+  }
+
+  PermissionHashKey* hashKey = mPermissionTable.GetEntry(key);
+  if (!hashKey) {
+    return NS_OK;
+  }
+
+  for (const auto& permType : kStripOAPermissions) {
+    // if the permission type's site scoping does not match this function call,
+    // we don't care about it, so continue.
+    // As of time of writing, this never happens when aSiteScopePermissions
+    // is true because there is no common permission between kStripOAPermissions
+    // and kSiteScopedPermissions
+    if (aSiteScopePermissions != IsSiteScopedPermission(permType)) {
+      continue;
+    }
+    int32_t index = GetTypeIndex(permType, false);
+    if (index == -1) {
+      continue;
+    }
+    PermissionEntry perm = hashKey->GetPermission(index);
+    if (perm.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+      continue;
+    }
+    aResult.AppendElement(perm);
+  }
+
+  return NS_OK;
+}
+
+int32_t PermissionManager::GetTypeIndex(const nsACString& aType, bool aAdd) {
+  for (uint32_t i = 0; i < mTypeArray.length(); ++i) {
+    if (mTypeArray[i].Equals(aType)) {
+      return i;
+    }
+  }
+
+  if (!aAdd) {
+    // Not found, but that is ok - we were just looking.
+    return -1;
+  }
+
+  // This type was not registered before.
+  // append it to the array, without copy-constructing the string
+  if (!mTypeArray.emplaceBack(aType)) {
+    return -1;
+  }
+
+  return mTypeArray.length() - 1;
+}
+
+PermissionManager::PermissionHashKey* PermissionManager::GetPermissionHashKey(
+    nsIPrincipal* aPrincipal, uint32_t aType, bool aExactHostMatch) {
+  EnsureReadCompleted();
+
+  MOZ_ASSERT(PermissionAvailable(aPrincipal, mTypeArray[aType]));
+
+  nsresult rv;
+  RefPtr<PermissionKey> key = PermissionKey::CreateFromPrincipal(
+      aPrincipal, IsOAForceStripPermission(mTypeArray[aType]),
+      IsSiteScopedPermission(mTypeArray[aType]), rv);
+  if (!key) {
+    return nullptr;
+  }
+
+  PermissionHashKey* entry = mPermissionTable.GetEntry(key);
+
+  if (entry) {
+    PermissionEntry permEntry = entry->GetPermission(aType);
+
+    // if the entry is expired, remove and keep looking for others.
+    if (HasExpired(permEntry.mExpireType, permEntry.mExpireTime)) {
+      entry = nullptr;
+      RemoveFromPrincipal(aPrincipal, mTypeArray[aType]);
+    } else if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+      entry = nullptr;
+    }
+  }
+
+  if (entry) {
+    return entry;
+  }
+
+  // If aExactHostMatch wasn't true, we can check if the base domain has a
+  // permission entry.
+  if (!aExactHostMatch) {
+    nsCOMPtr<nsIPrincipal> principal = aPrincipal->GetNextSubDomainPrincipal();
+    if (principal) {
+      return GetPermissionHashKey(principal, aType, aExactHostMatch);
+    }
+  }
+
+  // No entry, really...
+  return nullptr;
+}
+
+PermissionManager::PermissionHashKey* PermissionManager::GetPermissionHashKey(
+    nsIURI* aURI, const OriginAttributes* aOriginAttributes, uint32_t aType,
+    bool aExactHostMatch) {
+  MOZ_ASSERT(aURI);
+
+#ifdef DEBUG
+  {
+    nsCOMPtr<nsIPrincipal> principal;
+    nsresult rv = NS_OK;
+    if (aURI) {
+      rv = GetPrincipal(aURI, getter_AddRefs(principal));
+    }
+    MOZ_ASSERT_IF(NS_SUCCEEDED(rv),
+                  PermissionAvailable(principal, mTypeArray[aType]));
+  }
+#endif
+
+  nsresult rv;
+  RefPtr<PermissionKey> key;
+
+  if (aOriginAttributes) {
+    key = PermissionKey::CreateFromURIAndOriginAttributes(
+        aURI, aOriginAttributes, IsOAForceStripPermission(mTypeArray[aType]),
+        rv);
+  } else {
+    key = PermissionKey::CreateFromURI(aURI, rv);
+  }
+
+  if (!key) {
+    return nullptr;
+  }
+
+  PermissionHashKey* entry = mPermissionTable.GetEntry(key);
+
+  if (entry) {
+    PermissionEntry permEntry = entry->GetPermission(aType);
+
+    // if the entry is expired, remove and keep looking for others.
+    if (HasExpired(permEntry.mExpireType, permEntry.mExpireTime)) {
+      entry = nullptr;
+      // If we need to remove a permission we mint a principal.  This is a bit
+      // inefficient, but hopefully this code path isn't super common.
+      nsCOMPtr<nsIPrincipal> principal;
+      if (aURI) {
+        nsresult rv = GetPrincipal(aURI, getter_AddRefs(principal));
+        if (NS_WARN_IF(NS_FAILED(rv))) {
+          return nullptr;
+        }
+      }
+      RemoveFromPrincipal(principal, mTypeArray[aType]);
+    } else if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+      entry = nullptr;
+    }
+  }
+
+  if (entry) {
+    return entry;
+  }
+
+  // If aExactHostMatch wasn't true, we can check if the base domain has a
+  // permission entry.
+  if (!aExactHostMatch) {
+    nsCOMPtr<nsIURI> uri;
+    if (aURI) {
+      uri = GetNextSubDomainURI(aURI);
+    }
+    if (uri) {
+      return GetPermissionHashKey(uri, aOriginAttributes, aType,
+                                  aExactHostMatch);
+    }
+  }
+
+  // No entry, really...
+  return nullptr;
+}
+
+nsresult PermissionManager::RemoveAllFromMemory() {
+  mLargestID = 0;
+  mTypeArray.clear();
+  mPermissionTable.Clear();
+
+  return NS_OK;
+}
+
+// wrapper function for mangling (host,type,perm,expireType,expireTime)
+// set into an nsIPermission.
+void PermissionManager::NotifyObserversWithPermission(
+    nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t aPermission,
+    uint32_t aExpireType, int64_t aExpireTime, int64_t aModificationTime,
+    const char16_t* aData) {
+  nsCOMPtr<nsIPermission> permission =
+      Permission::Create(aPrincipal, aType, aPermission, aExpireType,
+                         aExpireTime, aModificationTime);
+  if (permission) NotifyObservers(permission, aData);
+}
+
+// notify observers that the permission list changed. there are four possible
+// values for aData:
+// "deleted" means a permission was deleted. aPermission is the deleted
+// permission. "added"   means a permission was added. aPermission is the added
+// permission. "changed" means a permission was altered. aPermission is the new
+// permission. "cleared" means the entire permission list was cleared.
+// aPermission is null.
+void PermissionManager::NotifyObservers(nsIPermission* aPermission,
+                                        const char16_t* aData) {
+  nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
+  if (observerService)
+    observerService->NotifyObservers(aPermission, kPermissionChangeNotification,
+                                     aData);
+}
+
+nsresult PermissionManager::Read(const MonitorAutoLock& aProofOfLock) {
+  ENSURE_NOT_CHILD_PROCESS;
+
+  MOZ_ASSERT(!NS_IsMainThread());
+  auto data = mThreadBoundData.Access();
+
+  nsresult rv;
+  bool hasResult;
+  nsCOMPtr<mozIStorageStatement> stmt;
+
+  // Let's retrieve the last used ID.
+  rv = data->mDBConn->CreateStatement(
+      nsLiteralCString("SELECT MAX(id) FROM moz_perms"), getter_AddRefs(stmt));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
+    int64_t id = stmt->AsInt64(0);
+    mLargestID = id;
+  }
+
+  rv = data->mDBConn->CreateStatement(
+      nsLiteralCString(
+          "SELECT id, origin, type, permission, expireType, "
+          "expireTime, modificationTime "
+          "FROM moz_perms WHERE expireType != ?1 OR expireTime > ?2"),
+      getter_AddRefs(stmt));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = stmt->BindInt32ByIndex(0, nsIPermissionManager::EXPIRE_TIME);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = stmt->BindInt64ByIndex(1, EXPIRY_NOW);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool readError = false;
+
+  while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
+    ReadEntry entry;
+
+    // explicitly set our entry id counter for use in AddInternal(),
+    // and keep track of the largest id so we know where to pick up.
+    entry.mId = stmt->AsInt64(0);
+    MOZ_ASSERT(entry.mId <= mLargestID);
+
+    rv = stmt->GetUTF8String(1, entry.mOrigin);
+    if (NS_FAILED(rv)) {
+      readError = true;
+      continue;
+    }
+
+    rv = stmt->GetUTF8String(2, entry.mType);
+    if (NS_FAILED(rv)) {
+      readError = true;
+      continue;
+    }
+
+    entry.mPermission = stmt->AsInt32(3);
+    entry.mExpireType = stmt->AsInt32(4);
+
+    // convert into int64_t values (milliseconds)
+    entry.mExpireTime = stmt->AsInt64(5);
+    entry.mModificationTime = stmt->AsInt64(6);
+
+    entry.mFromMigration = false;
+
+    mReadEntries.AppendElement(entry);
+  }
+
+  if (readError) {
+    NS_ERROR("Error occured while reading the permissions database!");
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+void PermissionManager::CompleteMigrations() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mState == eReady);
+
+  nsresult rv;
+
+  nsTArray<MigrationEntry> entries;
+  {
+    MonitorAutoLock lock(mMonitor);
+    entries = std::move(mMigrationEntries);
+  }
+
+  for (const MigrationEntry& entry : entries) {
+    rv = UpgradeHostToOriginAndInsert(
+        entry.mHost, entry.mType, entry.mPermission, entry.mExpireType,
+        entry.mExpireTime, entry.mModificationTime, entry.mIsInBrowserElement,
+        [&](const nsACString& aOrigin, const nsCString& aType,
+            uint32_t aPermission, uint32_t aExpireType, int64_t aExpireTime,
+            int64_t aModificationTime) {
+          MaybeAddReadEntryFromMigration(aOrigin, aType, aPermission,
+                                         aExpireType, aExpireTime,
+                                         aModificationTime, entry.mId);
+          return NS_OK;
+        });
+    Unused << NS_WARN_IF(NS_FAILED(rv));
+  }
+}
+
+void PermissionManager::CompleteRead() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mState == eReady);
+
+  nsresult rv;
+
+  nsTArray<ReadEntry> entries;
+  {
+    MonitorAutoLock lock(mMonitor);
+    entries = std::move(mReadEntries);
+  }
+
+  for (const ReadEntry& entry : entries) {
+    nsCOMPtr<nsIPrincipal> principal;
+    rv = GetPrincipalFromOrigin(entry.mOrigin,
+                                IsOAForceStripPermission(entry.mType),
+                                getter_AddRefs(principal));
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      continue;
+    }
+
+    DBOperationType op = entry.mFromMigration ? eWriteToDB : eNoDBOperation;
+
+    rv = AddInternal(principal, entry.mType, entry.mPermission, entry.mId,
+                     entry.mExpireType, entry.mExpireTime,
+                     entry.mModificationTime, eDontNotify, op, false,
+                     &entry.mOrigin);
+    Unused << NS_WARN_IF(NS_FAILED(rv));
+  }
+}
+
+void PermissionManager::MaybeAddReadEntryFromMigration(
+    const nsACString& aOrigin, const nsCString& aType, uint32_t aPermission,
+    uint32_t aExpireType, int64_t aExpireTime, int64_t aModificationTime,
+    int64_t aId) {
+  MonitorAutoLock lock(mMonitor);
+
+  // We convert a migration to a ReadEntry only if we don't have an existing
+  // ReadEntry for the same origin + type.
+  for (const ReadEntry& entry : mReadEntries) {
+    if (entry.mOrigin == aOrigin && entry.mType == aType) {
+      return;
+    }
+  }
+
+  ReadEntry entry;
+  entry.mId = aId;
+  entry.mOrigin = aOrigin;
+  entry.mType = aType;
+  entry.mPermission = aPermission;
+  entry.mExpireType = aExpireType;
+  entry.mExpireTime = aExpireTime;
+  entry.mModificationTime = aModificationTime;
+  entry.mFromMigration = true;
+
+  mReadEntries.AppendElement(entry);
+}
+
+void PermissionManager::UpdateDB(OperationType aOp, int64_t aID,
+                                 const nsACString& aOrigin,
+                                 const nsACString& aType, uint32_t aPermission,
+                                 uint32_t aExpireType, int64_t aExpireTime,
+                                 int64_t aModificationTime) {
+  ENSURE_NOT_CHILD_PROCESS_NORET;
+
+  MOZ_ASSERT(NS_IsMainThread());
+  EnsureReadCompleted();
+
+  nsCString origin(aOrigin);
+  nsCString type(aType);
+
+  RefPtr<PermissionManager> self = this;
+  mThread->Dispatch(NS_NewRunnableFunction(
+      "PermissionManager::UpdateDB",
+      [self, aOp, aID, origin, type, aPermission, aExpireType, aExpireTime,
+       aModificationTime] {
+        nsresult rv;
+
+        auto data = self->mThreadBoundData.Access();
+
+        if (self->mState == eClosed || !data->mDBConn) {
+          // no statement is ok - just means we don't have a profile
+          return;
+        }
+
+        mozIStorageStatement* stmt = nullptr;
+        switch (aOp) {
+          case eOperationAdding: {
+            stmt = data->mStmtInsert;
+
+            rv = stmt->BindInt64ByIndex(0, aID);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindUTF8StringByIndex(1, origin);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindUTF8StringByIndex(2, type);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt32ByIndex(3, aPermission);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt32ByIndex(4, aExpireType);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt64ByIndex(5, aExpireTime);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt64ByIndex(6, aModificationTime);
+            break;
+          }
+
+          case eOperationRemoving: {
+            stmt = data->mStmtDelete;
+            rv = stmt->BindInt64ByIndex(0, aID);
+            break;
+          }
+
+          case eOperationChanging: {
+            stmt = data->mStmtUpdate;
+
+            rv = stmt->BindInt64ByIndex(0, aID);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt32ByIndex(1, aPermission);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt32ByIndex(2, aExpireType);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt64ByIndex(3, aExpireTime);
+            if (NS_FAILED(rv)) break;
+
+            rv = stmt->BindInt64ByIndex(4, aModificationTime);
+            break;
+          }
+
+          default: {
+            MOZ_ASSERT_UNREACHABLE("need a valid operation in UpdateDB()!");
+            rv = NS_ERROR_UNEXPECTED;
+            break;
+          }
+        }
+
+        if (NS_FAILED(rv)) {
+          NS_WARNING("db change failed!");
+          return;
+        }
+
+        rv = stmt->Execute();
+        MOZ_ASSERT(NS_SUCCEEDED(rv));
+      }));
+}
+
+bool PermissionManager::GetPermissionsFromOriginOrKey(
+    const nsACString& aOrigin, const nsACString& aKey,
+    nsTArray<IPC::Permission>& aPerms) {
+  EnsureReadCompleted();
+
+  aPerms.Clear();
+  if (NS_WARN_IF(XRE_IsContentProcess())) {
+    return false;
+  }
+
+  for (const PermissionHashKey& entry : mPermissionTable) {
+    nsAutoCString permissionKey;
+    if (aOrigin.IsEmpty()) {
+      // We can't check for individual OA strip perms here.
+      // Don't force strip origin attributes.
+      GetKeyForOrigin(entry.GetKey()->mOrigin, false, false, permissionKey);
+
+      // If the keys don't match, and we aren't getting the default "" key, then
+      // we can exit early. We have to keep looking if we're getting the default
+      // key, as we may see a preload permission which should be transmitted.
+      if (aKey != permissionKey && !aKey.IsEmpty()) {
+        continue;
+      }
+    } else if (aOrigin != entry.GetKey()->mOrigin) {
+      // If the origins don't match, then we can exit early. We have to keep
+      // looking if we're getting the default origin, as we may see a preload
+      // permission which should be transmitted.
+      continue;
+    }
+
+    for (const auto& permEntry : entry.GetPermissions()) {
+      // Given how "default" permissions work and the possibility of them
+      // being overridden with UNKNOWN_ACTION, we might see this value here -
+      // but we do not want to send it to the content process.
+      if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
+        continue;
+      }
+
+      bool isPreload = IsPreloadPermission(mTypeArray[permEntry.mType]);
+      bool shouldAppend;
+      if (aOrigin.IsEmpty()) {
+        shouldAppend = (isPreload && aKey.IsEmpty()) ||
+                       (!isPreload && aKey == permissionKey);
+      } else {
+        shouldAppend = (!isPreload && aOrigin == entry.GetKey()->mOrigin);
+      }
+      if (shouldAppend) {
+        aPerms.AppendElement(
+            IPC::Permission(entry.GetKey()->mOrigin,
+                            mTypeArray[permEntry.mType], permEntry.mPermission,
+                            permEntry.mExpireType, permEntry.mExpireTime));
+      }
+    }
+  }
+
+  return true;
+}
+
+void PermissionManager::SetPermissionsWithKey(
+    const nsACString& aPermissionKey, nsTArray<IPC::Permission>& aPerms) {
+  if (NS_WARN_IF(XRE_IsParentProcess())) {
+    return;
+  }
+
+  RefPtr<GenericNonExclusivePromise::Private> promise;
+  bool foundKey =
+      mPermissionKeyPromiseMap.Get(aPermissionKey, getter_AddRefs(promise));
+  if (promise) {
+    MOZ_ASSERT(foundKey);
+    // NOTE: This will resolve asynchronously, so we can mark it as resolved
+    // now, and be confident that we will have filled in the database before any
+    // callbacks run.
+    promise->Resolve(true, __func__);
+  } else if (foundKey) {
+    // NOTE: We shouldn't be sent two InitializePermissionsWithKey for the same
+    // key, but it's possible.
+    return;
+  }
+  mPermissionKeyPromiseMap.InsertOrUpdate(
+      aPermissionKey, RefPtr<GenericNonExclusivePromise::Private>{});
+
+  // Add the permissions locally to our process
+  for (IPC::Permission& perm : aPerms) {
+    nsCOMPtr<nsIPrincipal> principal;
+    nsresult rv =
+        GetPrincipalFromOrigin(perm.origin, IsOAForceStripPermission(perm.type),
+                               getter_AddRefs(principal));
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      continue;
+    }
+
+#ifdef DEBUG
+    nsAutoCString permissionKey;
+    GetKeyForPermission(principal, perm.type, permissionKey);
+    MOZ_ASSERT(permissionKey == aPermissionKey,
+               "The permission keys which were sent over should match!");
+#endif
+
+    // The child process doesn't care about modification times - it neither
+    // reads nor writes, nor removes them based on the date - so 0 (which
+    // will end up as now()) is fine.
+    uint64_t modificationTime = 0;
+    AddInternal(principal, perm.type, perm.capability, 0, perm.expireType,
+                perm.expireTime, modificationTime, eNotify, eNoDBOperation,
+                true /* ignoreSessionPermissions */);
+  }
+}
+
+/* static */
+nsresult PermissionManager::GetKeyForOrigin(const nsACString& aOrigin,
+                                            bool aForceStripOA,
+                                            bool aSiteScopePermissions,
+                                            nsACString& aKey) {
+  aKey.Truncate();
+
+  // We only key origins for http, https, and ftp URIs. All origins begin with
+  // the URL which they apply to, which means that they should begin with their
+  // scheme in the case where they are one of these interesting URIs. We don't
+  // want to actually parse the URL here however, because this can be called on
+  // hot paths.
+  if (!StringBeginsWith(aOrigin, "http:"_ns) &&
+      !StringBeginsWith(aOrigin, "https:"_ns) &&
+      !StringBeginsWith(aOrigin, "ftp:"_ns)) {
+    return NS_OK;
+  }
+
+  // We need to look at the originAttributes if they are present, to make sure
+  // to remove any which we don't want. We put the rest of the origin, not
+  // including the attributes, into the key.
+  OriginAttributes attrs;
+  if (!attrs.PopulateFromOrigin(aOrigin, aKey)) {
+    aKey.Truncate();
+    return NS_OK;
+  }
+
+  MaybeStripOriginAttributes(aForceStripOA, attrs);
+
+#ifdef DEBUG
+  // Parse the origin string into a principal, and extract some useful
+  // information from it for assertions.
+  nsCOMPtr<nsIPrincipal> dbgPrincipal;
+  MOZ_ALWAYS_SUCCEEDS(GetPrincipalFromOrigin(aOrigin, aForceStripOA,
+                                             getter_AddRefs(dbgPrincipal)));
+  MOZ_ASSERT(dbgPrincipal->SchemeIs("http") ||
+             dbgPrincipal->SchemeIs("https") || dbgPrincipal->SchemeIs("ftp"));
+  MOZ_ASSERT(dbgPrincipal->OriginAttributesRef() == attrs);
+#endif
+
+  // If it is needed, turn the origin into its site-origin
+  if (aSiteScopePermissions) {
+    nsCOMPtr<nsIURI> uri;
+    nsresult rv = NS_NewURI(getter_AddRefs(uri), aKey);
+    if (!NS_WARN_IF(NS_FAILED(rv))) {
+      nsCString site;
+      rv = nsEffectiveTLDService::GetInstance()->GetSite(uri, site);
+      if (!NS_WARN_IF(NS_FAILED(rv))) {
+        aKey = site;
+      }
+    }
+  }
+
+  // Append the stripped suffix to the output origin key.
+  nsAutoCString suffix;
+  attrs.CreateSuffix(suffix);
+  aKey.Append(suffix);
+
+  return NS_OK;
+}
+
+/* static */
+nsresult PermissionManager::GetKeyForPrincipal(nsIPrincipal* aPrincipal,
+                                               bool aForceStripOA,
+                                               bool aSiteScopePermissions,
+                                               nsACString& aKey) {
+  nsAutoCString origin;
+  nsresult rv = aPrincipal->GetOrigin(origin);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aKey.Truncate();
+    return rv;
+  }
+  return GetKeyForOrigin(origin, aForceStripOA, aSiteScopePermissions, aKey);
+}
+
+/* static */
+nsresult PermissionManager::GetKeyForPermission(nsIPrincipal* aPrincipal,
+                                                const nsACString& aType,
+                                                nsACString& aKey) {
+  // Preload permissions have the "" key.
+  if (IsPreloadPermission(aType)) {
+    aKey.Truncate();
+    return NS_OK;
+  }
+
+  return GetKeyForPrincipal(aPrincipal, IsOAForceStripPermission(aType),
+                            IsSiteScopedPermission(aType), aKey);
+}
+
+/* static */
+nsTArray<std::pair<nsCString, nsCString>>
+PermissionManager::GetAllKeysForPrincipal(nsIPrincipal* aPrincipal) {
+  MOZ_ASSERT(aPrincipal);
+
+  nsTArray<std::pair<nsCString, nsCString>> pairs;
+  nsCOMPtr<nsIPrincipal> prin = aPrincipal;
+  while (prin) {
+    // Add the pair to the list
+    std::pair<nsCString, nsCString>* pair =
+        pairs.AppendElement(std::make_pair(""_ns, ""_ns));
+    // We can't check for individual OA strip perms here.
+    // Don't force strip origin attributes.
+    GetKeyForPrincipal(prin, false, false, pair->first);
+
+    // On origins with a derived key set to an empty string
+    // (basically any non-web URI scheme), we want to make sure
+    // to return earlier, and leave [("", "")] as the resulting
+    // pairs (but still run the same debug assertions near the
+    // end of this method).
+    if (pair->first.IsEmpty()) {
+      break;
+    }
+
+    Unused << GetOriginFromPrincipal(prin, false, pair->second);
+    prin = prin->GetNextSubDomainPrincipal();
+    // Get the next subdomain principal and loop back around.
+  }
+
+  MOZ_ASSERT(pairs.Length() >= 1,
+             "Every principal should have at least one pair item.");
+  return pairs;
+}
+
+bool PermissionManager::PermissionAvailable(nsIPrincipal* aPrincipal,
+                                            const nsACString& aType) {
+  EnsureReadCompleted();
+
+  if (XRE_IsContentProcess()) {
+    nsAutoCString permissionKey;
+    // NOTE: GetKeyForPermission accepts a null aType.
+    GetKeyForPermission(aPrincipal, aType, permissionKey);
+
+    // If we have a pending promise for the permission key in question, we don't
+    // have the permission available, so report a warning and return false.
+    RefPtr<GenericNonExclusivePromise::Private> promise;
+    if (!mPermissionKeyPromiseMap.Get(permissionKey, getter_AddRefs(promise)) ||
+        promise) {
+      // Emit a useful diagnostic warning with the permissionKey for the process
+      // which hasn't received permissions yet.
+      NS_WARNING(nsPrintfCString("This content process hasn't received the "
+                                 "permissions for %s yet",
+                                 permissionKey.get())
+                     .get());
+      return false;
+    }
+  }
+  return true;
+}
+
+void PermissionManager::WhenPermissionsAvailable(nsIPrincipal* aPrincipal,
+                                                 nsIRunnable* aRunnable) {
+  MOZ_ASSERT(aRunnable);
+
+  if (!XRE_IsContentProcess()) {
+    aRunnable->Run();
+    return;
+  }
+
+  nsTArray<RefPtr<GenericNonExclusivePromise>> promises;
+  for (auto& pair : GetAllKeysForPrincipal(aPrincipal)) {
+    RefPtr<GenericNonExclusivePromise::Private> promise;
+    if (!mPermissionKeyPromiseMap.Get(pair.first, getter_AddRefs(promise))) {
+      // In this case we have found a permission which isn't available in the
+      // content process and hasn't been requested yet. We need to create a new
+      // promise, and send the request to the parent (if we have not already
+      // done so).
+      promise = new GenericNonExclusivePromise::Private(__func__);
+      mPermissionKeyPromiseMap.InsertOrUpdate(pair.first, RefPtr{promise});
+    }
+
+    if (promise) {
+      promises.AppendElement(std::move(promise));
+    }
+  }
+
+  // If all of our permissions are available, immediately run the runnable. This
+  // avoids any extra overhead during fetch interception which is performance
+  // sensitive.
+  if (promises.IsEmpty()) {
+    aRunnable->Run();
+    return;
+  }
+
+  auto* thread = AbstractThread::MainThread();
+
+  RefPtr<nsIRunnable> runnable = aRunnable;
+  GenericNonExclusivePromise::All(thread, promises)
+      ->Then(
+          thread, __func__, [runnable]() { runnable->Run(); },
+          []() {
+            NS_WARNING(
+                "PermissionManager permission promise rejected. We're "
+                "probably shutting down.");
+          });
+}
+
+void PermissionManager::EnsureReadCompleted() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (mState == eInitializing) {
+    MonitorAutoLock lock(mMonitor);
+
+    while (mState == eInitializing) {
+      mMonitor.Wait();
+    }
+  }
+
+  switch (mState) {
+    case eInitializing:
+      MOZ_CRASH("This state is impossible!");
+
+    case eDBInitialized:
+      mState = eReady;
+
+      CompleteMigrations();
+      ImportLatestDefaults();
+      CompleteRead();
+
+      [[fallthrough]];
+
+    case eReady:
+      [[fallthrough]];
+
+    case eClosed:
+      return;
+
+    default:
+      MOZ_CRASH("Invalid state");
+  }
+}
+
+already_AddRefed<nsIInputStream> PermissionManager::GetDefaultsInputStream() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsAutoCString defaultsURL;
+  Preferences::GetCString(kDefaultsUrlPrefName, defaultsURL);
+  if (defaultsURL.IsEmpty()) {  // == Don't use built-in permissions.
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIURI> defaultsURI;
+  nsresult rv = NS_NewURI(getter_AddRefs(defaultsURI), defaultsURL);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  nsCOMPtr<nsIChannel> channel;
+  rv = NS_NewChannel(getter_AddRefs(channel), defaultsURI,
+                     nsContentUtils::GetSystemPrincipal(),
+                     nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
+                     nsIContentPolicy::TYPE_OTHER);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  nsCOMPtr<nsIInputStream> inputStream;
+  rv = channel->Open(getter_AddRefs(inputStream));
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  return inputStream.forget();
+}
+
+void PermissionManager::ConsumeDefaultsInputStream(
+    nsIInputStream* aInputStream, const MonitorAutoLock& aProofOfLock) {
+  MOZ_ASSERT(!NS_IsMainThread());
+
+  constexpr char kMatchTypeHost[] = "host";
+  constexpr char kMatchTypeOrigin[] = "origin";
+
+  mDefaultEntries.Clear();
+
+  if (!aInputStream) {
+    return;
+  }
+
+  nsresult rv;
+
+  /* format is:
+   * matchtype \t type \t permission \t host
+   * Only "host" is supported for matchtype
+   * type is a string that identifies the type of permission (e.g. "cookie")
+   * permission is an integer between 1 and 15
+   */
+
+  // Ideally we'd do this with nsILineInputString, but this is called with an
+  // nsIInputStream that comes from a resource:// URI, which doesn't support
+  // that interface.  So NS_ReadLine to the rescue...
+  nsLineBuffer<char> lineBuffer;
+  nsCString line;
+  bool isMore = true;
+  do {
+    rv = NS_ReadLine(aInputStream, &lineBuffer, line, &isMore);
+    NS_ENSURE_SUCCESS_VOID(rv);
+
+    if (line.IsEmpty() || line.First() == '#') {
+      continue;
+    }
+
+    nsTArray<nsCString> lineArray;
+
+    // Split the line at tabs
+    ParseString(line, '\t', lineArray);
+
+    if (lineArray.Length() != 4) {
+      continue;
+    }
+
+    nsresult error = NS_OK;
+    uint32_t permission = lineArray[2].ToInteger(&error);
+    if (NS_FAILED(error)) {
+      continue;
+    }
+
+    DefaultEntry::Op op;
+
+    if (lineArray[0].EqualsLiteral(kMatchTypeHost)) {
+      op = DefaultEntry::eImportMatchTypeHost;
+    } else if (lineArray[0].EqualsLiteral(kMatchTypeOrigin)) {
+      op = DefaultEntry::eImportMatchTypeOrigin;
+    } else {
+      continue;
+    }
+
+    DefaultEntry* entry = mDefaultEntries.AppendElement();
+    MOZ_ASSERT(entry);
+
+    entry->mOp = op;
+    entry->mPermission = permission;
+    entry->mHostOrOrigin = lineArray[3];
+    entry->mType = lineArray[1];
+  } while (isMore);
+}
+
+// ImportLatestDefaults will import the latest default cookies read during the
+// last DB initialization.
+nsresult PermissionManager::ImportLatestDefaults() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mState == eReady);
+
+  nsresult rv;
+
+  MonitorAutoLock lock(mMonitor);
+
+  for (const DefaultEntry& entry : mDefaultEntries) {
+    if (entry.mOp == DefaultEntry::eImportMatchTypeHost) {
+      // the import file format doesn't handle modification times, so we use
+      // 0, which AddInternal will convert to now()
+      int64_t modificationTime = 0;
+
+      rv = UpgradeHostToOriginAndInsert(
+          entry.mHostOrOrigin, entry.mType, entry.mPermission,
+          nsIPermissionManager::EXPIRE_NEVER, 0, modificationTime, false,
+          [&](const nsACString& aOrigin, const nsCString& aType,
+              uint32_t aPermission, uint32_t aExpireType, int64_t aExpireTime,
+              int64_t aModificationTime) {
+            nsCOMPtr<nsIPrincipal> principal;
+            nsresult rv =
+                GetPrincipalFromOrigin(aOrigin, IsOAForceStripPermission(aType),
+                                       getter_AddRefs(principal));
+            NS_ENSURE_SUCCESS(rv, rv);
+            rv =
+                AddInternal(principal, aType, aPermission,
+                            cIDPermissionIsDefault, aExpireType, aExpireTime,
+                            aModificationTime, PermissionManager::eDontNotify,
+                            PermissionManager::eNoDBOperation, false, &aOrigin);
+            NS_ENSURE_SUCCESS(rv, rv);
+
+            if (StaticPrefs::permissions_isolateBy_privateBrowsing()) {
+              // Also import the permission for private browsing.
+              OriginAttributes attrs =
+                  OriginAttributes(principal->OriginAttributesRef());
+              attrs.mPrivateBrowsingId = 1;
+              nsCOMPtr<nsIPrincipal> pbPrincipal =
+                  BasePrincipal::Cast(principal)->CloneForcingOriginAttributes(
+                      attrs);
+
+              rv = AddInternal(
+                  pbPrincipal, aType, aPermission, cIDPermissionIsDefault,
+                  aExpireType, aExpireTime, aModificationTime,
+                  PermissionManager::eDontNotify,
+                  PermissionManager::eNoDBOperation, false, &aOrigin);
+              NS_ENSURE_SUCCESS(rv, rv);
+            }
+
+            return NS_OK;
+          });
+
+      if (NS_FAILED(rv)) {
+        NS_WARNING("There was a problem importing a host permission");
+      }
+      continue;
+    }
+
+    MOZ_ASSERT(entry.mOp == DefaultEntry::eImportMatchTypeOrigin);
+
+    nsCOMPtr<nsIPrincipal> principal;
+    rv = GetPrincipalFromOrigin(entry.mHostOrOrigin,
+                                IsOAForceStripPermission(entry.mType),
+                                getter_AddRefs(principal));
+    if (NS_FAILED(rv)) {
+      NS_WARNING("Couldn't import an origin permission - malformed origin");
+      continue;
+    }
+
+    // the import file format doesn't handle modification times, so we use
+    // 0, which AddInternal will convert to now()
+    int64_t modificationTime = 0;
+
+    rv = AddInternal(principal, entry.mType, entry.mPermission,
+                     cIDPermissionIsDefault, nsIPermissionManager::EXPIRE_NEVER,
+                     0, modificationTime, eDontNotify, eNoDBOperation);
+    if (NS_FAILED(rv)) {
+      NS_WARNING("There was a problem importing an origin permission");
+    }
+
+    if (StaticPrefs::permissions_isolateBy_privateBrowsing()) {
+      // Also import the permission for private browsing.
+      OriginAttributes attrs =
+          OriginAttributes(principal->OriginAttributesRef());
+      attrs.mPrivateBrowsingId = 1;
+      nsCOMPtr<nsIPrincipal> pbPrincipal =
+          BasePrincipal::Cast(principal)->CloneForcingOriginAttributes(attrs);
+      // May return nullptr if clone fails.
+      NS_ENSURE_TRUE(pbPrincipal, NS_ERROR_FAILURE);
+
+      rv = AddInternal(pbPrincipal, entry.mType, entry.mPermission,
+                       cIDPermissionIsDefault,
+                       nsIPermissionManager::EXPIRE_NEVER, 0, modificationTime,
+                       eDontNotify, eNoDBOperation);
+      if (NS_FAILED(rv)) {
+        NS_WARNING(
+            "There was a problem importing an origin permission for private "
+            "browsing");
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+/**
+ * Perform the early steps of a permission check and determine whether we need
+ * to call CommonTestPermissionInternal() for the actual permission check.
+ *
+ * @param aPrincipal optional principal argument to check the permission for,
+ *                   can be nullptr if we aren't performing a principal-based
+ *                   check.
+ * @param aTypeIndex if the caller isn't sure what the index of the permission
+ *                   type to check for is in the mTypeArray member variable,
+ *                   it should pass -1, otherwise this would be the index of
+ *                   the type inside mTypeArray.  This would only be something
+ *                   other than -1 in recursive invocations of this function.
+ * @param aType      the permission type to test.
+ * @param aPermission out argument which will be a permission type that we
+ *                    will return from this function once the function is
+ *                    done.
+ * @param aDefaultPermission the default permission to be used if we can't
+ *                           determine the result of the permission check.
+ * @param aDefaultPermissionIsValid whether the previous argument contains a
+ *                                  valid value.
+ * @param aExactHostMatch whether to look for the exact host name or also for
+ *                        subdomains that can have the same permission.
+ * @param aIncludingSession whether to include session permissions when
+ *                          testing for the permission.
+ */
+PermissionManager::TestPreparationResult
+PermissionManager::CommonPrepareToTestPermission(
+    nsIPrincipal* aPrincipal, int32_t aTypeIndex, const nsACString& aType,
+    uint32_t* aPermission, uint32_t aDefaultPermission,
+    bool aDefaultPermissionIsValid, bool aExactHostMatch,
+    bool aIncludingSession) {
+  auto* basePrin = BasePrincipal::Cast(aPrincipal);
+  if (basePrin && basePrin->IsSystemPrincipal()) {
+    *aPermission = ALLOW_ACTION;
+    return AsVariant(NS_OK);
+  }
+
+  EnsureReadCompleted();
+
+  // For some permissions, query the default from a pref. We want to avoid
+  // doing this for all permissions so that permissions can opt into having
+  // the pref lookup overhead on each call.
+  int32_t defaultPermission =
+      aDefaultPermissionIsValid ? aDefaultPermission : UNKNOWN_ACTION;
+  if (!aDefaultPermissionIsValid && HasDefaultPref(aType)) {
+    Unused << mDefaultPrefBranch->GetIntPref(PromiseFlatCString(aType).get(),
+                                             &defaultPermission);
+  }
+
+  // Set the default.
+  *aPermission = defaultPermission;
+
+  int32_t typeIndex =
+      aTypeIndex == -1 ? GetTypeIndex(aType, false) : aTypeIndex;
+
+  // For expanded principals, we want to iterate over the allowlist and see
+  // if the permission is granted for any of them.
+  if (basePrin && basePrin->Is<ExpandedPrincipal>()) {
+    auto ep = basePrin->As<ExpandedPrincipal>();
+    for (auto& prin : ep->AllowList()) {
+      uint32_t perm;
+      nsresult rv =
+          CommonTestPermission(prin, typeIndex, aType, &perm, defaultPermission,
+                               true, aExactHostMatch, aIncludingSession);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return AsVariant(rv);
+      }
+
+      if (perm == nsIPermissionManager::ALLOW_ACTION) {
+        *aPermission = perm;
+        return AsVariant(NS_OK);
+      }
+      if (perm == nsIPermissionManager::PROMPT_ACTION) {
+        // Store it, but keep going to see if we can do better.
+        *aPermission = perm;
+      }
+    }
+
+    return AsVariant(NS_OK);
+  }
+
+  // If type == -1, the type isn't known, just signal that we are done.
+  if (typeIndex == -1) {
+    return AsVariant(NS_OK);
+  }
+
+  return AsVariant(typeIndex);
+}
+
+// If aTypeIndex is passed -1, we try to inder the type index from aType.
+nsresult PermissionManager::CommonTestPermission(
+    nsIPrincipal* aPrincipal, int32_t aTypeIndex, const nsACString& aType,
+    uint32_t* aPermission, uint32_t aDefaultPermission,
+    bool aDefaultPermissionIsValid, bool aExactHostMatch,
+    bool aIncludingSession) {
+  auto preparationResult = CommonPrepareToTestPermission(
+      aPrincipal, aTypeIndex, aType, aPermission, aDefaultPermission,
+      aDefaultPermissionIsValid, aExactHostMatch, aIncludingSession);
+  if (preparationResult.is<nsresult>()) {
+    return preparationResult.as<nsresult>();
+  }
+
+  return CommonTestPermissionInternal(
+      aPrincipal, nullptr, nullptr, preparationResult.as<int32_t>(), aType,
+      aPermission, aExactHostMatch, aIncludingSession);
+}
+
+// If aTypeIndex is passed -1, we try to inder the type index from aType.
+nsresult PermissionManager::CommonTestPermission(
+    nsIURI* aURI, int32_t aTypeIndex, const nsACString& aType,
+    uint32_t* aPermission, uint32_t aDefaultPermission,
+    bool aDefaultPermissionIsValid, bool aExactHostMatch,
+    bool aIncludingSession) {
+  auto preparationResult = CommonPrepareToTestPermission(
+      nullptr, aTypeIndex, aType, aPermission, aDefaultPermission,
+      aDefaultPermissionIsValid, aExactHostMatch, aIncludingSession);
+  if (preparationResult.is<nsresult>()) {
+    return preparationResult.as<nsresult>();
+  }
+
+  return CommonTestPermissionInternal(
+      nullptr, aURI, nullptr, preparationResult.as<int32_t>(), aType,
+      aPermission, aExactHostMatch, aIncludingSession);
+}
+
+nsresult PermissionManager::CommonTestPermission(
+    nsIURI* aURI, const OriginAttributes* aOriginAttributes, int32_t aTypeIndex,
+    const nsACString& aType, uint32_t* aPermission, uint32_t aDefaultPermission,
+    bool aDefaultPermissionIsValid, bool aExactHostMatch,
+    bool aIncludingSession) {
+  auto preparationResult = CommonPrepareToTestPermission(
+      nullptr, aTypeIndex, aType, aPermission, aDefaultPermission,
+      aDefaultPermissionIsValid, aExactHostMatch, aIncludingSession);
+  if (preparationResult.is<nsresult>()) {
+    return preparationResult.as<nsresult>();
+  }
+
+  return CommonTestPermissionInternal(
+      nullptr, aURI, aOriginAttributes, preparationResult.as<int32_t>(), aType,
+      aPermission, aExactHostMatch, aIncludingSession);
+}
+
+nsresult PermissionManager::TestPermissionWithoutDefaultsFromPrincipal(
+    nsIPrincipal* aPrincipal, const nsACString& aType, uint32_t* aPermission) {
+  MOZ_ASSERT(!HasDefaultPref(aType));
+
+  return CommonTestPermission(aPrincipal, -1, aType, aPermission,
+                              nsIPermissionManager::UNKNOWN_ACTION, true, false,
+                              true);
+}
+
+void PermissionManager::MaybeCompleteShutdown() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIAsyncShutdownClient> asc = GetAsyncShutdownBarrier();
+  MOZ_ASSERT(asc);
+
+  DebugOnly<nsresult> rv = asc->RemoveBlocker(this);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+}
+
+// Async shutdown blocker methods
+
+NS_IMETHODIMP PermissionManager::GetName(nsAString& aName) {
+  aName = u"PermissionManager: Flushing data"_ns;
+  return NS_OK;
+}
+
+NS_IMETHODIMP PermissionManager::BlockShutdown(
+    nsIAsyncShutdownClient* aClient) {
+  RemoveIdleDailyMaintenanceJob();
+  RemoveAllFromMemory();
+  CloseDB(eShutdown);
+
+  gPermissionManager = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PermissionManager::GetState(nsIPropertyBag** aBagOut) {
+  nsCOMPtr<nsIWritablePropertyBag2> propertyBag =
+      do_CreateInstance("@mozilla.org/hash-property-bag;1");
+
+  nsresult rv = propertyBag->SetPropertyAsInt32(u"state"_ns, mState);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  propertyBag.forget(aBagOut);
+
+  return NS_OK;
+}
+
+nsCOMPtr<nsIAsyncShutdownClient> PermissionManager::GetAsyncShutdownBarrier()
+    const {
+  nsresult rv;
+  nsCOMPtr<nsIAsyncShutdownService> svc =
+      do_GetService("@mozilla.org/async-shutdown-service;1", &rv);
+  if (NS_FAILED(rv)) {
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIAsyncShutdownClient> client;
+  // This feels very late but there seem to be other services that rely on
+  // us later than "profile-before-change".
+  rv = svc->GetXpcomWillShutdown(getter_AddRefs(client));
+  MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
+
+  return client;
+}
+
+void PermissionManager::MaybeStripOriginAttributes(
+    bool aForceStrip, OriginAttributes& aOriginAttributes) {
+  uint32_t flags = 0;
+
+  if (aForceStrip || !StaticPrefs::permissions_isolateBy_privateBrowsing()) {
+    flags |= OriginAttributes::STRIP_PRIVATE_BROWSING_ID;
+  }
+
+  if (aForceStrip || !StaticPrefs::permissions_isolateBy_userContext()) {
+    flags |= OriginAttributes::STRIP_USER_CONTEXT_ID;
+  }
+
+  if (flags != 0) {
+    aOriginAttributes.StripAttributes(flags);
+  }
+}
+
+}  // namespace mozilla
diff --git a/extensions/permissions/PermissionManager.h b/extensions/permissions/PermissionManager.h
new file mode 100644
index 0000000000..a92d583e49
--- /dev/null
+++ b/extensions/permissions/PermissionManager.h
@@ -0,0 +1,682 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_PermissionManager_h
+#define mozilla_PermissionManager_h
+
+#include "nsIPermissionManager.h"
+#include "nsIAsyncShutdown.h"
+#include "nsIObserver.h"
+#include "nsWeakReference.h"
+#include "nsCOMPtr.h"
+#include "nsIURI.h"
+#include "nsTHashtable.h"
+#include "nsTArray.h"
+#include "nsString.h"
+#include "nsHashKeys.h"
+#include "nsRefPtrHashtable.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/MozPromise.h"
+#include "mozilla/OriginAttributes.h"
+#include "mozilla/StaticMutex.h"
+#include "mozilla/ThreadBound.h"
+#include "mozilla/Variant.h"
+#include "mozilla/Vector.h"
+
+#include <utility>
+
+class mozIStorageConnection;
+class mozIStorageStatement;
+class nsIInputStream;
+class nsIPermission;
+class nsIPrefBranch;
+
+namespace IPC {
+struct Permission;
+}
+
+namespace mozilla {
+class OriginAttributesPattern;
+
+namespace dom {
+class ContentChild;
+}  // namespace dom
+
+////////////////////////////////////////////////////////////////////////////////
+
+class PermissionManager final : public nsIPermissionManager,
+                                public nsIObserver,
+                                public nsSupportsWeakReference,
+                                public nsIAsyncShutdownBlocker {
+  friend class dom::ContentChild;
+
+ public:
+  class PermissionEntry {
+   public:
+    PermissionEntry(int64_t aID, uint32_t aType, uint32_t aPermission,
+                    uint32_t aExpireType, int64_t aExpireTime,
+                    int64_t aModificationTime)
+        : mID(aID),
+          mExpireTime(aExpireTime),
+          mModificationTime(aModificationTime),
+          mType(aType),
+          mPermission(aPermission),
+          mExpireType(aExpireType),
+          mNonSessionPermission(aPermission),
+          mNonSessionExpireType(aExpireType),
+          mNonSessionExpireTime(aExpireTime) {}
+
+    int64_t mID;
+    int64_t mExpireTime;
+    int64_t mModificationTime;
+    uint32_t mType;
+    uint32_t mPermission;
+    uint32_t mExpireType;
+    uint32_t mNonSessionPermission;
+    uint32_t mNonSessionExpireType;
+    uint32_t mNonSessionExpireTime;
+  };
+
+  /**
+   * PermissionKey is the key used by PermissionHashKey hash table.
+   */
+  class PermissionKey {
+   public:
+    static PermissionKey* CreateFromPrincipal(nsIPrincipal* aPrincipal,
+                                              bool aForceStripOA,
+                                              bool aScopeToSite,
+                                              nsresult& aResult);
+    static PermissionKey* CreateFromURI(nsIURI* aURI, nsresult& aResult);
+    static PermissionKey* CreateFromURIAndOriginAttributes(
+        nsIURI* aURI, const OriginAttributes* aOriginAttributes,
+        bool aForceStripOA, nsresult& aResult);
+
+    explicit PermissionKey(const nsACString& aOrigin)
+        : mOrigin(aOrigin), mHashCode(HashString(aOrigin)) {}
+
+    bool operator==(const PermissionKey& aKey) const {
+      return mOrigin.Equals(aKey.mOrigin);
+    }
+
+    PLDHashNumber GetHashCode() const { return mHashCode; }
+
+    NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PermissionKey)
+
+    const nsCString mOrigin;
+    const PLDHashNumber mHashCode;
+
+   private:
+    // Default ctor shouldn't be used.
+    PermissionKey() = delete;
+
+    // Dtor shouldn't be used outside of the class.
+    ~PermissionKey(){};
+  };
+
+  class PermissionHashKey : public nsRefPtrHashKey<PermissionKey> {
+   public:
+    explicit PermissionHashKey(const PermissionKey* aPermissionKey)
+        : nsRefPtrHashKey<PermissionKey>(aPermissionKey) {}
+
+    PermissionHashKey(PermissionHashKey&& toCopy)
+        : nsRefPtrHashKey<PermissionKey>(std::move(toCopy)),
+          mPermissions(std::move(toCopy.mPermissions)) {}
+
+    bool KeyEquals(const PermissionKey* aKey) const {
+      return *aKey == *GetKey();
+    }
+
+    static PLDHashNumber HashKey(const PermissionKey* aKey) {
+      return aKey->GetHashCode();
+    }
+
+    // Force the hashtable to use the copy constructor when shuffling entries
+    // around, otherwise the Auto part of our AutoTArray won't be happy!
+    enum { ALLOW_MEMMOVE = false };
+
+    inline nsTArray<PermissionEntry>& GetPermissions() { return mPermissions; }
+    inline const nsTArray<PermissionEntry>& GetPermissions() const {
+      return mPermissions;
+    }
+
+    inline int32_t GetPermissionIndex(uint32_t aType) const {
+      for (uint32_t i = 0; i < mPermissions.Length(); ++i)
+        if (mPermissions[i].mType == aType) return i;
+
+      return -1;
+    }
+
+    inline PermissionEntry GetPermission(uint32_t aType) const {
+      for (uint32_t i = 0; i < mPermissions.Length(); ++i)
+        if (mPermissions[i].mType == aType) return mPermissions[i];
+
+      // unknown permission... return relevant data
+      return PermissionEntry(-1, aType, nsIPermissionManager::UNKNOWN_ACTION,
+                             nsIPermissionManager::EXPIRE_NEVER, 0, 0);
+    }
+
+   private:
+    AutoTArray<PermissionEntry, 1> mPermissions;
+  };
+
+  // nsISupports
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIPERMISSIONMANAGER
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSIASYNCSHUTDOWNBLOCKER
+
+  PermissionManager();
+  static already_AddRefed<nsIPermissionManager> GetXPCOMSingleton();
+  static PermissionManager* GetInstance();
+  nsresult Init();
+
+  // enums for AddInternal()
+  enum OperationType {
+    eOperationNone,
+    eOperationAdding,
+    eOperationRemoving,
+    eOperationChanging,
+    eOperationReplacingDefault
+  };
+
+  enum DBOperationType { eNoDBOperation, eWriteToDB };
+
+  enum NotifyOperationType { eDontNotify, eNotify };
+
+  // Similar to TestPermissionFromPrincipal, except that it is used only for
+  // permissions which can never have default values.
+  nsresult TestPermissionWithoutDefaultsFromPrincipal(nsIPrincipal* aPrincipal,
+                                                      const nsACString& aType,
+                                                      uint32_t* aPermission);
+
+  nsresult LegacyTestPermissionFromURI(
+      nsIURI* aURI, const OriginAttributes* aOriginAttributes,
+      const nsACString& aType, uint32_t* aPermission);
+
+  nsresult RemovePermissionsWithAttributes(OriginAttributesPattern& aAttrs);
+
+  /**
+   * See `nsIPermissionManager::GetPermissionsWithKey` for more info on
+   * permission keys.
+   *
+   * Get the permission key corresponding to the given Principal. This method is
+   * intentionally infallible, as we want to provide an permission key to every
+   * principal. Principals which don't have meaningful URIs with http://,
+   * https://, or ftp:// schemes are given the default "" Permission Key.
+   *
+   * @param aPrincipal  The Principal which the key is to be extracted from.
+   * @param aForceStripOA Whether to force stripping the principals origin
+   *        attributes prior to generating the key.
+   * @param aSiteScopePermissions  Whether to prepare the key for permissions
+   *        scoped to the Principal's site, rather than origin. These are looked
+   *        up independently. Scoping of a permission is fully determined by its
+   *        type and determined by calls to the function IsSiteScopedPermission.
+   * @param aKey  A string which will be filled with the permission
+   * key.
+   */
+  static nsresult GetKeyForPrincipal(nsIPrincipal* aPrincipal,
+                                     bool aForceStripOA,
+                                     bool aSiteScopePermissions,
+                                     nsACString& aKey);
+
+  /**
+   * See `nsIPermissionManager::GetPermissionsWithKey` for more info on
+   * permission keys.
+   *
+   * Get the permission key corresponding to the given Origin. This method is
+   * like GetKeyForPrincipal, except that it avoids creating a nsIPrincipal
+   * object when you already have access to an origin string.
+   *
+   * If this method is passed a nonsensical origin string it may produce a
+   * nonsensical permission key result.
+   *
+   * @param aOrigin  The origin which the key is to be extracted from.
+   * @param aForceStripOA Whether to force stripping the origins attributes
+   *        prior to generating the key.
+   * @param aSiteScopePermissions  Whether to prepare the key for permissions
+   *        scoped to the Principal's site, rather than origin. These are looked
+   *        up independently. Scoping of a permission is fully determined by its
+   *        type and determined by calls to the function IsSiteScopedPermission.
+   * @param aKey  A string which will be filled with the permission
+   * key.
+   */
+  static nsresult GetKeyForOrigin(const nsACString& aOrigin, bool aForceStripOA,
+                                  bool aSiteScopePermissions, nsACString& aKey);
+
+  /**
+   * See `nsIPermissionManager::GetPermissionsWithKey` for more info on
+   * permission keys.
+   *
+   * Get the permission key corresponding to the given Principal and type. This
+   * method is intentionally infallible, as we want to provide an permission key
+   * to every principal. Principals which don't have meaningful URIs with
+   * http://, https://, or ftp:// schemes are given the default "" Permission
+   * Key.
+   *
+   * This method is different from GetKeyForPrincipal in that it also takes
+   * permissions which must be sent down before loading a document into account.
+   *
+   * @param aPrincipal  The Principal which the key is to be extracted from.
+   * @param aType  The type of the permission to get the key for.
+   * @param aPermissionKey  A string which will be filled with the permission
+   * key.
+   */
+  static nsresult GetKeyForPermission(nsIPrincipal* aPrincipal,
+                                      const nsACString& aType,
+                                      nsACString& aKey);
+
+  /**
+   * See `nsIPermissionManager::GetPermissionsWithKey` for more info on
+   * permission keys.
+   *
+   * Get all permissions keys which could correspond to the given principal.
+   * This method, like GetKeyForPrincipal, is infallible and should always
+   * produce at least one (key, origin) pair.
+   *
+   * Unlike GetKeyForPrincipal, this method also gets the keys for base domains
+   * of the given principal. All keys returned by this method must be available
+   * in the content process for a given URL to successfully have its permissions
+   * checked in the `aExactHostMatch = false` situation.
+   *
+   * @param aPrincipal  The Principal which the key is to be extracted from.
+   * @return returns an array of (key, origin) pairs.
+   */
+  static nsTArray<std::pair<nsCString, nsCString>> GetAllKeysForPrincipal(
+      nsIPrincipal* aPrincipal);
+
+  // From ContentChild.
+  nsresult RemoveAllFromIPC();
+
+  /**
+   * Returns false if this permission manager wouldn't have the permission
+   * requested available.
+   *
+   * If aType is empty, checks that the permission manager would have all
+   * permissions available for the given principal.
+   */
+  bool PermissionAvailable(nsIPrincipal* aPrincipal, const nsACString& aType);
+
+  /**
+   * The content process doesn't have access to every permission. Instead, when
+   * LOAD_DOCUMENT_URI channels for http://, https://, and ftp:// URIs are
+   * opened, the permissions for those channels are sent down to the content
+   * process before the OnStartRequest message. Permissions for principals with
+   * other schemes are sent down at process startup.
+   *
+   * Permissions are keyed and grouped by "Permission Key"s.
+   * `PermissionManager::GetKeyForPrincipal` provides the mechanism for
+   * determining the permission key for a given principal.
+   *
+   * This method may only be called in the parent process. It fills the nsTArray
+   * argument with the IPC::Permission objects which have a matching origin.
+   *
+   * @param origin The origin to use to find the permissions of interest.
+   * @param key The key to use to find the permissions of interest. Only used
+   *            when the origin argument is empty.
+   * @param perms  An array which will be filled with the permissions which
+   *               match the given origin.
+   */
+  bool GetPermissionsFromOriginOrKey(const nsACString& aOrigin,
+                                     const nsACString& aKey,
+                                     nsTArray<IPC::Permission>& aPerms);
+
+  /**
+   * See `PermissionManager::GetPermissionsWithKey` for more info on
+   * Permission keys.
+   *
+   * `SetPermissionsWithKey` may only be called in the Child process, and
+   * initializes the permission manager with the permissions for a given
+   * Permission key. marking permissions with that key as available.
+   *
+   * @param permissionKey  The key for the permissions which have been sent
+   * over.
+   * @param perms  An array with the permissions which match the given key.
+   */
+  void SetPermissionsWithKey(const nsACString& aPermissionKey,
+                             nsTArray<IPC::Permission>& aPerms);
+
+  /**
+   * Add a callback which should be run when all permissions are available for
+   * the given nsIPrincipal. This method invokes the callback runnable
+   * synchronously when the permissions are already available. Otherwise the
+   * callback will be run asynchronously in SystemGroup when all permissions
+   * are available in the future.
+   *
+   * NOTE: This method will not request the permissions be sent by the parent
+   * process. This should only be used to wait for permissions which may not
+   * have arrived yet in order to ensure they are present.
+   *
+   * @param aPrincipal The principal to wait for permissions to be available
+   * for.
+   * @param aRunnable  The runnable to run when permissions are available for
+   * the given principal.
+   */
+  void WhenPermissionsAvailable(nsIPrincipal* aPrincipal,
+                                nsIRunnable* aRunnable);
+
+  /**
+   * Strip origin attributes for permissions, depending on permission isolation
+   * pref state.
+   * @param aForceStrip If true, strips user context and private browsing id,
+   * ignoring permission isolation prefs.
+   * @param aOriginAttributes object to strip.
+   */
+  static void MaybeStripOriginAttributes(bool aForceStrip,
+                                         OriginAttributes& aOriginAttributes);
+
+ private:
+  ~PermissionManager();
+  static StaticMutex sCreationMutex MOZ_UNANNOTATED;
+
+  /**
+   * Get all permissions for a given principal, which should not be isolated
+   * by user context or private browsing. The principal has its origin
+   * attributes stripped before perm db lookup. This is currently only affects
+   * the "cookie" permission.
+   * @param aPrincipal Used for creating the permission key.
+   * @param aSiteScopePermissions Used to specify whether to get strip perms for
+   * site scoped permissions (defined in IsSiteScopedPermission) or all other
+   * permissions. Also used to create the permission key.
+   */
+  nsresult GetStripPermsForPrincipal(nsIPrincipal* aPrincipal,
+                                     bool aSiteScopePermissions,
+                                     nsTArray<PermissionEntry>& aResult);
+
+  // Returns -1 on failure
+  int32_t GetTypeIndex(const nsACString& aType, bool aAdd);
+
+  // Returns whether the given combination of expire type and expire time are
+  // expired. Note that EXPIRE_SESSION only honors expireTime if it is nonzero.
+  bool HasExpired(uint32_t aExpireType, int64_t aExpireTime);
+
+  // Appends the permissions associated with this principal to aResult.
+  // If the onlySiteScopePermissions argument is true, the permissions searched
+  // are those for the site of the principal and only the permissions that are
+  // site-scoped are used.
+  nsresult GetAllForPrincipalHelper(nsIPrincipal* aPrincipal,
+                                    bool aSiteScopePermissions,
+                                    nsTArray<RefPtr<nsIPermission>>& aResult);
+
+  // Returns PermissionHashKey for a given { host, isInBrowserElement } tuple.
+  // This is not simply using PermissionKey because we will walk-up domains in
+  // case of |host| contains sub-domains. Returns null if nothing found. Also
+  // accepts host on the format "<foo>". This will perform an exact match lookup
+  // as the string doesn't contain any dots.
+  PermissionHashKey* GetPermissionHashKey(nsIPrincipal* aPrincipal,
+                                          uint32_t aType, bool aExactHostMatch);
+
+  // Returns PermissionHashKey for a given { host, isInBrowserElement } tuple.
+  // This is not simply using PermissionKey because we will walk-up domains in
+  // case of |host| contains sub-domains. Returns null if nothing found. Also
+  // accepts host on the format "<foo>". This will perform an exact match lookup
+  // as the string doesn't contain any dots.
+  PermissionHashKey* GetPermissionHashKey(
+      nsIURI* aURI, const OriginAttributes* aOriginAttributes, uint32_t aType,
+      bool aExactHostMatch);
+
+  // The int32_t is the type index, the nsresult is an early bail-out return
+  // code.
+  typedef Variant<int32_t, nsresult> TestPreparationResult;
+  TestPreparationResult CommonPrepareToTestPermission(
+      nsIPrincipal* aPrincipal, int32_t aTypeIndex, const nsACString& aType,
+      uint32_t* aPermission, uint32_t aDefaultPermission,
+      bool aDefaultPermissionIsValid, bool aExactHostMatch,
+      bool aIncludingSession);
+
+  // If aTypeIndex is passed -1, we try to inder the type index from aType.
+  nsresult CommonTestPermission(nsIPrincipal* aPrincipal, int32_t aTypeIndex,
+                                const nsACString& aType, uint32_t* aPermission,
+                                uint32_t aDefaultPermission,
+                                bool aDefaultPermissionIsValid,
+                                bool aExactHostMatch, bool aIncludingSession);
+
+  // If aTypeIndex is passed -1, we try to inder the type index from aType.
+  nsresult CommonTestPermission(nsIURI* aURI, int32_t aTypeIndex,
+                                const nsACString& aType, uint32_t* aPermission,
+                                uint32_t aDefaultPermission,
+                                bool aDefaultPermissionIsValid,
+                                bool aExactHostMatch, bool aIncludingSession);
+
+  nsresult CommonTestPermission(nsIURI* aURI,
+                                const OriginAttributes* aOriginAttributes,
+                                int32_t aTypeIndex, const nsACString& aType,
+                                uint32_t* aPermission,
+                                uint32_t aDefaultPermission,
+                                bool aDefaultPermissionIsValid,
+                                bool aExactHostMatch, bool aIncludingSession);
+
+  // Only one of aPrincipal or aURI is allowed to be passed in.
+  nsresult CommonTestPermissionInternal(
+      nsIPrincipal* aPrincipal, nsIURI* aURI,
+      const OriginAttributes* aOriginAttributes, int32_t aTypeIndex,
+      const nsACString& aType, uint32_t* aPermission, bool aExactHostMatch,
+      bool aIncludingSession);
+
+  nsresult OpenDatabase(nsIFile* permissionsFile);
+
+  void InitDB(bool aRemoveFile);
+  nsresult TryInitDB(bool aRemoveFile, nsIInputStream* aDefaultsInputStream);
+
+  void AddIdleDailyMaintenanceJob();
+  void RemoveIdleDailyMaintenanceJob();
+  void PerformIdleDailyMaintenance();
+
+  nsresult ImportLatestDefaults();
+  already_AddRefed<nsIInputStream> GetDefaultsInputStream();
+  void ConsumeDefaultsInputStream(nsIInputStream* aDefaultsInputStream,
+                                  const MonitorAutoLock& aProofOfLock);
+
+  nsresult CreateTable();
+  void NotifyObserversWithPermission(nsIPrincipal* aPrincipal,
+                                     const nsACString& aType,
+                                     uint32_t aPermission, uint32_t aExpireType,
+                                     int64_t aExpireTime,
+                                     int64_t aModificationTime,
+                                     const char16_t* aData);
+  void NotifyObservers(nsIPermission* aPermission, const char16_t* aData);
+
+  // Finalize all statements, close the DB and null it.
+  enum CloseDBNextOp {
+    eNone,
+    eRebuldOnSuccess,
+    eShutdown,
+  };
+  void CloseDB(CloseDBNextOp aNextOp);
+
+  nsresult RemoveAllInternal(bool aNotifyObservers);
+  nsresult RemoveAllFromMemory();
+
+  void UpdateDB(OperationType aOp, int64_t aID, const nsACString& aOrigin,
+                const nsACString& aType, uint32_t aPermission,
+                uint32_t aExpireType, int64_t aExpireTime,
+                int64_t aModificationTime);
+
+  /**
+   * This method removes all permissions modified after the specified time.
+   */
+  nsresult RemoveAllModifiedSince(int64_t aModificationTime);
+
+  template <class T>
+  nsresult RemovePermissionEntries(T aCondition);
+
+  template <class T>
+  nsresult GetPermissionEntries(T aCondition,
+                                nsTArray<RefPtr<nsIPermission>>& aResult);
+
+  // This method must be called before doing any operation to be sure that the
+  // DB reading has been completed. This method is also in charge to complete
+  // the migrations if needed.
+  void EnsureReadCompleted();
+
+  nsresult AddInternal(nsIPrincipal* aPrincipal, const nsACString& aType,
+                       uint32_t aPermission, int64_t aID, uint32_t aExpireType,
+                       int64_t aExpireTime, int64_t aModificationTime,
+                       NotifyOperationType aNotifyOperation,
+                       DBOperationType aDBOperation,
+                       const bool aIgnoreSessionPermissions = false,
+                       const nsACString* aOriginString = nullptr,
+                       const bool aAllowPersistInPrivateBrowsing = false);
+
+  void MaybeAddReadEntryFromMigration(const nsACString& aOrigin,
+                                      const nsCString& aType,
+                                      uint32_t aPermission,
+                                      uint32_t aExpireType, int64_t aExpireTime,
+                                      int64_t aModificationTime, int64_t aId);
+
+  nsCOMPtr<nsIAsyncShutdownClient> GetAsyncShutdownBarrier() const;
+
+  void MaybeCompleteShutdown();
+
+  nsRefPtrHashtable<nsCStringHashKey, GenericNonExclusivePromise::Private>
+      mPermissionKeyPromiseMap;
+
+  nsCOMPtr<nsIFile> mPermissionsFile;
+
+  // This monitor is used to ensure the database reading before any other
+  // operation. The reading of the database happens OMT. See |State| to know the
+  // steps of the database reading.
+  Monitor mMonitor MOZ_UNANNOTATED;
+
+  enum State {
+    // Initial state. The database has not been read yet.
+    // |TryInitDB| is called at startup time to read the database OMT.
+    // During the reading, |mReadEntries| will be populated with all the
+    // existing permissions.
+    eInitializing,
+
+    // At the end of the database reading, we are in this state. A runnable is
+    // executed to call |EnsureReadCompleted| on the main thread.
+    // |EnsureReadCompleted| processes |mReadEntries| and goes to the next
+    // state.
+    eDBInitialized,
+
+    // The permissions are fully read and any pending operation can proceed.
+    eReady,
+
+    // The permission manager has been terminated. No extra database operations
+    // will be allowed.
+    eClosed,
+  };
+  Atomic<State> mState;
+
+  // A single entry, from the database.
+  struct ReadEntry {
+    ReadEntry()
+        : mId(0),
+          mPermission(0),
+          mExpireType(0),
+          mExpireTime(0),
+          mModificationTime(0) {}
+
+    nsCString mOrigin;
+    nsCString mType;
+    int64_t mId;
+    uint32_t mPermission;
+    uint32_t mExpireType;
+    int64_t mExpireTime;
+    int64_t mModificationTime;
+
+    // true if this entry is the result of a migration.
+    bool mFromMigration;
+  };
+
+  // List of entries read from the database. It will be populated OMT and
+  // consumed on the main-thread.
+  // This array is protected by the monitor.
+  nsTArray<ReadEntry> mReadEntries;
+
+  // A single entry, from the database.
+  struct MigrationEntry {
+    MigrationEntry()
+        : mId(0),
+          mPermission(0),
+          mExpireType(0),
+          mExpireTime(0),
+          mModificationTime(0),
+          mIsInBrowserElement(false) {}
+
+    nsCString mHost;
+    nsCString mType;
+    int64_t mId;
+    uint32_t mPermission;
+    uint32_t mExpireType;
+    int64_t mExpireTime;
+    int64_t mModificationTime;
+
+    // Legacy, for migration.
+    bool mIsInBrowserElement;
+  };
+
+  // List of entries read from the database. It will be populated OMT and
+  // consumed on the main-thread. The migration entries will be converted to
+  // ReadEntry in |CompleteMigrations|.
+  // This array is protected by the monitor.
+  nsTArray<MigrationEntry> mMigrationEntries;
+
+  // A single entry from the defaults URL.
+  struct DefaultEntry {
+    DefaultEntry() : mOp(eImportMatchTypeHost), mPermission(0) {}
+
+    enum Op {
+      eImportMatchTypeHost,
+      eImportMatchTypeOrigin,
+    };
+
+    Op mOp;
+
+    nsCString mHostOrOrigin;
+    nsCString mType;
+    uint32_t mPermission;
+  };
+
+  // List of entries read from the default settings.
+  // This array is protected by the monitor.
+  nsTArray<DefaultEntry> mDefaultEntries;
+
+  nsresult Read(const MonitorAutoLock& aProofOfLock);
+  void CompleteRead();
+
+  void CompleteMigrations();
+
+  bool mMemoryOnlyDB;
+
+  nsTHashtable<PermissionHashKey> mPermissionTable;
+  // a unique, monotonically increasing id used to identify each database entry
+  int64_t mLargestID;
+
+  nsCOMPtr<nsIPrefBranch> mDefaultPrefBranch;
+
+  // NOTE: Ensure this is the last member since it has a large inline buffer.
+  // An array to store the strings identifying the different types.
+  Vector<nsCString, 512> mTypeArray;
+
+  nsCOMPtr<nsIThread> mThread;
+
+  struct ThreadBoundData {
+    nsCOMPtr<mozIStorageConnection> mDBConn;
+
+    nsCOMPtr<mozIStorageStatement> mStmtInsert;
+    nsCOMPtr<mozIStorageStatement> mStmtDelete;
+    nsCOMPtr<mozIStorageStatement> mStmtUpdate;
+  };
+  ThreadBound<ThreadBoundData> mThreadBoundData;
+
+  friend class DeleteFromMozHostListener;
+  friend class CloseDatabaseListener;
+};
+
+// {4F6B5E00-0C36-11d5-A535-0010A401EB10}
+#define NS_PERMISSIONMANAGER_CID                   \
+  {                                                \
+    0x4f6b5e00, 0xc36, 0x11d5, {                   \
+      0xa5, 0x35, 0x0, 0x10, 0xa4, 0x1, 0xeb, 0x10 \
+    }                                              \
+  }
+
+}  // namespace mozilla
+
+#endif  // mozilla_PermissionManager_h
diff --git a/extensions/permissions/components.conf b/extensions/permissions/components.conf
new file mode 100644
index 0000000000..62f4f7ba1c
--- /dev/null
+++ b/extensions/permissions/components.conf
@@ -0,0 +1,25 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Classes = [
+    {
+        'name': 'PermissionManager',
+        'js_name': 'perms',
+        'cid': '{4f6b5e00-0c36-11d5-a535-0010a401eb10}',
+        'contract_ids': ['@mozilla.org/permissionmanager;1'],
+        'interfaces': ['nsIPermissionManager'],
+        'singleton': True,
+        'type': 'nsIPermissionManager',
+        'constructor': 'mozilla::PermissionManager::GetXPCOMSingleton',
+        'headers': ['/extensions/permissions/PermissionManager.h'],
+    },
+    {
+        'cid': '{07611dc6-bf4d-4d8a-a64b-f3a5904dddc7}',
+        'contract_ids': ['@mozilla.org/permissiondelegatehandler;1'],
+        'type': 'PermissionDelegateHandler',
+        'headers': ['/extensions/permissions/PermissionDelegateHandler.h'],
+    },
+]
diff --git a/extensions/permissions/moz.build b/extensions/permissions/moz.build
new file mode 100644
index 0000000000..6cdac60926
--- /dev/null
+++ b/extensions/permissions/moz.build
@@ -0,0 +1,39 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ["test"]
+
+TESTING_JS_MODULES += [
+    "test/PermissionTestUtils.sys.mjs",
+]
+
+EXPORTS.mozilla += [
+    "Permission.h",
+    "PermissionDelegateHandler.h",
+    "PermissionDelegateIPCUtils.h",
+    "PermissionManager.h",
+]
+
+UNIFIED_SOURCES += [
+    "Permission.cpp",
+    "PermissionDelegateHandler.cpp",
+    "PermissionManager.cpp",
+]
+
+XPCOM_MANIFESTS += [
+    "components.conf",
+]
+
+LOCAL_INCLUDES += [
+    "/caps",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"
+
+with Files("**"):
+    BUG_COMPONENT = ("Core", "Permission Manager")
diff --git a/extensions/permissions/test/PermissionTestUtils.sys.mjs b/extensions/permissions/test/PermissionTestUtils.sys.mjs
new file mode 100644
index 0000000000..84601376ba
--- /dev/null
+++ b/extensions/permissions/test/PermissionTestUtils.sys.mjs
@@ -0,0 +1,111 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * Utility module for tests to access the PermissionManager
+ * with uri or origin string parameters.
+ */
+
+let pm = Services.perms;
+
+let secMan = Services.scriptSecurityManager;
+
+/**
+ * Convert origin string or uri to principal.
+ * If passed an nsIPrincipal it will be returned without conversion.
+ *
+ * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject - Subject to convert to principal
+ * @returns {Ci.nsIPrincipal} Principal created from subject
+ */
+function convertToPrincipal(subject) {
+  if (subject instanceof Ci.nsIPrincipal) {
+    return subject;
+  }
+  if (typeof subject === "string") {
+    return secMan.createContentPrincipalFromOrigin(subject);
+  }
+  if (subject === null || subject instanceof Ci.nsIURI) {
+    return secMan.createContentPrincipal(subject, {});
+  }
+  throw new Error(
+    "subject parameter must be an nsIURI an origin string or a principal."
+  );
+}
+
+export let PermissionTestUtils = {
+  /**
+   * Add permission information for a given subject.
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  add(subject, ...args) {
+    return pm.addFromPrincipal(convertToPrincipal(subject), ...args);
+  },
+  /**
+   * Get all custom permissions for a given subject.
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  getAll(subject, ...args) {
+    return pm.getAllForPrincipal(convertToPrincipal(subject), ...args);
+  },
+  /**
+   * Remove permission information for a given subject and permission type
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  remove(subject, ...args) {
+    return pm.removeFromPrincipal(convertToPrincipal(subject), ...args);
+  },
+  /**
+   * Test whether a website has permission to perform the given action.
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  testPermission(subject, ...args) {
+    return pm.testPermissionFromPrincipal(convertToPrincipal(subject), ...args);
+  },
+  /**
+   * Test whether a website has permission to perform the given action.
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  testExactPermission(subject, ...args) {
+    return pm.testExactPermissionFromPrincipal(
+      convertToPrincipal(subject),
+      ...args
+    );
+  },
+  /**
+   * Get the permission object associated with the given subject and action.
+   * Subject can be a principal, uri or origin string.
+   *
+   * @see nsIPermissionManager for documentation
+   *
+   * @param {Ci.nsIPrincipal|Ci.nsIURI|string} subject
+   * @param {*} args
+   */
+  getPermissionObject(subject, type, exactHost = false) {
+    return pm.getPermissionObject(convertToPrincipal(subject), type, exactHost);
+  },
+};
diff --git a/extensions/permissions/test/browser.ini b/extensions/permissions/test/browser.ini
new file mode 100644
index 0000000000..b71b10dfaf
--- /dev/null
+++ b/extensions/permissions/test/browser.ini
@@ -0,0 +1,8 @@
+[DEFAULT]
+
+[browser_permmgr_sync.js]
+# The browser_permmgr_sync test  runs code
+# paths which would hit the debug only assertion in
+# PermissionManager::PermissionKey::CreateFromPrincipal.
+skip-if = debug
+[browser_permmgr_viewsrc.js]
diff --git a/extensions/permissions/test/browser_permmgr_sync.js b/extensions/permissions/test/browser_permmgr_sync.js
new file mode 100644
index 0000000000..619c29842c
--- /dev/null
+++ b/extensions/permissions/test/browser_permmgr_sync.js
@@ -0,0 +1,448 @@
+function addPerm(aOrigin, aName) {
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(aOrigin);
+  Services.perms.addFromPrincipal(
+    principal,
+    aName,
+    Services.perms.ALLOW_ACTION
+  );
+}
+
+add_task(async function () {
+  // Make sure that we get a new process for the tab which we create. This is
+  // important, because we want to assert information about the initial state
+  // of the local permissions cache.
+
+  addPerm("http://example.com", "perm1");
+  addPerm("http://foo.bar.example.com", "perm2");
+  addPerm("about:home", "perm3");
+  addPerm("https://example.com", "perm4");
+  // NOTE: This permission is a preload permission, so it should be available in
+  // the content process from startup.
+  addPerm("https://somerandomwebsite.com", "cookie");
+
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: "about:blank", forceNewProcess: true },
+    async function (aBrowser) {
+      await SpecialPowers.spawn(aBrowser, [], async function () {
+        // Before the load http URIs shouldn't have been sent down yet
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "perm1"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm1-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "perm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm2-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "about:home"
+            ),
+            "perm3"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "perm3-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://example.com"
+            ),
+            "perm4"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm4-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://somerandomwebsite.com"
+            ),
+            "cookie"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "cookie-1"
+        );
+
+        let iframe = content.document.createElement("iframe");
+
+        // Perform a load of example.com
+        await new Promise(resolve => {
+          iframe.setAttribute("src", "http://example.com");
+          iframe.onload = resolve;
+          content.document.body.appendChild(iframe);
+        });
+
+        // After the load finishes, the iframe process should know about example.com, but not foo.bar.example.com
+        await content.SpecialPowers.spawn(iframe, [], async function () {
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "http://example.com"
+              ),
+              "perm1"
+            ),
+            Services.perms.ALLOW_ACTION,
+            "perm1-2"
+          );
+
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "http://foo.bar.example.com"
+              ),
+              "perm2"
+            ),
+            Services.perms.UNKNOWN_ACTION,
+            "perm2-2"
+          );
+
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "about:home"
+              ),
+              "perm3"
+            ),
+            Services.perms.ALLOW_ACTION,
+            "perm3-2"
+          );
+
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "https://example.com"
+              ),
+              "perm4"
+            ),
+            Services.perms.UNKNOWN_ACTION,
+            "perm4-2"
+          );
+
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "https://somerandomwebsite.com"
+              ),
+              "cookie"
+            ),
+            Services.perms.ALLOW_ACTION,
+            "cookie-2"
+          );
+        });
+
+        // In Fission only, the parent process should have no knowledge about the child
+        // process permissions
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "perm1"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "perm1-3"
+        );
+
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "perm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm2-3"
+        );
+
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://example.com"
+            ),
+            "perm4"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm4-3"
+        );
+      });
+
+      addPerm("http://example.com", "newperm1");
+      addPerm("http://foo.bar.example.com", "newperm2");
+      addPerm("about:home", "newperm3");
+      addPerm("https://example.com", "newperm4");
+      addPerm("https://someotherrandomwebsite.com", "cookie");
+
+      await SpecialPowers.spawn(aBrowser, [], async function () {
+        // The new permissions should be available, but only for
+        // http://example.com (without Fission), and about:home.
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "perm1"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "perm1-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "newperm1"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "newperm1-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "perm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm2-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "newperm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "newperm2-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "about:home"
+            ),
+            "perm3"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "perm3-3"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "about:home"
+            ),
+            "newperm3"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "newperm3-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://example.com"
+            ),
+            "perm4"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm4-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://example.com"
+            ),
+            "newperm4"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "newperm4-1"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://somerandomwebsite.com"
+            ),
+            "cookie"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "cookie-3"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://someotherrandomwebsite.com"
+            ),
+            "cookie"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "othercookie-3"
+        );
+
+        let iframe = content.document.createElement("iframe");
+        // Loading a subdomain now, on https
+        await new Promise(resolve => {
+          iframe.setAttribute("src", "https://sub1.test1.example.com");
+          iframe.onload = resolve;
+          content.document.body.appendChild(iframe);
+        });
+
+        // After the load finishes, the iframe process should not know about
+        // the permissions of its base domain.
+        await content.SpecialPowers.spawn(iframe, [], async function () {
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "https://example.com"
+              ),
+              "perm4"
+            ),
+            Services.perms.ALLOW_ACTION,
+            "perm4-5"
+          );
+
+          // In Fission not across schemes, though.
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "http://example.com"
+              ),
+              "perm1"
+            ),
+            SpecialPowers.useRemoteSubframes
+              ? Services.perms.UNKNOWN_ACTION
+              : Services.perms.ALLOW_ACTION,
+            "perm1-5"
+          );
+          is(
+            Services.perms.testPermissionFromPrincipal(
+              Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+                "http://example.com"
+              ),
+              "newperm1"
+            ),
+            SpecialPowers.useRemoteSubframes
+              ? Services.perms.UNKNOWN_ACTION
+              : Services.perms.ALLOW_ACTION,
+            "newperm1-2"
+          );
+        });
+
+        // The parent process should still have no permission under Fission.
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "perm1"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "perm1-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://example.com"
+            ),
+            "newperm1"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "newperm1-3"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://example.com"
+            ),
+            "perm4"
+          ),
+          SpecialPowers.useRemoteSubframes
+            ? Services.perms.UNKNOWN_ACTION
+            : Services.perms.ALLOW_ACTION,
+          "perm4-6"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "perm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "perm2-5"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "http://foo.bar.example.com"
+            ),
+            "newperm2"
+          ),
+          Services.perms.UNKNOWN_ACTION,
+          "newperm2-2"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "about:home"
+            ),
+            "perm3"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "perm3-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "about:home"
+            ),
+            "newperm3"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "newperm3-2"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://somerandomwebsite.com"
+            ),
+            "cookie"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "cookie-4"
+        );
+        is(
+          Services.perms.testPermissionFromPrincipal(
+            Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+              "https://someotherrandomwebsite.com"
+            ),
+            "cookie"
+          ),
+          Services.perms.ALLOW_ACTION,
+          "othercookie-4"
+        );
+      });
+    }
+  );
+});
diff --git a/extensions/permissions/test/browser_permmgr_viewsrc.js b/extensions/permissions/test/browser_permmgr_viewsrc.js
new file mode 100644
index 0000000000..64dcb0413c
--- /dev/null
+++ b/extensions/permissions/test/browser_permmgr_viewsrc.js
@@ -0,0 +1,28 @@
+add_task(async function () {
+  // Add a permission for example.com, start a new content process, and make
+  // sure that the permission has been sent down.
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "https://example.com"
+    );
+  Services.perms.addFromPrincipal(
+    principal,
+    "viewsourceTestingPerm",
+    Services.perms.ALLOW_ACTION
+  );
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "view-source:https://example.com",
+    /* waitForLoad */ true,
+    /* waitForStateStop */ false,
+    /* forceNewProcess */ true
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [principal], async function (p) {
+    is(
+      Services.perms.testPermissionFromPrincipal(p, "viewsourceTestingPerm"),
+      Services.perms.ALLOW_ACTION
+    );
+  });
+  BrowserTestUtils.removeTab(tab);
+});
diff --git a/extensions/permissions/test/gtest/PermissionManagerTest.cpp b/extensions/permissions/test/gtest/PermissionManagerTest.cpp
new file mode 100644
index 0000000000..b69a7d46f2
--- /dev/null
+++ b/extensions/permissions/test/gtest/PermissionManagerTest.cpp
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsNetUtil.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/OriginAttributes.h"
+#include "mozilla/PermissionManager.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/Unused.h"
+#include "gtest/gtest.h"
+#include "gtest/MozGTestBench.h"
+
+using namespace mozilla;
+
+class PermissionManagerTester : public ::testing::Test {
+ protected:
+  PermissionManagerTester()
+      : mNonExistentType("permissionTypeThatIsGuaranteedToNeverExist"_ns) {}
+  void SetUp() override {
+    mPermissionManager = PermissionManager::GetInstance();
+    nsCOMPtr<nsIURI> uri;
+    nsresult rv =
+        NS_NewURI(getter_AddRefs(uri),
+                  "https://test.origin.with.subdomains.example.com"_ns);
+    MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+    mPrincipal =
+        mozilla::BasePrincipal::CreateContentPrincipal(uri, OriginAttributes());
+  }
+
+  void TearDown() override {
+    mPermissionManager = nullptr;
+    mPrincipal = nullptr;
+  }
+
+  static const unsigned kNumIterations = 100000;
+
+  nsLiteralCString mNonExistentType;
+  RefPtr<PermissionManager> mPermissionManager;
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+};
+
+MOZ_GTEST_BENCH_F(PermissionManagerTester,
+                  TestNonExistentPermissionFromPrincipal, [this] {
+                    for (unsigned i = 0; i < kNumIterations; ++i) {
+                      uint32_t result = 0;
+                      Unused << mPermissionManager->TestPermissionFromPrincipal(
+                          mPrincipal, mNonExistentType, &result);
+                    }
+                  });
diff --git a/extensions/permissions/test/gtest/moz.build b/extensions/permissions/test/gtest/moz.build
new file mode 100644
index 0000000000..132c384597
--- /dev/null
+++ b/extensions/permissions/test/gtest/moz.build
@@ -0,0 +1,11 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+UNIFIED_SOURCES += [
+    "PermissionManagerTest.cpp",
+]
+
+FINAL_LIBRARY = "xul-gtest"
diff --git a/extensions/permissions/test/moz.build b/extensions/permissions/test/moz.build
new file mode 100644
index 0000000000..5c68459575
--- /dev/null
+++ b/extensions/permissions/test/moz.build
@@ -0,0 +1,15 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += [
+    "gtest",
+]
+
+XPCSHELL_TESTS_MANIFESTS += [
+    "unit/xpcshell.ini",
+]
+
+BROWSER_CHROME_MANIFESTS += ["browser.ini"]
diff --git a/extensions/permissions/test/unit/head.js b/extensions/permissions/test/unit/head.js
new file mode 100644
index 0000000000..b5b2518e22
--- /dev/null
+++ b/extensions/permissions/test/unit/head.js
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+var { NetUtil } = ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
+
+// Helper to step a generator function and catch a StopIteration exception.
+function do_run_generator(generator) {
+  try {
+    generator.next();
+  } catch (e) {
+    do_throw("caught exception " + e, Components.stack.caller);
+  }
+}
+
+// Helper to finish a generator function test.
+function do_finish_generator_test(generator) {
+  executeSoon(function () {
+    generator.return();
+    do_test_finished();
+  });
+}
+
+function do_count_array(all) {
+  return all.length;
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_cleardata.js b/extensions/permissions/test/unit/test_permmanager_cleardata.js
new file mode 100644
index 0000000000..2bd4d11319
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_cleardata.js
@@ -0,0 +1,93 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var pm;
+
+// Create a principal based on the { origin, originAttributes }.
+function createPrincipal(aOrigin, aOriginAttributes) {
+  return Services.scriptSecurityManager.createContentPrincipal(
+    NetUtil.newURI(aOrigin),
+    aOriginAttributes
+  );
+}
+
+function getData(aPattern) {
+  return JSON.stringify(aPattern);
+}
+
+// Use aEntries to create principals, add permissions to them and check that they have them.
+// Then, it is removing origin attributes with the given aData and check if the permissions
+// of principals[i] matches the permission in aResults[i].
+function test(aEntries, aData, aResults) {
+  let principals = [];
+
+  for (const entry of aEntries) {
+    principals.push(createPrincipal(entry.origin, entry.originAttributes));
+  }
+
+  for (const principal of principals) {
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principal, "test/clear-origin"),
+      pm.UNKNOWN_ACTION
+    );
+    pm.addFromPrincipal(
+      principal,
+      "test/clear-origin",
+      pm.ALLOW_ACTION,
+      pm.EXPIRE_NEVER,
+      0
+    );
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principal, "test/clear-origin"),
+      pm.ALLOW_ACTION
+    );
+  }
+
+  // `clear-origin-attributes-data` notification is removed from permission
+  // manager
+  pm.removePermissionsWithAttributes(aData);
+
+  var length = aEntries.length;
+  for (let i = 0; i < length; ++i) {
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principals[i], "test/clear-origin"),
+      aResults[i]
+    );
+
+    // Remove allowed actions.
+    if (aResults[i] == pm.ALLOW_ACTION) {
+      pm.removeFromPrincipal(principals[i], "test/clear-origin");
+    }
+  }
+}
+
+function run_test() {
+  do_get_profile();
+
+  pm = Services.perms;
+
+  let entries = [
+    { origin: "http://example.com", originAttributes: {} },
+    {
+      origin: "http://example.com",
+      originAttributes: { inIsolatedMozBrowser: true },
+    },
+  ];
+
+  // In that case, all permissions should be removed.
+  test(entries, getData({}), [
+    pm.UNKNOWN_ACTION,
+    pm.UNKNOWN_ACTION,
+    pm.ALLOW_ACTION,
+    pm.ALLOW_ACTION,
+  ]);
+
+  // In that case, only the permissions related to a browserElement should be removed.
+  // All the other permissions should stay.
+  test(entries, getData({ inIsolatedMozBrowser: true }), [
+    pm.ALLOW_ACTION,
+    pm.UNKNOWN_ACTION,
+    pm.ALLOW_ACTION,
+    pm.ALLOW_ACTION,
+  ]);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_default_pref.js b/extensions/permissions/test/unit/test_permmanager_default_pref.js
new file mode 100644
index 0000000000..3759594bf5
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_default_pref.js
@@ -0,0 +1,76 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "https://example.org"
+    );
+
+  // Check that without a pref the default return value is UNKNOWN.
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.UNKNOWN_ACTION
+  );
+
+  // Check that the default return value changed after setting the pref.
+  Services.prefs.setIntPref(
+    "permissions.default.camera",
+    Services.perms.DENY_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.DENY_ACTION
+  );
+
+  // Check that functions that do not directly return a permission value still
+  // consider the permission as being set to its default.
+  Assert.equal(
+    null,
+    Services.perms.getPermissionObject(principal, "camera", false)
+  );
+
+  // Check that other permissions still return UNKNOWN.
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "geo"),
+    Services.perms.UNKNOWN_ACTION
+  );
+
+  // Check that the default return value changed after changing the pref.
+  Services.prefs.setIntPref(
+    "permissions.default.camera",
+    Services.perms.ALLOW_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.ALLOW_ACTION
+  );
+
+  // Check that the preference is ignored if there is a value.
+  Services.perms.addFromPrincipal(
+    principal,
+    "camera",
+    Services.perms.DENY_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.DENY_ACTION
+  );
+  Assert.ok(
+    Services.perms.getPermissionObject(principal, "camera", false) != null
+  );
+
+  // The preference should be honored again, after resetting the permissions.
+  Services.perms.removeAll();
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.ALLOW_ACTION
+  );
+
+  // Should be UNKNOWN after clearing the pref.
+  Services.prefs.clearUserPref("permissions.default.camera");
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.UNKNOWN_ACTION
+  );
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_defaults.js b/extensions/permissions/test/unit/test_permmanager_defaults.js
new file mode 100644
index 0000000000..0f608e2151
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_defaults.js
@@ -0,0 +1,485 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// The origin we use in most of the tests.
+const TEST_ORIGIN = NetUtil.newURI("http://example.org");
+const TEST_ORIGIN_HTTPS = NetUtil.newURI("https://example.org");
+const TEST_ORIGIN_2 = NetUtil.newURI("http://example.com");
+const TEST_ORIGIN_3 = NetUtil.newURI("https://example2.com:8080");
+const TEST_PERMISSION = "test-permission";
+
+function promiseTimeout(delay) {
+  return new Promise(resolve => {
+    do_timeout(delay, resolve);
+  });
+}
+
+add_task(async function do_test() {
+  // setup a profile.
+  do_get_profile();
+
+  // create a file in the temp directory with the defaults.
+  let file = do_get_tempdir();
+  file.append("test_default_permissions");
+
+  // write our test data to it.
+  let ostream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(
+    Ci.nsIFileOutputStream
+  );
+  ostream.init(file, -1, 0o666, 0);
+  let conv = Cc["@mozilla.org/intl/converter-output-stream;1"].createInstance(
+    Ci.nsIConverterOutputStream
+  );
+  conv.init(ostream, "UTF-8");
+
+  conv.writeString("# this is a comment\n");
+  conv.writeString("\n"); // a blank line!
+  conv.writeString(
+    "host\t" + TEST_PERMISSION + "\t1\t" + TEST_ORIGIN.host + "\n"
+  );
+  conv.writeString(
+    "host\t" + TEST_PERMISSION + "\t1\t" + TEST_ORIGIN_2.host + "\n"
+  );
+  conv.writeString(
+    "origin\t" + TEST_PERMISSION + "\t1\t" + TEST_ORIGIN_3.spec + "\n"
+  );
+  conv.writeString(
+    "origin\t" + TEST_PERMISSION + "\t1\t" + TEST_ORIGIN.spec + "^inBrowser=1\n"
+  );
+  ostream.close();
+
+  // Set the preference used by the permission manager so the file is read.
+  Services.prefs.setCharPref(
+    "permissions.manager.defaultsUrl",
+    "file://" + file.path
+  );
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  let permIsolateUserContext = Services.prefs.getBoolPref(
+    "permissions.isolateBy.userContext"
+  );
+  let permIsolatePrivateBrowsing = Services.prefs.getBoolPref(
+    "permissions.isolateBy.privateBrowsing"
+  );
+
+  let pm = Services.perms;
+
+  // test the default permission was applied.
+  let principal = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN,
+    {}
+  );
+  let principalHttps = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN_HTTPS,
+    {}
+  );
+  let principal2 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN_2,
+    {}
+  );
+  let principal3 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN_3,
+    {}
+  );
+
+  let attrs = { inIsolatedMozBrowser: true };
+  let principal4 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN,
+    attrs
+  );
+  let principal5 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN_3,
+    attrs
+  );
+
+  attrs = { userContextId: 1 };
+  let principal1UserContext =
+    Services.scriptSecurityManager.createContentPrincipal(TEST_ORIGIN, attrs);
+  attrs = { privateBrowsingId: 1 };
+  let principal1PrivateBrowsing =
+    Services.scriptSecurityManager.createContentPrincipal(TEST_ORIGIN, attrs);
+  attrs = { firstPartyDomain: "cnn.com" };
+  let principal7 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN,
+    attrs
+  );
+  attrs = { userContextId: 1, firstPartyDomain: "cnn.com" };
+  let principal8 = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_ORIGIN,
+    attrs
+  );
+
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principalHttps, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal3, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal4, TEST_PERMISSION)
+  );
+  // Depending on the prefs there are two scenarios here:
+  // 1. We isolate by private browsing: The permission mgr should
+  //    add default permissions for these principals too.
+  // 2. We don't isolate by private browsing: The permission
+  //    check will strip the private browsing origin attribute.
+  //    In this case the used internally for the lookup is always principal1.
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+
+  // Didn't add
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal5, TEST_PERMISSION)
+  );
+
+  // the permission should exist in the enumerator.
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    findCapabilityViaEnum(TEST_ORIGIN)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    findCapabilityViaEnum(TEST_ORIGIN_3)
+  );
+
+  // but should not have been written to the DB
+  await checkCapabilityViaDB(null);
+
+  // remove all should not throw and the default should remain
+  pm.removeAll();
+
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal3, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal4, TEST_PERMISSION)
+  );
+  // Default permission should have also been added for private browsing.
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+  // make sure principals with userContextId use the same / different permissions
+  // depending on pref state
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal1UserContext, TEST_PERMISSION)
+  );
+  // make sure principals with a firstPartyDomain use different permissions
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal7, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal8, TEST_PERMISSION)
+  );
+
+  // Asking for this permission to be removed should result in that permission
+  // having UNKNOWN_ACTION
+  pm.removeFromPrincipal(principal, TEST_PERMISSION);
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  // make sure principals with userContextId use the correct permissions
+  // (Should be unknown with and without OA stripping )
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal1UserContext, TEST_PERMISSION)
+  );
+  // If we isolate by private browsing, the permission should still be present
+  // for the private browsing principal.
+  Assert.equal(
+    permIsolatePrivateBrowsing
+      ? Ci.nsIPermissionManager.ALLOW_ACTION
+      : Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+  // and we should have this UNKNOWN_ACTION reflected in the DB
+  await checkCapabilityViaDB(Ci.nsIPermissionManager.UNKNOWN_ACTION);
+  // but the permission should *not* appear in the enumerator.
+  Assert.equal(null, findCapabilityViaEnum());
+
+  // and a subsequent RemoveAll should restore the default
+  pm.removeAll();
+
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  // Make sure default imports work for private browsing after removeAll.
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+  // make sure principals with userContextId share permissions depending on pref state
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal1UserContext, TEST_PERMISSION)
+  );
+  // make sure principals with firstPartyDomain use different permissions
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal7, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal8, TEST_PERMISSION)
+  );
+  // and allow it to again be seen in the enumerator.
+  Assert.equal(Ci.nsIPermissionManager.ALLOW_ACTION, findCapabilityViaEnum());
+
+  // now explicitly add a permission - this too should override the default.
+  pm.addFromPrincipal(
+    principal,
+    TEST_PERMISSION,
+    Ci.nsIPermissionManager.DENY_ACTION
+  );
+
+  // it should be reflected in a permission check, in the enumerator and the DB
+  Assert.equal(
+    Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  // make sure principals with userContextId use the same / different permissions
+  // depending on pref state
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal1UserContext, TEST_PERMISSION)
+  );
+  // If we isolate by private browsing, we should still have the default perm
+  // for the private browsing principal.
+  Assert.equal(
+    permIsolatePrivateBrowsing
+      ? Ci.nsIPermissionManager.ALLOW_ACTION
+      : Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+  // make sure principals with firstPartyDomain use different permissions
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal7, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal8, TEST_PERMISSION)
+  );
+  Assert.equal(Ci.nsIPermissionManager.DENY_ACTION, findCapabilityViaEnum());
+  await checkCapabilityViaDB(Ci.nsIPermissionManager.DENY_ACTION);
+
+  // explicitly add a different permission - in this case we are no longer
+  // replacing the default, but instead replacing the replacement!
+  pm.addFromPrincipal(
+    principal,
+    TEST_PERMISSION,
+    Ci.nsIPermissionManager.PROMPT_ACTION
+  );
+
+  // it should be reflected in a permission check, in the enumerator and the DB
+  Assert.equal(
+    Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  // make sure principals with userContextId use the same / different permissions
+  // depending on pref state
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principal1UserContext, TEST_PERMISSION)
+  );
+  // If we isolate by private browsing, we should still have the default perm
+  // for the private browsing principal.
+  Assert.equal(
+    permIsolatePrivateBrowsing
+      ? Ci.nsIPermissionManager.ALLOW_ACTION
+      : Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principal1PrivateBrowsing, TEST_PERMISSION)
+  );
+  // make sure principals with firstPartyDomain use different permissions
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal7, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(principal8, TEST_PERMISSION)
+  );
+  Assert.equal(Ci.nsIPermissionManager.PROMPT_ACTION, findCapabilityViaEnum());
+  await checkCapabilityViaDB(Ci.nsIPermissionManager.PROMPT_ACTION);
+
+  // --------------------------------------------------------------
+  // check default permissions and removeAllSince work as expected.
+  pm.removeAll(); // ensure only defaults are there.
+
+  // default for both principals is allow.
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal2, TEST_PERMISSION)
+  );
+
+  // Add a default override for TEST_ORIGIN_2 - this one should *not* be
+  // restored in removeAllSince()
+  pm.addFromPrincipal(
+    principal2,
+    TEST_PERMISSION,
+    Ci.nsIPermissionManager.DENY_ACTION
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal2, TEST_PERMISSION)
+  );
+  await promiseTimeout(20);
+
+  let since = Number(Date.now());
+  await promiseTimeout(20);
+
+  // explicitly add a permission which overrides the default for the first
+  // principal - this one *should* be removed by removeAllSince.
+  pm.addFromPrincipal(
+    principal,
+    TEST_PERMISSION,
+    Ci.nsIPermissionManager.DENY_ACTION
+  );
+  Assert.equal(
+    Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+
+  // do a removeAllSince.
+  pm.removeAllSince(since);
+
+  // the default for the first principal should re-appear as we modified it
+  // later then |since|
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+
+  // but the permission for principal2 should remain as we added that before |since|.
+  Assert.equal(
+    Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal2, TEST_PERMISSION)
+  );
+
+  // remove the temp file we created.
+  file.remove(false);
+});
+
+// use an enumerator to find the requested permission.  Returns the permission
+// value (ie, the "capability" in nsIPermission parlance) or null if it can't
+// be found.
+function findCapabilityViaEnum(origin = TEST_ORIGIN, type = TEST_PERMISSION) {
+  let result = undefined;
+  for (let perm of Services.perms.all) {
+    if (perm.matchesURI(origin, true) && perm.type == type) {
+      if (result !== undefined) {
+        // we've already found one previously - that's bad!
+        do_throw("enumerator found multiple entries");
+      }
+      result = perm.capability;
+    }
+  }
+  return result || null;
+}
+
+// A function to check the DB has the specified capability.  As the permission
+// manager uses async DB operations without a completion callback, the
+// distinct possibility exists that our checking of the DB will happen before
+// the permission manager update has completed - so we just retry a few times.
+// Returns a promise.
+function checkCapabilityViaDB(
+  expected,
+  origin = TEST_ORIGIN,
+  type = TEST_PERMISSION
+) {
+  return new Promise(resolve => {
+    let count = 0;
+    let max = 20;
+    let do_check = () => {
+      let got = findCapabilityViaDB(origin, type);
+      if (got == expected) {
+        // the do_check_eq() below will succeed - which is what we want.
+        Assert.equal(got, expected, "The database has the expected value");
+        resolve();
+        return;
+      }
+      // value isn't correct - see if we've retried enough
+      if (count++ == max) {
+        // the do_check_eq() below will fail - which is what we want.
+        Assert.equal(
+          got,
+          expected,
+          "The database wasn't updated with the expected value"
+        );
+        resolve();
+        return;
+      }
+      // we can retry...
+      do_timeout(100, do_check);
+    };
+    do_check();
+  });
+}
+
+// use the DB to find the requested permission.   Returns the permission
+// value (ie, the "capability" in nsIPermission parlance) or null if it can't
+// be found.
+function findCapabilityViaDB(origin = TEST_ORIGIN, type = TEST_PERMISSION) {
+  let principal = Services.scriptSecurityManager.createContentPrincipal(
+    origin,
+    {}
+  );
+  let originStr = principal.origin;
+
+  let file = Services.dirsvc.get("ProfD", Ci.nsIFile);
+  file.append("permissions.sqlite");
+
+  let connection = Services.storage.openDatabase(file);
+
+  let query = connection.createStatement(
+    "SELECT permission FROM moz_perms WHERE origin = :origin AND type = :type"
+  );
+  query.bindByName("origin", originStr);
+  query.bindByName("type", type);
+
+  if (!query.executeStep()) {
+    // no row
+    return null;
+  }
+  let result = query.getInt32(0);
+  if (query.executeStep()) {
+    // this is bad - we never expect more than 1 row here.
+    do_throw("More than 1 row found!");
+  }
+  return result;
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_expiration.js b/extensions/permissions/test/unit/test_permmanager_expiration.js
new file mode 100644
index 0000000000..24ff366730
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_expiration.js
@@ -0,0 +1,189 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that permissions with specific expiry times behave as expected.
+var test_generator = do_run_test();
+
+function run_test() {
+  do_test_pending();
+  test_generator.next();
+}
+
+function continue_test() {
+  do_run_generator(test_generator);
+}
+
+function* do_run_test() {
+  let pm = Services.perms;
+  let permURI = NetUtil.newURI("http://example.com");
+  let principal = Services.scriptSecurityManager.createContentPrincipal(
+    permURI,
+    {}
+  );
+
+  let now = Number(Date.now());
+
+  // add a permission with *now* expiration
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-perm-exp",
+    1,
+    pm.EXPIRE_TIME,
+    now
+  );
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-session-exp",
+    1,
+    pm.EXPIRE_SESSION,
+    now
+  );
+
+  // add a permission with future expiration (100 milliseconds)
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-perm-exp2",
+    1,
+    pm.EXPIRE_TIME,
+    now + 100
+  );
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-session-exp2",
+    1,
+    pm.EXPIRE_SESSION,
+    now + 100
+  );
+
+  // add a permission with future expiration (1000 seconds)
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-perm-exp3",
+    1,
+    pm.EXPIRE_TIME,
+    now + 1e6
+  );
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-session-exp3",
+    1,
+    pm.EXPIRE_SESSION,
+    now + 1e6
+  );
+
+  // add a permission without expiration
+  pm.addFromPrincipal(
+    principal,
+    "test/expiration-perm-nexp",
+    1,
+    pm.EXPIRE_NEVER,
+    0
+  );
+
+  // check that the second two haven't expired yet
+  Assert.equal(
+    1,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-perm-exp3")
+  );
+  Assert.equal(
+    1,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-session-exp3")
+  );
+  Assert.equal(
+    1,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-perm-nexp")
+  );
+  Assert.equal(1, pm.getAllWithTypePrefix("test/expiration-perm-exp3").length);
+  Assert.equal(
+    1,
+    pm.getAllWithTypePrefix("test/expiration-session-exp3").length
+  );
+  Assert.equal(1, pm.getAllWithTypePrefix("test/expiration-perm-nexp").length);
+  Assert.equal(5, pm.getAllForPrincipal(principal).length);
+
+  // ... and the first one has
+  do_timeout(10, continue_test);
+  yield;
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-perm-exp")
+  );
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-session-exp")
+  );
+
+  // ... and that the short-term one will
+  do_timeout(200, continue_test);
+  yield;
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-perm-exp2")
+  );
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal, "test/expiration-session-exp2")
+  );
+  Assert.equal(0, pm.getAllWithTypePrefix("test/expiration-perm-exp2").length);
+  Assert.equal(
+    0,
+    pm.getAllWithTypePrefix("test/expiration-session-exp2").length
+  );
+
+  Assert.equal(3, pm.getAllForPrincipal(principal).length);
+
+  // Check that .getPermission returns a matching result
+  Assert.equal(
+    null,
+    pm.getPermissionObject(principal, "test/expiration-perm-exp", false)
+  );
+  Assert.equal(
+    null,
+    pm.getPermissionObject(principal, "test/expiration-session-exp", false)
+  );
+  Assert.equal(
+    null,
+    pm.getPermissionObject(principal, "test/expiration-perm-exp2", false)
+  );
+  Assert.equal(
+    null,
+    pm.getPermissionObject(principal, "test/expiration-session-exp2", false)
+  );
+
+  // Add a persistent permission for private browsing
+  let principalPB = Services.scriptSecurityManager.createContentPrincipal(
+    permURI,
+    { privateBrowsingId: 1 }
+  );
+  pm.addFromPrincipal(
+    principalPB,
+    "test/expiration-session-pb",
+    pm.ALLOW_ACTION
+  );
+
+  // The permission should be set to session expiry
+  let perm = pm.getPermissionObject(
+    principalPB,
+    "test/expiration-session-pb",
+    true
+  );
+  Assert.equal(perm.expireType, pm.EXPIRE_SESSION);
+
+  // Add a persistent permission for private browsing using
+  // addFromPrincipalAndPersistInPrivateBrowsing
+  pm.addFromPrincipalAndPersistInPrivateBrowsing(
+    principalPB,
+    "test/expiration-session-pb",
+    pm.ALLOW_ACTION
+  );
+
+  // The permission should be set to never expire
+  perm = pm.getPermissionObject(
+    principalPB,
+    "test/expiration-session-pb",
+    true
+  );
+  Assert.equal(perm.expireType, pm.EXPIRE_NEVER);
+
+  do_finish_generator_test(test_generator);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_getAllByTypeSince.js b/extensions/permissions/test/unit/test_permmanager_getAllByTypeSince.js
new file mode 100644
index 0000000000..918f184673
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_getAllByTypeSince.js
@@ -0,0 +1,79 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function check_enumerator(prefix, from, permissions) {
+  let pm = Services.perms;
+
+  let array = pm.getAllByTypeSince(prefix, from);
+  Assert.equal(array.length, permissions.length);
+  for (let [principal, type, capability] of permissions) {
+    let perm = array.find(p => p.principal.equals(principal));
+    Assert.ok(perm != null);
+    Assert.equal(perm.type, type);
+    Assert.equal(perm.capability, capability);
+    Assert.equal(perm.expireType, pm.EXPIRE_NEVER);
+  }
+}
+
+add_task(async function test() {
+  let pm = Services.perms;
+
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://example.com"
+    );
+  let subPrincipal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://sub.example.com"
+    );
+
+  check_enumerator("test/", 0, []);
+
+  pm.addFromPrincipal(principal, "test/getAllByTypeSince", pm.ALLOW_ACTION);
+
+  // These shouldn't show up anywhere, the name doesn't match.
+  pm.addFromPrincipal(
+    subPrincipal,
+    "other-test/getAllByTypeSince",
+    pm.PROMPT_ACTION
+  );
+  pm.addFromPrincipal(principal, "test/getAllByTypeSince1", pm.PROMPT_ACTION);
+
+  check_enumerator("test/getAllByTypeSince", 0, [
+    [principal, "test/getAllByTypeSince", pm.ALLOW_ACTION],
+  ]);
+
+  // Add some time in between taking the snapshot of the timestamp
+  // to avoid flakyness.
+  await new Promise(c => do_timeout(100, c));
+  let timestamp = Date.now();
+  await new Promise(c => do_timeout(100, c));
+
+  pm.addFromPrincipal(subPrincipal, "test/getAllByTypeSince", pm.DENY_ACTION);
+
+  check_enumerator("test/getAllByTypeSince", 0, [
+    [subPrincipal, "test/getAllByTypeSince", pm.DENY_ACTION],
+    [principal, "test/getAllByTypeSince", pm.ALLOW_ACTION],
+  ]);
+
+  check_enumerator("test/getAllByTypeSince", timestamp, [
+    [subPrincipal, "test/getAllByTypeSince", pm.DENY_ACTION],
+  ]);
+
+  // check that UNKNOWN_ACTION permissions are ignored
+  pm.addFromPrincipal(
+    subPrincipal,
+    "test/getAllByTypeSince",
+    pm.UNKNOWN_ACTION
+  );
+
+  check_enumerator("test/getAllByTypeSince", 0, [
+    [principal, "test/getAllByTypeSince", pm.ALLOW_ACTION],
+  ]);
+
+  // check that permission removals are reflected
+  pm.removeFromPrincipal(principal, "test/getAllByTypeSince");
+  check_enumerator("test/", 0, []);
+
+  pm.removeAll();
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_getAllByTypes.js b/extensions/permissions/test/unit/test_permmanager_getAllByTypes.js
new file mode 100644
index 0000000000..ab40c4b12a
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_getAllByTypes.js
@@ -0,0 +1,124 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function check_enumerator(permissionTypes, expectedPermissions) {
+  const permissions = Services.perms.getAllByTypes(permissionTypes);
+
+  Assert.equal(
+    permissions.length,
+    expectedPermissions.length,
+    `getAllByTypes returned the expected number of permissions for ${JSON.stringify(
+      permissionTypes
+    )}`
+  );
+
+  for (const perm of permissions) {
+    Assert.ok(perm != null);
+
+    // For some reason, the order in which we get the permissions doesn't seem to be
+    // stable when running the test with --verify. As a result, we need to retrieve the
+    // expected permission for the origin and type.
+    const expectedPermission = expectedPermissions.find(
+      ([expectedPrincipal, expectedType]) =>
+        perm.principal.equals(expectedPrincipal) && perm.type === expectedType
+    );
+
+    Assert.ok(expectedPermission !== null, "Found the expected permission");
+    Assert.equal(perm.capability, expectedPermission[2]);
+    Assert.equal(perm.expireType, Services.perms.EXPIRE_NEVER);
+  }
+}
+
+function run_test() {
+  let pm = Services.perms;
+
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://example.com"
+    );
+  let subPrincipal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://sub.example.com"
+    );
+
+  const PERM_TYPE_1 = "test/getallbytypes_1";
+  const PERM_TYPE_2 = "test/getallbytypes_2";
+
+  info("check default state");
+  check_enumerator([], []);
+  check_enumerator([PERM_TYPE_1], []);
+  check_enumerator([PERM_TYPE_2], []);
+  check_enumerator([PERM_TYPE_1, PERM_TYPE_2], []);
+
+  info("check that expected permissions are retrieved");
+  pm.addFromPrincipal(principal, PERM_TYPE_1, pm.ALLOW_ACTION);
+  pm.addFromPrincipal(
+    subPrincipal,
+    "other-test/getallbytypes_1",
+    pm.PROMPT_ACTION
+  );
+  check_enumerator([PERM_TYPE_1], [[principal, PERM_TYPE_1, pm.ALLOW_ACTION]]);
+  check_enumerator(
+    [PERM_TYPE_1, PERM_TYPE_2],
+    [[principal, PERM_TYPE_1, pm.ALLOW_ACTION]]
+  );
+  check_enumerator([], []);
+  check_enumerator([PERM_TYPE_2], []);
+
+  pm.addFromPrincipal(subPrincipal, PERM_TYPE_1, pm.PROMPT_ACTION);
+  check_enumerator(
+    [PERM_TYPE_1],
+    [
+      [subPrincipal, PERM_TYPE_1, pm.PROMPT_ACTION],
+      [principal, PERM_TYPE_1, pm.ALLOW_ACTION],
+    ]
+  );
+  check_enumerator(
+    [PERM_TYPE_1, PERM_TYPE_2],
+    [
+      [subPrincipal, PERM_TYPE_1, pm.PROMPT_ACTION],
+      [principal, PERM_TYPE_1, pm.ALLOW_ACTION],
+    ]
+  );
+  check_enumerator([], []);
+  check_enumerator([PERM_TYPE_2], []);
+
+  pm.addFromPrincipal(principal, PERM_TYPE_2, pm.PROMPT_ACTION);
+  check_enumerator(
+    [PERM_TYPE_1, PERM_TYPE_2],
+    [
+      [subPrincipal, PERM_TYPE_1, pm.PROMPT_ACTION],
+      [principal, PERM_TYPE_1, pm.ALLOW_ACTION],
+      [principal, PERM_TYPE_2, pm.PROMPT_ACTION],
+    ]
+  );
+  check_enumerator([], []);
+  check_enumerator([PERM_TYPE_2], [[principal, PERM_TYPE_2, pm.PROMPT_ACTION]]);
+
+  info("check that UNKNOWN_ACTION permissions are ignored");
+  pm.addFromPrincipal(subPrincipal, PERM_TYPE_2, pm.UNKNOWN_ACTION);
+  check_enumerator([PERM_TYPE_2], [[principal, PERM_TYPE_2, pm.PROMPT_ACTION]]);
+
+  info("check that permission updates are reflected");
+  pm.addFromPrincipal(subPrincipal, PERM_TYPE_2, pm.PROMPT_ACTION);
+  check_enumerator(
+    [PERM_TYPE_2],
+    [
+      [subPrincipal, PERM_TYPE_2, pm.PROMPT_ACTION],
+      [principal, PERM_TYPE_2, pm.PROMPT_ACTION],
+    ]
+  );
+
+  info("check that permission removals are reflected");
+  pm.removeFromPrincipal(principal, PERM_TYPE_1);
+  check_enumerator(
+    [PERM_TYPE_1],
+    [[subPrincipal, PERM_TYPE_1, pm.PROMPT_ACTION]]
+  );
+
+  pm.removeAll();
+  check_enumerator([], []);
+  check_enumerator([PERM_TYPE_1], []);
+  check_enumerator([PERM_TYPE_2], []);
+  check_enumerator([PERM_TYPE_1, PERM_TYPE_2], []);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_getAllForPrincipal.js b/extensions/permissions/test/unit/test_permmanager_getAllForPrincipal.js
new file mode 100644
index 0000000000..ad9db37c91
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_getAllForPrincipal.js
@@ -0,0 +1,72 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function check_enumerator(principal, permissions) {
+  let perms = Services.perms.getAllForPrincipal(principal);
+  for (let [type, capability] of permissions) {
+    let perm = perms.shift();
+    Assert.ok(perm != null);
+    Assert.equal(perm.type, type);
+    Assert.equal(perm.capability, capability);
+    Assert.equal(perm.expireType, Services.perms.EXPIRE_NEVER);
+  }
+  Assert.ok(!perms.length);
+}
+
+function run_test() {
+  let pm = Services.perms;
+
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://example.com"
+    );
+  let subPrincipal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://sub.example.com"
+    );
+
+  check_enumerator(principal, []);
+
+  pm.addFromPrincipal(principal, "test/getallforuri", pm.ALLOW_ACTION);
+  check_enumerator(principal, [["test/getallforuri", pm.ALLOW_ACTION]]);
+
+  // check that uris are matched exactly
+  check_enumerator(subPrincipal, []);
+
+  pm.addFromPrincipal(subPrincipal, "test/getallforuri", pm.PROMPT_ACTION);
+  pm.addFromPrincipal(subPrincipal, "test/getallforuri2", pm.DENY_ACTION);
+
+  check_enumerator(subPrincipal, [
+    ["test/getallforuri", pm.PROMPT_ACTION],
+    ["test/getallforuri2", pm.DENY_ACTION],
+  ]);
+
+  // check that the original uri list has not changed
+  check_enumerator(principal, [["test/getallforuri", pm.ALLOW_ACTION]]);
+
+  // check that UNKNOWN_ACTION permissions are ignored
+  pm.addFromPrincipal(principal, "test/getallforuri2", pm.UNKNOWN_ACTION);
+  pm.addFromPrincipal(principal, "test/getallforuri3", pm.DENY_ACTION);
+
+  check_enumerator(principal, [
+    ["test/getallforuri", pm.ALLOW_ACTION],
+    ["test/getallforuri3", pm.DENY_ACTION],
+  ]);
+
+  // check that permission updates are reflected
+  pm.addFromPrincipal(principal, "test/getallforuri", pm.PROMPT_ACTION);
+
+  check_enumerator(principal, [
+    ["test/getallforuri", pm.PROMPT_ACTION],
+    ["test/getallforuri3", pm.DENY_ACTION],
+  ]);
+
+  // check that permission removals are reflected
+  pm.removeFromPrincipal(principal, "test/getallforuri");
+
+  check_enumerator(principal, [["test/getallforuri3", pm.DENY_ACTION]]);
+
+  pm.removeAll();
+  check_enumerator(principal, []);
+  check_enumerator(subPrincipal, []);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_getAllWithTypePrefix.js b/extensions/permissions/test/unit/test_permmanager_getAllWithTypePrefix.js
new file mode 100644
index 0000000000..e3708cf445
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_getAllWithTypePrefix.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function check_enumerator(prefix, permissions) {
+  let pm = Services.perms;
+
+  let array = pm.getAllWithTypePrefix(prefix);
+  for (let [principal, type, capability] of permissions) {
+    let perm = array.shift();
+    Assert.ok(perm != null);
+    Assert.ok(perm.principal.equals(principal));
+    Assert.equal(perm.type, type);
+    Assert.equal(perm.capability, capability);
+    Assert.equal(perm.expireType, pm.EXPIRE_NEVER);
+  }
+  Assert.equal(array.length, 0);
+}
+
+function run_test() {
+  let pm = Services.perms;
+
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://example.com"
+    );
+  let subPrincipal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://sub.example.com"
+    );
+
+  check_enumerator("test/", []);
+
+  pm.addFromPrincipal(principal, "test/getallwithtypeprefix", pm.ALLOW_ACTION);
+  pm.addFromPrincipal(
+    subPrincipal,
+    "other-test/getallwithtypeprefix",
+    pm.PROMPT_ACTION
+  );
+  check_enumerator("test/", [
+    [principal, "test/getallwithtypeprefix", pm.ALLOW_ACTION],
+  ]);
+
+  pm.addFromPrincipal(
+    subPrincipal,
+    "test/getallwithtypeprefix",
+    pm.PROMPT_ACTION
+  );
+  check_enumerator("test/", [
+    [subPrincipal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+    [principal, "test/getallwithtypeprefix", pm.ALLOW_ACTION],
+  ]);
+
+  check_enumerator("test/getallwithtypeprefix", [
+    [subPrincipal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+    [principal, "test/getallwithtypeprefix", pm.ALLOW_ACTION],
+  ]);
+
+  // check that UNKNOWN_ACTION permissions are ignored
+  pm.addFromPrincipal(
+    principal,
+    "test/getallwithtypeprefix2",
+    pm.UNKNOWN_ACTION
+  );
+  check_enumerator("test/", [
+    [subPrincipal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+    [principal, "test/getallwithtypeprefix", pm.ALLOW_ACTION],
+  ]);
+
+  // check that permission updates are reflected
+  pm.addFromPrincipal(principal, "test/getallwithtypeprefix", pm.PROMPT_ACTION);
+  check_enumerator("test/", [
+    [subPrincipal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+    [principal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+  ]);
+
+  // check that permission removals are reflected
+  pm.removeFromPrincipal(principal, "test/getallwithtypeprefix");
+  check_enumerator("test/", [
+    [subPrincipal, "test/getallwithtypeprefix", pm.PROMPT_ACTION],
+  ]);
+
+  pm.removeAll();
+  check_enumerator("test/", []);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_getPermissionObject.js b/extensions/permissions/test/unit/test_permmanager_getPermissionObject.js
new file mode 100644
index 0000000000..78ef9ab08a
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_getPermissionObject.js
@@ -0,0 +1,98 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function getPrincipalFromURI(aURI) {
+  let ssm = Services.scriptSecurityManager;
+  let uri = NetUtil.newURI(aURI);
+  return ssm.createContentPrincipal(uri, {});
+}
+
+function getSystemPrincipal() {
+  return Services.scriptSecurityManager.getSystemPrincipal();
+}
+
+function run_test() {
+  var pm = Services.perms;
+
+  Assert.equal(
+    null,
+    pm.getPermissionObject(getSystemPrincipal(), "test/pobject", false)
+  );
+
+  let principal = getPrincipalFromURI("http://example.com");
+  let subPrincipal = getPrincipalFromURI("http://sub.example.com");
+  let subSubPrincipal = getPrincipalFromURI("http://sub.sub.example.com");
+
+  Assert.equal(null, pm.getPermissionObject(principal, "test/pobject", false));
+  Assert.equal(null, pm.getPermissionObject(principal, "test/pobject", true));
+
+  pm.addFromPrincipal(principal, "test/pobject", pm.ALLOW_ACTION);
+  var rootPerm = pm.getPermissionObject(principal, "test/pobject", false);
+  Assert.ok(rootPerm != null);
+  Assert.equal(rootPerm.principal.origin, "http://example.com");
+  Assert.equal(rootPerm.type, "test/pobject");
+  Assert.equal(rootPerm.capability, pm.ALLOW_ACTION);
+  Assert.equal(rootPerm.expireType, pm.EXPIRE_NEVER);
+
+  Assert.ok(rootPerm != null);
+  Assert.equal(rootPerm.principal.origin, "http://example.com");
+
+  var subPerm = pm.getPermissionObject(subPrincipal, "test/pobject", true);
+  Assert.equal(null, subPerm);
+  subPerm = pm.getPermissionObject(subPrincipal, "test/pobject", false);
+  Assert.ok(subPerm != null);
+  Assert.equal(subPerm.principal.origin, "http://example.com");
+  Assert.equal(subPerm.type, "test/pobject");
+  Assert.equal(subPerm.capability, pm.ALLOW_ACTION);
+
+  subPerm = pm.getPermissionObject(subSubPrincipal, "test/pobject", true);
+  Assert.equal(null, subPerm);
+  subPerm = pm.getPermissionObject(subSubPrincipal, "test/pobject", false);
+  Assert.ok(subPerm != null);
+  Assert.equal(subPerm.principal.origin, "http://example.com");
+
+  pm.addFromPrincipal(
+    principal,
+    "test/pobject",
+    pm.DENY_ACTION,
+    pm.EXPIRE_SESSION
+  );
+
+  // make sure permission objects are not dynamic
+  Assert.equal(rootPerm.capability, pm.ALLOW_ACTION);
+
+  // but do update on change
+  rootPerm = pm.getPermissionObject(principal, "test/pobject", true);
+  Assert.equal(rootPerm.capability, pm.DENY_ACTION);
+  Assert.equal(rootPerm.expireType, pm.EXPIRE_SESSION);
+
+  subPerm = pm.getPermissionObject(subPrincipal, "test/pobject", false);
+  Assert.equal(subPerm.principal.origin, "http://example.com");
+  Assert.equal(subPerm.capability, pm.DENY_ACTION);
+  Assert.equal(subPerm.expireType, pm.EXPIRE_SESSION);
+
+  pm.addFromPrincipal(subPrincipal, "test/pobject", pm.PROMPT_ACTION);
+  rootPerm = pm.getPermissionObject(principal, "test/pobject", true);
+  Assert.equal(rootPerm.principal.origin, "http://example.com");
+  Assert.equal(rootPerm.capability, pm.DENY_ACTION);
+
+  subPerm = pm.getPermissionObject(subPrincipal, "test/pobject", true);
+  Assert.equal(subPerm.principal.origin, "http://sub.example.com");
+  Assert.equal(subPerm.capability, pm.PROMPT_ACTION);
+
+  subPerm = pm.getPermissionObject(subPrincipal, "test/pobject", false);
+  Assert.equal(subPerm.principal.origin, "http://sub.example.com");
+  Assert.equal(subPerm.capability, pm.PROMPT_ACTION);
+
+  subPerm = pm.getPermissionObject(subSubPrincipal, "test/pobject", true);
+  Assert.equal(null, subPerm);
+
+  subPerm = pm.getPermissionObject(subSubPrincipal, "test/pobject", false);
+  Assert.equal(subPerm.principal.origin, "http://sub.example.com");
+  Assert.equal(subPerm.capability, pm.PROMPT_ACTION);
+
+  pm.removeFromPrincipal(principal, "test/pobject");
+
+  rootPerm = pm.getPermissionObject(principal, "test/pobject", true);
+  Assert.equal(null, rootPerm);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_idn.js b/extensions/permissions/test/unit/test_permmanager_idn.js
new file mode 100644
index 0000000000..5719131245
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_idn.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function getPrincipalFromDomain(aDomain) {
+  let ssm = Services.scriptSecurityManager;
+  let uri = NetUtil.newURI("http://" + aDomain);
+  return ssm.createContentPrincipal(uri, {});
+}
+
+function run_test() {
+  let pm = Services.perms;
+  let perm = "test-idn";
+
+  // We create three principal linked to IDN.
+  // One with just a domain, one with a subdomain and one with the TLD
+  // containing a UTF-8 character.
+  let mainDomainPrincipal = getPrincipalFromDomain("fôû.com");
+  let subDomainPrincipal = getPrincipalFromDomain("fôô.bàr.com");
+  let tldPrincipal = getPrincipalFromDomain("fôû.bàr.côm");
+
+  // We add those to the permission manager.
+  pm.addFromPrincipal(mainDomainPrincipal, perm, pm.ALLOW_ACTION, 0, 0);
+  pm.addFromPrincipal(subDomainPrincipal, perm, pm.ALLOW_ACTION, 0, 0);
+  pm.addFromPrincipal(tldPrincipal, perm, pm.ALLOW_ACTION, 0, 0);
+
+  // They should obviously be there now..
+  Assert.equal(
+    pm.testPermissionFromPrincipal(mainDomainPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subDomainPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(tldPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+
+  // We do the same thing with the puny-encoded versions of the IDN.
+  let punyMainDomainPrincipal = getPrincipalFromDomain("xn--f-xgav.com");
+  let punySubDomainPrincipal = getPrincipalFromDomain(
+    "xn--f-xgaa.xn--br-jia.com"
+  );
+  let punyTldPrincipal = getPrincipalFromDomain(
+    "xn--f-xgav.xn--br-jia.xn--cm-8ja"
+  );
+
+  // Those principals should have the permission granted too.
+  Assert.equal(
+    pm.testPermissionFromPrincipal(punyMainDomainPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(punySubDomainPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(punyTldPrincipal, perm),
+    pm.ALLOW_ACTION
+  );
+
+  // However, those two principals shouldn't be allowed because they are like
+  // the IDN but without the UT8-8 characters.
+  let witnessPrincipal = getPrincipalFromDomain("foo.com");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, perm),
+    pm.UNKNOWN_ACTION
+  );
+  witnessPrincipal = getPrincipalFromDomain("foo.bar.com");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, perm),
+    pm.UNKNOWN_ACTION
+  );
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_ipc.js b/extensions/permissions/test/unit/test_permmanager_ipc.js
new file mode 100644
index 0000000000..239cc5aeaf
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_ipc.js
@@ -0,0 +1,89 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { ExtensionTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/ExtensionXPCShellUtils.sys.mjs"
+);
+
+add_task(async function test_permissions_sent_over_ipc_on_bloburl() {
+  const ssm = Services.scriptSecurityManager;
+  const pm = Services.perms;
+
+  // setup a profile.
+  do_get_profile();
+
+  async function assertExpectedContentPage(contentPage) {
+    const [processType, remoteType, principalSpec] = await page.spawn(
+      [],
+      async () => {
+        return [
+          Services.appinfo.processType,
+          Services.appinfo.remoteType,
+          this.content.document.nodePrincipal.spec,
+        ];
+      }
+    );
+
+    equal(
+      processType,
+      Services.appinfo.PROCESS_TYPE_CONTENT,
+      "Got a content process"
+    );
+    equal(remoteType, "file", "Got a file child process");
+    equal(principalSpec, principal.spec, "Got the expected document principal");
+  }
+
+  function getChildProcessID(contentPage) {
+    return contentPage.spawn([], () => Services.appinfo.processID);
+  }
+
+  async function assertHasAllowedPermission(contentPage, perm) {
+    const isPermissionAllowed = await contentPage.spawn(
+      [perm],
+      permName =>
+        Services.perms.getPermissionObject(
+          this.content.document.nodePrincipal,
+          permName,
+          true
+        )?.capability === Services.perms.ALLOW_ACTION
+    );
+    ok(isPermissionAllowed, `Permission "${perm}" allowed as expected`);
+  }
+
+  let file = do_get_file(".", true);
+  let fileURI = Services.io.newFileURI(file);
+  const principal = ssm.createContentPrincipal(fileURI, {});
+  info(`Add a test permission to the document principal: ${principal.spec}`);
+  pm.addFromPrincipal(principal, "test/perm", pm.ALLOW_ACTION);
+
+  info("Test expected permission is propagated into the child process");
+  let page = await ExtensionTestUtils.loadContentPage(fileURI.spec);
+  const childID1 = await getChildProcessID(page);
+  await assertExpectedContentPage(page);
+  await assertHasAllowedPermission(page, "test/perm");
+  await page.close();
+
+  // Ensure this blob url does not prevent permissions to be propagated
+  // to a new child process.
+  info("Create a blob url for a non http/https principal");
+  const blob = new Blob();
+  const blobURL = URL.createObjectURL(blob);
+  ok(blobURL, "Got a blob URL");
+
+  info("Test expected permission is still propagated");
+  page = await ExtensionTestUtils.loadContentPage(fileURI.spec);
+  const childID2 = await getChildProcessID(page);
+  await assertExpectedContentPage(page);
+  Assert.notEqual(childID1, childID2, "Got a new child process as expected");
+  await assertHasAllowedPermission(page, "test/perm");
+  await page.close();
+
+  URL.revokeObjectURL(blobURL);
+
+  page = await ExtensionTestUtils.loadContentPage(fileURI.spec);
+  const childID3 = await getChildProcessID(page);
+  await assertExpectedContentPage(page);
+  Assert.notEqual(childID2, childID3, "Got a new child process as expected");
+  await assertHasAllowedPermission(page, "test/perm");
+  await page.close();
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_load_invalid_entries.js b/extensions/permissions/test/unit/test_permmanager_load_invalid_entries.js
new file mode 100644
index 0000000000..decbce81a0
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_load_invalid_entries.js
@@ -0,0 +1,264 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+var DEBUG_TEST = false;
+
+function run_test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  // Setup a profile directory.
+  var dir = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  // Get the db file.
+  var file = dir.clone();
+  file.append("permissions.sqlite");
+
+  var storage = Services.storage;
+
+  // Create database.
+  var connection = storage.openDatabase(file);
+  // The file should now exist.
+  Assert.ok(file.exists());
+
+  connection.schemaVersion = 3;
+  connection.executeSimpleSQL("DROP TABLE moz_hosts");
+  connection.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  // Now we can inject garbadge in the database.
+  var garbadge = [
+    // Regular entry.
+    {
+      host: "42",
+      type: "0",
+      permission: 1,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // Special values in host (some being invalid).
+    {
+      host: "scheme:file",
+      type: "1",
+      permission: 0,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "192.168.0.1",
+      type: "2",
+      permission: 0,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "2001:0db8:0000:0000:0000:ff00:0042:8329",
+      type: "3",
+      permission: 0,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "::1",
+      type: "4",
+      permission: 0,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // Permission is UNKNOWN_ACTION.
+    {
+      host: "42",
+      type: "5",
+      permission: Ci.nsIPermissionManager.UNKNOWN_ACTION,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // Permission is out of range.
+    {
+      host: "42",
+      type: "6",
+      permission: 100,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "42",
+      type: "7",
+      permission: -100,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // ExpireType is out of range.
+    {
+      host: "42",
+      type: "8",
+      permission: 1,
+      expireType: -100,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "42",
+      type: "9",
+      permission: 1,
+      expireType: 100,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // ExpireTime is at 0 with ExpireType = Time.
+    {
+      host: "42",
+      type: "10",
+      permission: 1,
+      expireType: Ci.nsIPermissionManager.EXPIRE_TIME,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+
+    // ExpireTime has a value with ExpireType != Time
+    {
+      host: "42",
+      type: "11",
+      permission: 1,
+      expireType: Ci.nsIPermissionManager.EXPIRE_SESSION,
+      expireTime: 1000,
+      isInBrowserElement: 0,
+    },
+    {
+      host: "42",
+      type: "12",
+      permission: 1,
+      expireType: Ci.nsIPermissionManager.EXPIRE_NEVER,
+      expireTime: 1000,
+      isInBrowserElement: 0,
+    },
+
+    // ExpireTime is negative.
+    {
+      host: "42",
+      type: "13",
+      permission: 1,
+      expireType: Ci.nsIPermissionManager.EXPIRE_TIME,
+      expireTime: -1,
+      isInBrowserElement: 0,
+    },
+
+    // IsInBrowserElement is negative or higher than 1.
+    {
+      host: "42",
+      type: "15",
+      permission: 1,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: -1,
+    },
+    {
+      host: "42",
+      type: "16",
+      permission: 1,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 10,
+    },
+
+    // This insertion should be the last one. It is used to make sure we always
+    // load it regardless of the previous entries validities.
+    {
+      host: "example.org",
+      type: "test-load-invalid-entries",
+      permission: Ci.nsIPermissionManager.ALLOW_ACTION,
+      expireType: 0,
+      expireTime: 0,
+      isInBrowserElement: 0,
+    },
+  ];
+
+  for (var i = 0; i < garbadge.length; ++i) {
+    if (DEBUG_TEST) {
+      dump("\n value #" + i + "\n\n");
+    }
+    var data = garbadge[i];
+    connection.executeSimpleSQL(
+      "INSERT INTO moz_hosts " +
+        " (id, host, type, permission, expireType, expireTime, isInBrowserElement, appId) " +
+        "VALUES (" +
+        i +
+        ", '" +
+        data.host +
+        "', '" +
+        data.type +
+        "', " +
+        data.permission +
+        ", " +
+        data.expireType +
+        ", " +
+        data.expireTime +
+        ", " +
+        data.isInBrowserElement +
+        ", 0)"
+    );
+  }
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Let's do something in order to be sure the DB is read.
+  Assert.greater(pm.all.length, 0);
+
+  // The schema should be upgraded to 11, and a 'modificationTime' column should
+  // exist with all records having a value of 0.
+  Assert.equal(connection.schemaVersion, 12);
+
+  let select = connection.createStatement(
+    "SELECT modificationTime FROM moz_perms"
+  );
+  let numMigrated = 0;
+  while (select.executeStep()) {
+    let thisModTime = select.getInt64(0);
+    Assert.ok(
+      thisModTime > 0,
+      "new modifiedTime field is correct (but it's not 0!)"
+    );
+    numMigrated += 1;
+  }
+  // check we found at least 1 record that was migrated.
+  Assert.greater(
+    numMigrated,
+    0,
+    "we found at least 1 record that was migrated"
+  );
+
+  // This permission should always be there.
+  let ssm = Services.scriptSecurityManager;
+  let uri = NetUtil.newURI("http://example.org");
+  let principal = ssm.createContentPrincipal(uri, {});
+  Assert.equal(
+    pm.testPermissionFromPrincipal(principal, "test-load-invalid-entries"),
+    Ci.nsIPermissionManager.ALLOW_ACTION
+  );
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_local_files.js b/extensions/permissions/test/unit/test_permmanager_local_files.js
new file mode 100644
index 0000000000..389eb77916
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_local_files.js
@@ -0,0 +1,74 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that permissions work for file:// URIs (aka local files).
+
+function getPrincipalFromURIString(uriStr) {
+  let uri = NetUtil.newURI(uriStr);
+  return Services.scriptSecurityManager.createContentPrincipal(uri, {});
+}
+
+function run_test() {
+  let pm = Services.perms;
+
+  // If we add a permission to a file:// URI, the test should return true.
+  let principal = getPrincipalFromURIString("file:///foo/bar");
+  pm.addFromPrincipal(principal, "test/local-files", pm.ALLOW_ACTION, 0, 0);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(principal, "test/local-files"),
+    pm.ALLOW_ACTION
+  );
+
+  // Another file:// URI should have the same permission.
+  let witnessPrincipal = getPrincipalFromURIString("file:///bar/foo");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Giving "file:///" a permission shouldn't give it to all file:// URIs.
+  let rootPrincipal = getPrincipalFromURIString("file:///");
+  pm.addFromPrincipal(rootPrincipal, "test/local-files", pm.ALLOW_ACTION, 0, 0);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Giving "file://" a permission shouldn't give it to all file:// URIs.
+  let schemeRootPrincipal = getPrincipalFromURIString("file://");
+  pm.addFromPrincipal(
+    schemeRootPrincipal,
+    "test/local-files",
+    pm.ALLOW_ACTION,
+    0,
+    0
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Giving 'node' a permission shouldn't give it to its 'children'.
+  let fileInDirPrincipal = getPrincipalFromURIString(
+    "file:///foo/bar/foobar.txt"
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(fileInDirPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Revert "file:///foo/bar" permission and check that it has been correctly taken into account.
+  pm.removeFromPrincipal(principal, "test/local-files");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(principal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(witnessPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(fileInDirPrincipal, "test/local-files"),
+    pm.UNKNOWN_ACTION
+  );
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_matches.js b/extensions/permissions/test/unit/test_permmanager_matches.js
new file mode 100644
index 0000000000..937a1ce750
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_matches.js
@@ -0,0 +1,203 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var attrs;
+
+function matches_always(perm, principals) {
+  principals.forEach(principal => {
+    Assert.ok(
+      perm.matches(principal, true),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+    Assert.ok(
+      perm.matches(principal, false),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+  });
+}
+
+function matches_weak(perm, principals) {
+  principals.forEach(principal => {
+    Assert.ok(
+      !perm.matches(principal, true),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+    Assert.ok(
+      perm.matches(principal, false),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+  });
+}
+
+function matches_never(perm, principals) {
+  principals.forEach(principal => {
+    Assert.ok(
+      !perm.matches(principal, true),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+    Assert.ok(
+      !perm.matches(principal, false),
+      "perm: " + perm.principal.origin + ", princ: " + principal.origin
+    );
+  });
+}
+
+function run_test() {
+  // initialize the permission manager service
+  let pm = Services.perms;
+
+  let secMan = Services.scriptSecurityManager;
+
+  // Add some permissions
+  let uri0 = NetUtil.newURI("http://google.com/search?q=foo#hashtag");
+  let uri1 = NetUtil.newURI("http://hangouts.google.com/subdir");
+  let uri2 = NetUtil.newURI("http://google.org/");
+  let uri3 = NetUtil.newURI("https://google.com/some/random/subdirectory");
+  let uri4 = NetUtil.newURI("https://hangouts.google.com/#!/hangout");
+  let uri5 = NetUtil.newURI("http://google.com:8096/");
+
+  let uri0_n = secMan.createContentPrincipal(uri0, {});
+  let uri1_n = secMan.createContentPrincipal(uri1, {});
+  let uri2_n = secMan.createContentPrincipal(uri2, {});
+  let uri3_n = secMan.createContentPrincipal(uri3, {});
+  let uri4_n = secMan.createContentPrincipal(uri4, {});
+  let uri5_n = secMan.createContentPrincipal(uri5, {});
+
+  attrs = { inIsolatedMozBrowser: true };
+  let uri0_y_ = secMan.createContentPrincipal(uri0, attrs);
+  let uri1_y_ = secMan.createContentPrincipal(uri1, attrs);
+  let uri2_y_ = secMan.createContentPrincipal(uri2, attrs);
+  let uri3_y_ = secMan.createContentPrincipal(uri3, attrs);
+  let uri4_y_ = secMan.createContentPrincipal(uri4, attrs);
+  let uri5_y_ = secMan.createContentPrincipal(uri5, attrs);
+
+  attrs = { userContextId: 1 };
+  let uri0_1 = secMan.createContentPrincipal(uri0, attrs);
+  let uri1_1 = secMan.createContentPrincipal(uri1, attrs);
+  let uri2_1 = secMan.createContentPrincipal(uri2, attrs);
+  let uri3_1 = secMan.createContentPrincipal(uri3, attrs);
+  let uri4_1 = secMan.createContentPrincipal(uri4, attrs);
+  let uri5_1 = secMan.createContentPrincipal(uri5, attrs);
+
+  attrs = { firstPartyDomain: "cnn.com" };
+  let uri0_cnn = secMan.createContentPrincipal(uri0, attrs);
+  let uri1_cnn = secMan.createContentPrincipal(uri1, attrs);
+  let uri2_cnn = secMan.createContentPrincipal(uri2, attrs);
+  let uri3_cnn = secMan.createContentPrincipal(uri3, attrs);
+  let uri4_cnn = secMan.createContentPrincipal(uri4, attrs);
+  let uri5_cnn = secMan.createContentPrincipal(uri5, attrs);
+
+  pm.addFromPrincipal(uri0_n, "test/matches", pm.ALLOW_ACTION);
+  let perm_n = pm.getPermissionObject(uri0_n, "test/matches", true);
+  pm.addFromPrincipal(uri0_y_, "test/matches", pm.ALLOW_ACTION);
+  let perm_y_ = pm.getPermissionObject(uri0_y_, "test/matches", true);
+  pm.addFromPrincipal(uri0_1, "test/matches", pm.ALLOW_ACTION);
+  let perm_1 = pm.getPermissionObject(uri0_n, "test/matches", true);
+  pm.addFromPrincipal(uri0_cnn, "test/matches", pm.ALLOW_ACTION);
+  let perm_cnn = pm.getPermissionObject(uri0_n, "test/matches", true);
+
+  matches_always(perm_n, [uri0_n, uri0_1]);
+  matches_weak(perm_n, [uri1_n, uri1_1]);
+  matches_never(perm_n, [
+    uri2_n,
+    uri3_n,
+    uri4_n,
+    uri5_n,
+    uri0_y_,
+    uri1_y_,
+    uri2_y_,
+    uri3_y_,
+    uri4_y_,
+    uri5_y_,
+    uri2_1,
+    uri3_1,
+    uri4_1,
+    uri5_1,
+    uri0_cnn,
+    uri1_cnn,
+    uri2_cnn,
+    uri3_cnn,
+    uri4_cnn,
+    uri5_cnn,
+  ]);
+
+  matches_always(perm_y_, [uri0_y_]);
+  matches_weak(perm_y_, [uri1_y_]);
+  matches_never(perm_y_, [
+    uri2_y_,
+    uri3_y_,
+    uri4_y_,
+    uri5_y_,
+    uri0_n,
+    uri1_n,
+    uri2_n,
+    uri3_n,
+    uri4_n,
+    uri5_n,
+    uri0_1,
+    uri1_1,
+    uri2_1,
+    uri3_1,
+    uri4_1,
+    uri5_1,
+    uri0_cnn,
+    uri1_cnn,
+    uri2_cnn,
+    uri3_cnn,
+    uri4_cnn,
+    uri5_cnn,
+  ]);
+
+  matches_always(perm_1, [uri0_n, uri0_1]);
+  matches_weak(perm_1, [uri1_n, uri1_1]);
+  matches_never(perm_1, [
+    uri2_n,
+    uri3_n,
+    uri4_n,
+    uri5_n,
+    uri0_y_,
+    uri1_y_,
+    uri2_y_,
+    uri3_y_,
+    uri4_y_,
+    uri5_y_,
+    uri2_1,
+    uri3_1,
+    uri4_1,
+    uri5_1,
+    uri0_cnn,
+    uri1_cnn,
+    uri2_cnn,
+    uri3_cnn,
+    uri4_cnn,
+    uri5_cnn,
+  ]);
+
+  matches_always(perm_cnn, [uri0_n, uri0_1]);
+  matches_weak(perm_cnn, [uri1_n, uri1_1]);
+  matches_never(perm_cnn, [
+    uri2_n,
+    uri3_n,
+    uri4_n,
+    uri5_n,
+    uri0_y_,
+    uri1_y_,
+    uri2_y_,
+    uri3_y_,
+    uri4_y_,
+    uri5_y_,
+    uri2_1,
+    uri3_1,
+    uri4_1,
+    uri5_1,
+    uri0_cnn,
+    uri1_cnn,
+    uri2_cnn,
+    uri3_cnn,
+    uri4_cnn,
+    uri5_cnn,
+  ]);
+
+  // Clean up!
+  pm.removeAll();
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_matchesuri.js b/extensions/permissions/test/unit/test_permmanager_matchesuri.js
new file mode 100644
index 0000000000..1218fbf9ca
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_matchesuri.js
@@ -0,0 +1,252 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function matches_always(perm, uris) {
+  uris.forEach(uri => {
+    Assert.ok(
+      perm.matchesURI(uri, true),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+    Assert.ok(
+      perm.matchesURI(uri, false),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+  });
+}
+
+function matches_weak(perm, uris) {
+  uris.forEach(uri => {
+    Assert.ok(
+      !perm.matchesURI(uri, true),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+    Assert.ok(
+      perm.matchesURI(uri, false),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+  });
+}
+
+function matches_never(perm, uris) {
+  uris.forEach(uri => {
+    Assert.ok(
+      !perm.matchesURI(uri, true),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+    Assert.ok(
+      !perm.matchesURI(uri, false),
+      "perm: " + perm.principal.origin + ", URI: " + uri.spec
+    );
+  });
+}
+
+function mk_permission(uri) {
+  let pm = Services.perms;
+
+  let secMan = Services.scriptSecurityManager;
+
+  // Get the permission from the principal!
+  let principal = secMan.createContentPrincipal(uri, {});
+
+  pm.addFromPrincipal(principal, "test/matchesuri", pm.ALLOW_ACTION);
+  let permission = pm.getPermissionObject(principal, "test/matchesuri", true);
+
+  return permission;
+}
+
+function run_test() {
+  // initialize the permission manager service
+  let pm = Services.perms;
+
+  let fileprefix = "file:///";
+  if (Services.appinfo.OS == "WINNT") {
+    // Windows rejects files if they don't have a drive. See Bug 1180870
+    fileprefix += "c:/";
+  }
+
+  // Add some permissions
+  let uri0 = NetUtil.newURI("http://google.com:9091/just/a/path");
+  let uri1 = NetUtil.newURI("http://hangouts.google.com:9091/some/path");
+  let uri2 = NetUtil.newURI("http://google.com:9091/");
+  let uri3 = NetUtil.newURI("http://google.org:9091/");
+  let uri4 = NetUtil.newURI("http://deeper.hangouts.google.com:9091/");
+  let uri5 = NetUtil.newURI("https://google.com/just/a/path");
+  let uri6 = NetUtil.newURI("https://hangouts.google.com");
+  let uri7 = NetUtil.newURI("https://google.com/");
+
+  let fileuri1 = NetUtil.newURI(fileprefix + "a/file/path");
+  let fileuri2 = NetUtil.newURI(fileprefix + "a/file/path/deeper");
+  let fileuri3 = NetUtil.newURI(fileprefix + "a/file/otherpath");
+
+  {
+    let perm = mk_permission(uri0);
+    matches_always(perm, [uri0, uri2]);
+    matches_weak(perm, [uri1, uri4]);
+    matches_never(perm, [uri3, uri5, uri6, uri7, fileuri1, fileuri2, fileuri3]);
+  }
+
+  {
+    let perm = mk_permission(uri1);
+    matches_always(perm, [uri1]);
+    matches_weak(perm, [uri4]);
+    matches_never(perm, [
+      uri0,
+      uri2,
+      uri3,
+      uri5,
+      uri6,
+      uri7,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(uri2);
+    matches_always(perm, [uri0, uri2]);
+    matches_weak(perm, [uri1, uri4]);
+    matches_never(perm, [uri3, uri5, uri6, uri7, fileuri1, fileuri2, fileuri3]);
+  }
+
+  {
+    let perm = mk_permission(uri3);
+    matches_always(perm, [uri3]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri1,
+      uri2,
+      uri4,
+      uri5,
+      uri6,
+      uri7,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(uri4);
+    matches_always(perm, [uri4]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri1,
+      uri2,
+      uri3,
+      uri5,
+      uri6,
+      uri7,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(uri5);
+    matches_always(perm, [uri5, uri7]);
+    matches_weak(perm, [uri6]);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(uri6);
+    matches_always(perm, [uri6]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      uri5,
+      uri7,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(uri7);
+    matches_always(perm, [uri5, uri7]);
+    matches_weak(perm, [uri6]);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      fileuri1,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(fileuri1);
+    matches_always(perm, [fileuri1]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      uri5,
+      uri6,
+      uri7,
+      fileuri2,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(fileuri2);
+    matches_always(perm, [fileuri2]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      uri5,
+      uri6,
+      uri7,
+      fileuri1,
+      fileuri3,
+    ]);
+  }
+
+  {
+    let perm = mk_permission(fileuri3);
+    matches_always(perm, [fileuri3]);
+    matches_weak(perm, []);
+    matches_never(perm, [
+      uri0,
+      uri1,
+      uri2,
+      uri3,
+      uri4,
+      uri5,
+      uri6,
+      uri7,
+      fileuri1,
+      fileuri2,
+    ]);
+  }
+
+  // Clean up!
+  pm.removeAll();
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_10-11.js b/extensions/permissions/test/unit/test_permmanager_migrate_10-11.js
new file mode 100644
index 0000000000..c0d30865ee
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_10-11.js
@@ -0,0 +1,196 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 10;
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  insertOrigin(
+    "https://foo.com",
+    "storageAccessAPI^https://foo.com",
+    2,
+    0,
+    0,
+    0
+  );
+  insertOrigin(
+    "http://foo.com",
+    "storageAccessAPI^https://bar.com^https://foo.com",
+    2,
+    0,
+    0,
+    0
+  );
+  insertOrigin(
+    "http://foo.com",
+    "storageAccessAPI^https://bar.com^https://baz.com",
+    2,
+    0,
+    0,
+    0
+  );
+  insertOrigin("http://foo.com^inBrowser=1", "A", 2, 0, 0, 0);
+
+  // CLose the db connection
+  stmt6Insert.finalize();
+  db.close();
+  db = null;
+
+  let expected = [
+    ["https://foo.com", "storageAccessAPI^https://foo.com", 2, 0, 0, 0],
+    ["http://foo.com", "storageAccessAPI^https://bar.com", 2, 0, 0, 0],
+    ["http://foo.com", "storageAccessAPI^https://bar.com", 2, 0, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 2, 0, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(Services.io.newURI("ftp://127.0.0.1:8080"));
+  await PlacesTestUtils.addVisits(Services.io.newURI("https://localhost:8080"));
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    let mozPermsCount = db.createStatement("SELECT count(*) FROM moz_perms");
+    try {
+      mozPermsCount.executeStep();
+      Assert.equal(mozPermsCount.getInt64(0), expected.length);
+    } finally {
+      mozPermsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_11-12.js b/extensions/permissions/test/unit/test_permmanager_migrate_11-12.js
new file mode 100644
index 0000000000..97170a9240
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_11-12.js
@@ -0,0 +1,230 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 11;
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  insertOrigin("https://a.com", "3rdPartyStorage^https://b.com", 2, 0, 0, 0);
+  insertOrigin(
+    "https://www.a.com",
+    "3rdPartyStorage^https://www.c.com",
+    2,
+    0,
+    0,
+    0
+  );
+  insertOrigin(
+    "https://localhost",
+    "3rdPartyStorage^http://www.c.com",
+    2,
+    0,
+    0,
+    0
+  );
+
+  insertOrigin(
+    "https://www.b.co.uk",
+    "3rdPartyStorage^https://www.a.co.uk",
+    2,
+    0,
+    0,
+    0
+  );
+
+  insertOrigin(
+    "https://sub.www.b.co.uk",
+    "3rdPartyStorage^https://sub.www.a.co.uk",
+    2,
+    0,
+    0,
+    0
+  );
+
+  insertOrigin(
+    "https://example.b.co.uk",
+    "3rdPartyStorage^https://www.a.co.uk",
+    2,
+    0,
+    0,
+    0
+  );
+
+  insertOrigin(
+    "https://[::1]",
+    "3rdPartyStorage^https://www.a.co.uk",
+    2,
+    0,
+    0,
+    0
+  );
+  // Close the db connection
+  stmt6Insert.finalize();
+  db.close();
+  db = null;
+  info(Services.perms.all);
+
+  let expected = [
+    ["https://a.com", "3rdPartyStorage^https://b.com", 2, 0, 0, 0],
+    ["https://a.com", "3rdPartyStorage^https://www.c.com", 2, 0, 0, 0],
+    ["https://localhost", "3rdPartyStorage^http://www.c.com", 2, 0, 0, 0],
+    ["https://b.co.uk", "3rdPartyStorage^https://www.a.co.uk", 2, 0, 0, 0],
+    ["https://b.co.uk", "3rdPartyStorage^https://sub.www.a.co.uk", 2, 0, 0, 0],
+    ["https://[::1]", "3rdPartyStorage^https://www.a.co.uk", 2, 0, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(Services.io.newURI("ftp://127.0.0.1:8080"));
+  await PlacesTestUtils.addVisits(Services.io.newURI("https://localhost:8080"));
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  info(Services.perms.all);
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+  info(expected);
+  info(found);
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    let mozPermsCount = db.createStatement("SELECT count(*) FROM moz_perms");
+    try {
+      mozPermsCount.executeStep();
+      Assert.equal(mozPermsCount.getInt64(0), expected.length);
+    } finally {
+      mozPermsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_4-7.js b/extensions/permissions/test/unit/test_permmanager_migrate_4-7.js
new file mode 100644
index 0000000000..857e0a462c
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_4-7.js
@@ -0,0 +1,264 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 4;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 2000, true),
+    insertHost("sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("subber.sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("bar.ca", "A", 1, 0, 0, 0, 1000, true),
+    insertHost("localhost", "A", 1, 0, 0, 0, 0, false),
+    insertHost("127.0.0.1", "A", 1, 0, 0, 0, 0, false),
+    insertHost("192.0.2.235", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///some/path/to/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///another/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost(
+      "moz-nullprincipal:{8695105a-adbe-4e4e-8083-851faa5ca2d7}",
+      "A",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost(
+      "moz-nullprincipal:{12ahjksd-akjs-asd3-8393-asdu2189asdu}",
+      "B",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost("<file>", "A", 1, 0, 0, 0, 0, false),
+    insertHost("<file>", "B", 1, 0, 0, 0, 0, false),
+  ];
+
+  // CLose the db connection
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    // The http:// entries under foo.com won't be inserted, as there are history entries for foo.com,
+    // and http://foo.com or a subdomain are never visited.
+    // ["http://foo.com", "A", 1, 0, 0],
+    // ["http://foo.com^inBrowser=1", "A", 1, 0, 0],
+    //
+    // Because we search for port/scheme combinations under eTLD+1, we should not have http:// entries
+    // for subdomains of foo.com either
+    // ["http://sub.foo.com", "B", 1, 0, 0],
+    // ["http://subber.sub.foo.com", "B", 1, 0, 0],
+
+    ["https://foo.com", "A", 1, 0, 0],
+    ["https://foo.com", "C", 1, 0, 0],
+    ["https://foo.com^inBrowser=1", "A", 1, 0, 0],
+    ["https://sub.foo.com", "B", 1, 0, 0],
+    ["https://subber.sub.foo.com", "B", 1, 0, 0],
+
+    // bar.ca will have both http:// and https:// for all entries, because there are no associated history entries
+    ["http://bar.ca", "B", 1, 0, 0],
+    ["https://bar.ca", "B", 1, 0, 0],
+    ["http://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["https://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["file:///some/path/to/file.html", "A", 1, 0, 0],
+    ["file:///another/file.html", "A", 1, 0, 0],
+
+    // Because we put ftp://some.subdomain.of.foo.com:8000/some/subdirectory in the history, we should
+    // also have these entries
+    ["ftp://foo.com:8000", "A", 1, 0, 0],
+    ["ftp://foo.com:8000", "C", 1, 0, 0],
+    ["ftp://foo.com:8000^inBrowser=1", "A", 1, 0, 0],
+
+    // In addition, because we search for port/scheme combinations under eTLD+1, we should have the
+    // following entries
+    ["ftp://sub.foo.com:8000", "B", 1, 0, 0],
+    ["ftp://subber.sub.foo.com:8000", "B", 1, 0, 0],
+
+    // Make sure that we also support localhost, and IP addresses
+    ["http://localhost", "A", 1, 0, 0],
+    ["https://localhost", "A", 1, 0, 0],
+    ["http://127.0.0.1", "A", 1, 0, 0],
+    ["https://127.0.0.1", "A", 1, 0, 0],
+    ["http://192.0.2.235", "A", 1, 0, 0],
+    ["https://192.0.2.235", "A", 1, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    // The moz_hosts table should still exist but be empty
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_4-7_no_history.js b/extensions/permissions/test/unit/test_permmanager_migrate_4-7_no_history.js
new file mode 100644
index 0000000000..aa735e534a
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_4-7_no_history.js
@@ -0,0 +1,279 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+/*
+ * Prevent the nsINavHistoryService from being avaliable for the migration
+ */
+
+var CONTRACT_ID = "@mozilla.org/browser/nav-history-service;1";
+var factory = {
+  createInstance() {
+    throw new Error("There is no history service");
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsIFactory"]),
+};
+
+var newClassID = Services.uuid.generateUUID();
+
+var registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+var oldClassID = registrar.contractIDToCID(CONTRACT_ID);
+// TODO: There was a var oldFactory = here causing linter errors as it
+// was unused. We should check if this function call is needed at all.
+Components.manager.getClassObject(Cc[CONTRACT_ID], Ci.nsIFactory);
+registrar.registerFactory(newClassID, "", CONTRACT_ID, factory);
+
+function cleanupFactory() {
+  registrar.unregisterFactory(newClassID, factory);
+  registrar.registerFactory(oldClassID, "", CONTRACT_ID, null);
+}
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+/*
+ * Done nsINavHistoryService code
+ */
+
+add_task(function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // Make sure that we can't resolve the nsINavHistoryService
+  try {
+    Cc["@mozilla.org/browser/nav-history-service;1"].getService(
+      Ci.nsINavHistoryService
+    );
+    Assert.ok(false, "There shouldn't have been a nsINavHistoryService");
+  } catch (e) {
+    Assert.ok(true, "There wasn't a nsINavHistoryService");
+  }
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.ok(pm.all.length >= 0, "Permission manager not initialized?");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 4;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 2000, true),
+    insertHost("sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("subber.sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("bar.ca", "A", 1, 0, 0, 0, 1000, true),
+    insertHost("localhost", "A", 1, 0, 0, 0, 0, false),
+    insertHost("127.0.0.1", "A", 1, 0, 0, 0, 0, false),
+    insertHost("263.123.555.676", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///some/path/to/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///another/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost(
+      "moz-nullprincipal:{8695105a-adbe-4e4e-8083-851faa5ca2d7}",
+      "A",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost(
+      "moz-nullprincipal:{12ahjksd-akjs-asd3-8393-asdu2189asdu}",
+      "B",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost("<file>", "A", 1, 0, 0, 0, 0, false),
+    insertHost("<file>", "B", 1, 0, 0, 0, 0, false),
+  ];
+
+  // CLose the db connection
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    ["http://foo.com", "A", 1, 0, 0],
+    ["http://foo.com", "C", 1, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 1, 0, 0],
+    ["http://sub.foo.com", "B", 1, 0, 0],
+    ["http://subber.sub.foo.com", "B", 1, 0, 0],
+
+    ["https://foo.com", "A", 1, 0, 0],
+    ["https://foo.com", "C", 1, 0, 0],
+    ["https://foo.com^inBrowser=1", "A", 1, 0, 0],
+    ["https://sub.foo.com", "B", 1, 0, 0],
+    ["https://subber.sub.foo.com", "B", 1, 0, 0],
+
+    // bar.ca will have both http:// and https:// for all entries, because there are no associated history entries
+    ["http://bar.ca", "B", 1, 0, 0],
+    ["https://bar.ca", "B", 1, 0, 0],
+    ["http://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["https://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["file:///some/path/to/file.html", "A", 1, 0, 0],
+    ["file:///another/file.html", "A", 1, 0, 0],
+
+    // Make sure that we also support localhost, and IP addresses
+    ["http://localhost", "A", 1, 0, 0],
+    ["https://localhost", "A", 1, 0, 0],
+    ["http://127.0.0.1", "A", 1, 0, 0],
+    ["https://127.0.0.1", "A", 1, 0, 0],
+    ["http://263.123.555.676", "A", 1, 0, 0],
+    ["https://263.123.555.676", "A", 1, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    // The moz_hosts table should still exist but be empty
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    db.close();
+  }
+
+  cleanupFactory();
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_5-7a.js b/extensions/permissions/test/unit/test_permmanager_migrate_5-7a.js
new file mode 100644
index 0000000000..8ea03d5e16
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_5-7a.js
@@ -0,0 +1,365 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 5;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  /*
+   * V5 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt5Insert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  /*
+   * V4 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts_v4 (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts_v4 (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt5Insert.bindByName("id", thisId);
+    stmt5Insert.bindByName("origin", origin);
+    stmt5Insert.bindByName("type", type);
+    stmt5Insert.bindByName("permission", permission);
+    stmt5Insert.bindByName("expireType", expireType);
+    stmt5Insert.bindByName("expireTime", expireTime);
+    stmt5Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt5Insert.execute();
+    } finally {
+      stmt5Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+
+  let created5 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^inBrowser=1", "A", 2, 0, 0, 0),
+  ];
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 2000, true),
+    insertHost("sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("subber.sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("bar.ca", "A", 1, 0, 0, 0, 1000, true),
+    insertHost("localhost", "A", 1, 0, 0, 0, 0, false),
+    insertHost("127.0.0.1", "A", 1, 0, 0, 0, 0, false),
+    insertHost("192.0.2.235", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///some/path/to/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///another/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost(
+      "moz-nullprincipal:{8695105a-adbe-4e4e-8083-851faa5ca2d7}",
+      "A",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost(
+      "moz-nullprincipal:{12ahjksd-akjs-asd3-8393-asdu2189asdu}",
+      "B",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost("<file>", "A", 1, 0, 0, 0, 0, false),
+    insertHost("<file>", "B", 1, 0, 0, 0, 0, false),
+  ];
+
+  // CLose the db connection
+  stmt5Insert.finalize();
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    // The http:// entries under foo.com won't be inserted, as there are history entries for foo.com,
+    // and http://foo.com or a subdomain are never visited.
+    // ["http://foo.com", "A", 1, 0, 0],
+    // ["http://foo.com^inBrowser=1", "A", 1, 0, 0],
+    //
+    // Because we search for port/scheme combinations under eTLD+1, we should not have http:// entries
+    // for subdomains of foo.com either
+    // ["http://sub.foo.com", "B", 1, 0, 0],
+    // ["http://subber.sub.foo.com", "B", 1, 0, 0],
+
+    ["https://foo.com", "A", 1, 0, 0],
+    ["https://foo.com", "C", 1, 0, 0],
+    ["https://foo.com^inBrowser=1", "A", 1, 0, 0],
+    ["https://sub.foo.com", "B", 1, 0, 0],
+    ["https://subber.sub.foo.com", "B", 1, 0, 0],
+
+    // bar.ca will have both http:// and https:// for all entries, because there are no associated history entries
+    ["http://bar.ca", "B", 1, 0, 0],
+    ["https://bar.ca", "B", 1, 0, 0],
+    ["http://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["https://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["file:///some/path/to/file.html", "A", 1, 0, 0],
+    ["file:///another/file.html", "A", 1, 0, 0],
+
+    // Because we put ftp://some.subdomain.of.foo.com:8000/some/subdirectory in the history, we should
+    // also have these entries
+    ["ftp://foo.com:8000", "A", 1, 0, 0],
+    ["ftp://foo.com:8000", "C", 1, 0, 0],
+    ["ftp://foo.com:8000^inBrowser=1", "A", 1, 0, 0],
+
+    // In addition, because we search for port/scheme combinations under eTLD+1, we should have the
+    // following entries
+    ["ftp://sub.foo.com:8000", "B", 1, 0, 0],
+    ["ftp://subber.sub.foo.com:8000", "B", 1, 0, 0],
+
+    // Make sure that we also support localhost, and IP addresses
+    ["http://localhost", "A", 1, 0, 0],
+    ["https://localhost", "A", 1, 0, 0],
+    ["http://127.0.0.1", "A", 1, 0, 0],
+    ["https://127.0.0.1", "A", 1, 0, 0],
+    ["http://192.0.2.235", "A", 1, 0, 0],
+    ["https://192.0.2.235", "A", 1, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(db.tableExists("moz_perms_v6"));
+
+    // The moz_hosts table should still exist but be empty
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    // Check that the moz_perms_v6 table contains the backup of the entry we created
+    let mozPermsV6Stmt = db.createStatement(
+      "SELECT " +
+        "origin, type, permission, expireType, expireTime, modificationTime " +
+        "FROM moz_perms_v6 WHERE id = :id"
+    );
+    try {
+      // Check that the moz_hosts table still contains the correct values.
+      created5.forEach(it => {
+        mozPermsV6Stmt.reset();
+        mozPermsV6Stmt.bindByName("id", it.id);
+        mozPermsV6Stmt.executeStep();
+        Assert.equal(mozPermsV6Stmt.getUTF8String(0), it.origin);
+        Assert.equal(mozPermsV6Stmt.getUTF8String(1), it.type);
+        Assert.equal(mozPermsV6Stmt.getInt64(2), it.permission);
+        Assert.equal(mozPermsV6Stmt.getInt64(3), it.expireType);
+        Assert.equal(mozPermsV6Stmt.getInt64(4), it.expireTime);
+        Assert.equal(mozPermsV6Stmt.getInt64(5), it.modificationTime);
+      });
+    } finally {
+      mozPermsV6Stmt.finalize();
+    }
+
+    // Check that there are the right number of values
+    let mozPermsV6Count = db.createStatement(
+      "SELECT count(*) FROM moz_perms_v6"
+    );
+    try {
+      mozPermsV6Count.executeStep();
+      Assert.equal(mozPermsV6Count.getInt64(0), created5.length);
+    } finally {
+      mozPermsV6Count.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_5-7b.js b/extensions/permissions/test/unit/test_permmanager_migrate_5-7b.js
new file mode 100644
index 0000000000..8c330effa9
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_5-7b.js
@@ -0,0 +1,203 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 5;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  /*
+   * V5 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt5Insert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  let id = 0;
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt5Insert.bindByName("id", thisId);
+    stmt5Insert.bindByName("origin", origin);
+    stmt5Insert.bindByName("type", type);
+    stmt5Insert.bindByName("permission", permission);
+    stmt5Insert.bindByName("expireType", expireType);
+    stmt5Insert.bindByName("expireTime", expireTime);
+    stmt5Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt5Insert.execute();
+    } finally {
+      stmt5Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      host: origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  // eslint-disable-next-line no-unused-vars
+  let created5 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^appId=1000&inBrowser=1", "A", 2, 0, 0, 0),
+
+    insertOrigin("http://127.0.0.1", "B", 2, 0, 0, 0),
+    insertOrigin("http://localhost", "B", 2, 0, 0, 0),
+  ];
+
+  let created4 = []; // Didn't create any v4 entries, so the DB should be empty
+
+  // CLose the db connection
+  stmt5Insert.finalize();
+  db.close();
+  stmt5Insert = null;
+  db = null;
+
+  let expected = [
+    ["https://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 2, 0, 0, 0],
+
+    ["http://127.0.0.1", "B", 2, 0, 0, 0],
+    ["http://localhost", "B", 2, 0, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    let mozHostsStmt = db.createStatement(
+      "SELECT " +
+        "host, type, permission, expireType, expireTime, " +
+        "modificationTime, isInBrowserElement " +
+        "FROM moz_hosts WHERE id = :id"
+    );
+    try {
+      // Check that the moz_hosts table still contains the correct values.
+      created4.forEach(it => {
+        mozHostsStmt.reset();
+        mozHostsStmt.bindByName("id", it.id);
+        mozHostsStmt.executeStep();
+        Assert.equal(mozHostsStmt.getUTF8String(0), it.host);
+        Assert.equal(mozHostsStmt.getUTF8String(1), it.type);
+        Assert.equal(mozHostsStmt.getInt64(2), it.permission);
+        Assert.equal(mozHostsStmt.getInt64(3), it.expireType);
+        Assert.equal(mozHostsStmt.getInt64(4), it.expireTime);
+        Assert.equal(mozHostsStmt.getInt64(5), it.modificationTime);
+        Assert.equal(mozHostsStmt.getInt64(6), it.isInBrowserElement);
+      });
+    } finally {
+      mozHostsStmt.finalize();
+    }
+
+    // Check that there are the right number of values
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), created4.length);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_6-7a.js b/extensions/permissions/test/unit/test_permmanager_migrate_6-7a.js
new file mode 100644
index 0000000000..93b78e6478
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_6-7a.js
@@ -0,0 +1,366 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 6;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  /*
+   * V5 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_perms (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  /*
+   * V4 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+
+  let created6 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^inBrowser=1", "A", 2, 0, 0, 0),
+  ];
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 2000, true),
+    insertHost("sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("subber.sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("bar.ca", "A", 1, 0, 0, 0, 1000, true),
+    insertHost("localhost", "A", 1, 0, 0, 0, 0, false),
+    insertHost("127.0.0.1", "A", 1, 0, 0, 0, 0, false),
+    insertHost("192.0.2.235", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///some/path/to/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///another/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost(
+      "moz-nullprincipal:{8695105a-adbe-4e4e-8083-851faa5ca2d7}",
+      "A",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost(
+      "moz-nullprincipal:{12ahjksd-akjs-asd3-8393-asdu2189asdu}",
+      "B",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost("<file>", "A", 1, 0, 0, 0, 0, false),
+    insertHost("<file>", "B", 1, 0, 0, 0, 0, false),
+  ];
+
+  // CLose the db connection
+  stmt6Insert.finalize();
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    // The http:// entries under foo.com won't be inserted, as there are history entries for foo.com,
+    // and http://foo.com or a subdomain are never visited.
+    // ["http://foo.com", "A", 1, 0, 0],
+    // ["http://foo.com^inBrowser=1", "A", 1, 0, 0],
+    //
+    // Because we search for port/scheme combinations under eTLD+1, we should not have http:// entries
+    // for subdomains of foo.com either
+    // ["http://sub.foo.com", "B", 1, 0, 0],
+    // ["http://subber.sub.foo.com", "B", 1, 0, 0],
+
+    ["https://foo.com", "A", 1, 0, 0],
+    ["https://foo.com", "C", 1, 0, 0],
+    ["https://foo.com^inBrowser=1", "A", 1, 0, 0],
+    ["https://sub.foo.com", "B", 1, 0, 0],
+    ["https://subber.sub.foo.com", "B", 1, 0, 0],
+
+    // bar.ca will have both http:// and https:// for all entries, because there are no associated history entries
+    ["http://bar.ca", "B", 1, 0, 0],
+    ["https://bar.ca", "B", 1, 0, 0],
+    ["http://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["https://bar.ca^inBrowser=1", "A", 1, 0, 0],
+    ["file:///some/path/to/file.html", "A", 1, 0, 0],
+    ["file:///another/file.html", "A", 1, 0, 0],
+
+    // Because we put ftp://some.subdomain.of.foo.com:8000/some/subdirectory in the history, we should
+    // also have these entries
+    ["ftp://foo.com:8000", "A", 1, 0, 0],
+    ["ftp://foo.com:8000", "C", 1, 0, 0],
+    ["ftp://foo.com:8000^inBrowser=1", "A", 1, 0, 0],
+
+    // In addition, because we search for port/scheme combinations under eTLD+1, we should have the
+    // following entries
+    ["ftp://sub.foo.com:8000", "B", 1, 0, 0],
+    ["ftp://subber.sub.foo.com:8000", "B", 1, 0, 0],
+
+    // Make sure that we also support localhost, and IP addresses
+    ["http://localhost", "A", 1, 0, 0],
+    ["https://localhost", "A", 1, 0, 0],
+    ["http://127.0.0.1", "A", 1, 0, 0],
+    ["https://127.0.0.1", "A", 1, 0, 0],
+    ["http://192.0.2.235", "A", 1, 0, 0],
+    ["https://192.0.2.235", "A", 1, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(db.tableExists("moz_perms_v6"));
+
+    // The moz_hosts table should still exist but be empty
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    // Check that the moz_perms_v6 table contains the backup of the entry we created
+    let mozPermsV6Stmt = db.createStatement(
+      "SELECT " +
+        "origin, type, permission, expireType, expireTime, modificationTime " +
+        "FROM moz_perms_v6 WHERE id = :id"
+    );
+    try {
+      // Check that the moz_hosts table still contains the correct values.
+      created6.forEach(it => {
+        mozPermsV6Stmt.reset();
+        mozPermsV6Stmt.bindByName("id", it.id);
+        mozPermsV6Stmt.executeStep();
+        Assert.equal(mozPermsV6Stmt.getUTF8String(0), it.origin);
+        Assert.equal(mozPermsV6Stmt.getUTF8String(1), it.type);
+        Assert.equal(mozPermsV6Stmt.getInt64(2), it.permission);
+        Assert.equal(mozPermsV6Stmt.getInt64(3), it.expireType);
+        Assert.equal(mozPermsV6Stmt.getInt64(4), it.expireTime);
+        Assert.equal(mozPermsV6Stmt.getInt64(5), it.modificationTime);
+      });
+    } finally {
+      mozPermsV6Stmt.finalize();
+    }
+
+    // Check that there are the right number of values
+    let mozPermsV6Count = db.createStatement(
+      "SELECT count(*) FROM moz_perms_v6"
+    );
+    try {
+      mozPermsV6Count.executeStep();
+      Assert.equal(mozPermsV6Count.getInt64(0), created6.length);
+    } finally {
+      mozPermsV6Count.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_6-7b.js b/extensions/permissions/test/unit/test_permmanager_migrate_6-7b.js
new file mode 100644
index 0000000000..feed156d29
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_6-7b.js
@@ -0,0 +1,199 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 6;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  /*
+   * V5 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_perms (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  let id = 0;
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      host: origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  // eslint-disable-next-line no-unused-vars
+  let created6 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^appId=1000&inBrowser=1", "A", 2, 0, 0, 0),
+  ];
+
+  let created4 = []; // Didn't create any v4 entries, so the DB should be empty
+
+  // CLose the db connection
+  stmt6Insert.finalize();
+  db.close();
+  stmt6Insert = null;
+  db = null;
+
+  let expected = [
+    ["https://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 2, 0, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    let mozHostsStmt = db.createStatement(
+      "SELECT " +
+        "host, type, permission, expireType, expireTime, " +
+        "modificationTime, isInBrowserElement " +
+        "FROM moz_hosts WHERE id = :id"
+    );
+    try {
+      // Check that the moz_hosts table still contains the correct values.
+      created4.forEach(it => {
+        mozHostsStmt.reset();
+        mozHostsStmt.bindByName("id", it.id);
+        mozHostsStmt.executeStep();
+        Assert.equal(mozHostsStmt.getUTF8String(0), it.host);
+        Assert.equal(mozHostsStmt.getUTF8String(1), it.type);
+        Assert.equal(mozHostsStmt.getInt64(2), it.permission);
+        Assert.equal(mozHostsStmt.getInt64(3), it.expireType);
+        Assert.equal(mozHostsStmt.getInt64(4), it.expireTime);
+        Assert.equal(mozHostsStmt.getInt64(5), it.modificationTime);
+        Assert.equal(mozHostsStmt.getInt64(6), it.isInBrowserElement);
+      });
+    } finally {
+      mozHostsStmt.finalize();
+    }
+
+    // Check that there are the right number of values
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), created4.length);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_7-8.js b/extensions/permissions/test/unit/test_permmanager_migrate_7-8.js
new file mode 100644
index 0000000000..cd8b0f86cc
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_7-8.js
@@ -0,0 +1,328 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 7;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE moz_hosts");
+
+  /*
+   * V5 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_perms (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  /*
+   * V4 table
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  /*
+   * The v4 table is a backup
+   */
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts_is_backup (dummy INTEGER PRIMARY KEY)"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+  // eslint-disable-next-line no-unused-vars
+  let created7 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^inBrowser=1", "A", 2, 0, 0, 0),
+    insertOrigin("https://192.0.2.235", "A", 2, 0, 0),
+  ];
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "A", 1, 0, 0, 0, 2000, true),
+    insertHost("sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("subber.sub.foo.com", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 0, false),
+    insertHost("bar.ca", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("bar.ca", "A", 1, 0, 0, 0, 1000, true),
+    insertHost("localhost", "A", 1, 0, 0, 0, 0, false),
+    insertHost("127.0.0.1", "A", 1, 0, 0, 0, 0, false),
+    insertHost("192.0.2.235", "A", 1, 0, 0, 0, 0, false),
+    // Although ipv6 addresses are written with [] around the IP address,
+    // the .host property doesn't contain these []s, which means that we
+    // write it like this
+    insertHost("2001:db8::ff00:42:8329", "C", 1, 0, 0, 0, 0, false),
+    insertHost("file:///some/path/to/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost("file:///another/file.html", "A", 1, 0, 0, 0, 0, false),
+    insertHost(
+      "moz-nullprincipal:{8695105a-adbe-4e4e-8083-851faa5ca2d7}",
+      "A",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost(
+      "moz-nullprincipal:{12ahjksd-akjs-asd3-8393-asdu2189asdu}",
+      "B",
+      1,
+      0,
+      0,
+      0,
+      0,
+      false
+    ),
+    insertHost("<file>", "A", 1, 0, 0, 0, 0, false),
+    insertHost("<file>", "B", 1, 0, 0, 0, 0, false),
+  ];
+
+  // CLose the db connection
+  stmt6Insert.finalize();
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    // We should have kept the previously migrated entries
+    ["https://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 2, 0, 0, 0],
+
+    // Make sure that we also support localhost, and IP addresses
+    ["https://localhost:8080", "A", 1, 0, 0],
+    ["ftp://127.0.0.1:8080", "A", 1, 0, 0],
+
+    ["http://[2001:db8::ff00:42:8329]", "C", 1, 0, 0],
+    ["https://[2001:db8::ff00:42:8329]", "C", 1, 0, 0],
+    ["http://192.0.2.235", "A", 1, 0, 0],
+
+    // There should only be one entry of this type in the database
+    ["https://192.0.2.235", "A", 2, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(Services.io.newURI("ftp://127.0.0.1:8080"));
+  await PlacesTestUtils.addVisits(Services.io.newURI("https://localhost:8080"));
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_hosts_is_backup"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    // The moz_hosts table should still exist but be empty
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 0);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    // Check that there are the right number of values in the permissions database
+    let mozPermsCount = db.createStatement("SELECT count(*) FROM moz_perms");
+    try {
+      mozPermsCount.executeStep();
+      Assert.equal(mozPermsCount.getInt64(0), expected.length);
+    } finally {
+      mozPermsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_migrate_9-10.js b/extensions/permissions/test/unit/test_permmanager_migrate_9-10.js
new file mode 100644
index 0000000000..02aa3bb467
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_migrate_9-10.js
@@ -0,0 +1,262 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+var PERMISSIONS_FILE_NAME = "permissions.sqlite";
+
+function GetPermissionsFile(profile) {
+  let file = profile.clone();
+  file.append(PERMISSIONS_FILE_NAME);
+  return file;
+}
+
+add_task(async function test() {
+  // Create and set up the permissions database.
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  let profile = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.equal(pm.all.length, 0, "No cookies");
+
+  let db = Services.storage.openDatabase(GetPermissionsFile(profile));
+  db.schemaVersion = 9;
+  db.executeSimpleSQL("DROP TABLE moz_perms");
+  db.executeSimpleSQL("DROP TABLE IF EXISTS moz_hosts");
+
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_perms (" +
+      " id INTEGER PRIMARY KEY" +
+      ",origin TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ")"
+  );
+
+  let stmt6Insert = db.createStatement(
+    "INSERT INTO moz_perms (" +
+      "id, origin, type, permission, expireType, expireTime, modificationTime" +
+      ") VALUES (" +
+      ":id, :origin, :type, :permission, :expireType, :expireTime, :modificationTime" +
+      ")"
+  );
+
+  db.executeSimpleSQL(
+    "CREATE TABLE moz_hosts (" +
+      " id INTEGER PRIMARY KEY" +
+      ",host TEXT" +
+      ",type TEXT" +
+      ",permission INTEGER" +
+      ",expireType INTEGER" +
+      ",expireTime INTEGER" +
+      ",modificationTime INTEGER" +
+      ",appId INTEGER" +
+      ",isInBrowserElement INTEGER" +
+      ")"
+  );
+
+  let stmtInsert = db.createStatement(
+    "INSERT INTO moz_hosts (" +
+      "id, host, type, permission, expireType, expireTime, modificationTime, appId, isInBrowserElement" +
+      ") VALUES (" +
+      ":id, :host, :type, :permission, :expireType, :expireTime, :modificationTime, :appId, :isInBrowserElement" +
+      ")"
+  );
+
+  let id = 0;
+
+  function insertOrigin(
+    origin,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime
+  ) {
+    let thisId = id++;
+
+    stmt6Insert.bindByName("id", thisId);
+    stmt6Insert.bindByName("origin", origin);
+    stmt6Insert.bindByName("type", type);
+    stmt6Insert.bindByName("permission", permission);
+    stmt6Insert.bindByName("expireType", expireType);
+    stmt6Insert.bindByName("expireTime", expireTime);
+    stmt6Insert.bindByName("modificationTime", modificationTime);
+
+    try {
+      stmt6Insert.execute();
+    } finally {
+      stmt6Insert.reset();
+    }
+
+    return {
+      id: thisId,
+      origin,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+    };
+  }
+
+  function insertHost(
+    host,
+    type,
+    permission,
+    expireType,
+    expireTime,
+    modificationTime,
+    appId,
+    isInBrowserElement
+  ) {
+    let thisId = id++;
+
+    stmtInsert.bindByName("id", thisId);
+    stmtInsert.bindByName("host", host);
+    stmtInsert.bindByName("type", type);
+    stmtInsert.bindByName("permission", permission);
+    stmtInsert.bindByName("expireType", expireType);
+    stmtInsert.bindByName("expireTime", expireTime);
+    stmtInsert.bindByName("modificationTime", modificationTime);
+    stmtInsert.bindByName("appId", appId);
+    stmtInsert.bindByName("isInBrowserElement", isInBrowserElement);
+
+    try {
+      stmtInsert.execute();
+    } finally {
+      stmtInsert.reset();
+    }
+
+    return {
+      id: thisId,
+      host,
+      type,
+      permission,
+      expireType,
+      expireTime,
+      modificationTime,
+      appId,
+      isInBrowserElement,
+    };
+  }
+  // eslint-disable-next-line no-unused-vars
+  let created7 = [
+    insertOrigin("https://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com", "A", 2, 0, 0, 0),
+    insertOrigin("http://foo.com^inBrowser=1", "A", 2, 0, 0, 0),
+  ];
+
+  // Add some rows to the database
+  // eslint-disable-next-line no-unused-vars
+  let created = [
+    insertHost("foo.com", "A", 1, 0, 0, 0, 0, false),
+    insertHost("foo.com", "B", 1, 0, 0, 0, 1000, false),
+    insertHost("foo.com", "C", 1, 0, 0, 0, 2000, true),
+  ];
+
+  // CLose the db connection
+  stmt6Insert.finalize();
+  stmtInsert.finalize();
+  db.close();
+  stmtInsert = null;
+  db = null;
+
+  let expected = [
+    ["https://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com", "A", 2, 0, 0, 0],
+    ["http://foo.com^inBrowser=1", "A", 2, 0, 0, 0],
+  ];
+
+  let found = expected.map(it => 0);
+
+  // Add some places to the places database
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("https://foo.com/some/other/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(
+    Services.io.newURI("ftp://some.subdomain.of.foo.com:8000/some/subdirectory")
+  );
+  await PlacesTestUtils.addVisits(Services.io.newURI("ftp://127.0.0.1:8080"));
+  await PlacesTestUtils.addVisits(Services.io.newURI("https://localhost:8080"));
+
+  // This will force the permission-manager to reload the data.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Force initialization of the PermissionManager
+  for (let permission of Services.perms.all) {
+    let isExpected = false;
+
+    expected.forEach((it, i) => {
+      if (
+        permission.principal.origin == it[0] &&
+        permission.type == it[1] &&
+        permission.capability == it[2] &&
+        permission.expireType == it[3] &&
+        permission.expireTime == it[4]
+      ) {
+        isExpected = true;
+        found[i]++;
+      }
+    });
+
+    Assert.ok(
+      isExpected,
+      "Permission " +
+        (isExpected ? "should" : "shouldn't") +
+        " be in permission database: " +
+        permission.principal.origin +
+        ", " +
+        permission.type +
+        ", " +
+        permission.capability +
+        ", " +
+        permission.expireType +
+        ", " +
+        permission.expireTime
+    );
+  }
+
+  found.forEach((count, i) => {
+    Assert.ok(
+      count == 1,
+      "Expected count = 1, got count = " +
+        count +
+        " for permission " +
+        expected[i]
+    );
+  });
+
+  // Check to make sure that all of the tables which we care about are present
+  {
+    db = Services.storage.openDatabase(GetPermissionsFile(profile));
+    Assert.ok(db.tableExists("moz_perms"));
+    Assert.ok(db.tableExists("moz_hosts"));
+    Assert.ok(!db.tableExists("moz_perms_v6"));
+
+    let mozHostsCount = db.createStatement("SELECT count(*) FROM moz_hosts");
+    try {
+      mozHostsCount.executeStep();
+      Assert.equal(mozHostsCount.getInt64(0), 3);
+    } finally {
+      mozHostsCount.finalize();
+    }
+
+    let mozPermsCount = db.createStatement("SELECT count(*) FROM moz_perms");
+    try {
+      mozPermsCount.executeStep();
+      Assert.equal(mozPermsCount.getInt64(0), expected.length);
+    } finally {
+      mozPermsCount.finalize();
+    }
+
+    db.close();
+  }
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_notifications.js b/extensions/permissions/test/unit/test_permmanager_notifications.js
new file mode 100644
index 0000000000..fb851aa04b
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_notifications.js
@@ -0,0 +1,139 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the permissionmanager 'added', 'changed', 'deleted', and 'cleared'
+// notifications behave as expected.
+
+var test_generator = do_run_test();
+
+function run_test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  do_test_pending();
+  test_generator.next();
+}
+
+function* do_run_test() {
+  let pm = Services.perms;
+  let now = Number(Date.now());
+  let permType = "test/expiration-perm";
+  let ssm = Services.scriptSecurityManager;
+  let uri = NetUtil.newURI("http://example.com");
+  let principal = ssm.createContentPrincipal(uri, {});
+
+  let observer = new permission_observer(test_generator, now, permType);
+  Services.obs.addObserver(observer, "perm-changed");
+
+  // Add a permission, to test the 'add' notification. Note that we use
+  // do_execute_soon() so that we can use our generator to continue the test
+  // where we left off.
+  executeSoon(function () {
+    pm.addFromPrincipal(
+      principal,
+      permType,
+      pm.ALLOW_ACTION,
+      pm.EXPIRE_TIME,
+      now + 100000
+    );
+  });
+  yield;
+
+  // Alter a permission, to test the 'changed' notification.
+  executeSoon(function () {
+    pm.addFromPrincipal(
+      principal,
+      permType,
+      pm.ALLOW_ACTION,
+      pm.EXPIRE_TIME,
+      now + 200000
+    );
+  });
+  yield;
+
+  // Remove a permission, to test the 'deleted' notification.
+  executeSoon(function () {
+    pm.removeFromPrincipal(principal, permType);
+  });
+  yield;
+
+  // Clear permissions, to test the 'cleared' notification.
+  executeSoon(function () {
+    pm.removeAll();
+  });
+  yield;
+
+  Services.obs.removeObserver(observer, "perm-changed");
+  Assert.equal(observer.adds, 1);
+  Assert.equal(observer.changes, 1);
+  Assert.equal(observer.deletes, 1);
+  Assert.ok(observer.cleared);
+
+  do_finish_generator_test(test_generator);
+}
+
+function permission_observer(generator, now, type) {
+  // Set up our observer object.
+  this.generator = generator;
+  this.pm = Services.perms;
+  this.now = now;
+  this.type = type;
+  this.adds = 0;
+  this.changes = 0;
+  this.deletes = 0;
+  this.cleared = false;
+}
+
+permission_observer.prototype = {
+  observe(subject, topic, data) {
+    Assert.equal(topic, "perm-changed");
+
+    // "deleted" means a permission was deleted. aPermission is the deleted permission.
+    // "added"   means a permission was added. aPermission is the added permission.
+    // "changed" means a permission was altered. aPermission is the new permission.
+    // "cleared" means the entire permission list was cleared. aPermission is null.
+    if (data == "added") {
+      let perm = subject.QueryInterface(Ci.nsIPermission);
+      this.adds++;
+      switch (this.adds) {
+        case 1:
+          Assert.equal(this.type, perm.type);
+          Assert.equal(this.pm.EXPIRE_TIME, perm.expireType);
+          Assert.equal(this.now + 100000, perm.expireTime);
+          break;
+        default:
+          do_throw("too many add notifications posted.");
+      }
+    } else if (data == "changed") {
+      let perm = subject.QueryInterface(Ci.nsIPermission);
+      this.changes++;
+      switch (this.changes) {
+        case 1:
+          Assert.equal(this.type, perm.type);
+          Assert.equal(this.pm.EXPIRE_TIME, perm.expireType);
+          Assert.equal(this.now + 200000, perm.expireTime);
+          break;
+        default:
+          do_throw("too many change notifications posted.");
+      }
+    } else if (data == "deleted") {
+      let perm = subject.QueryInterface(Ci.nsIPermission);
+      this.deletes++;
+      switch (this.deletes) {
+        case 1:
+          Assert.equal(this.type, perm.type);
+          break;
+        default:
+          do_throw("too many delete notifications posted.");
+      }
+    } else if (data == "cleared") {
+      // only clear once: at the end
+      Assert.ok(!this.cleared);
+      Assert.equal(do_count_array(Services.perms.all), 0);
+      this.cleared = true;
+    } else {
+      do_throw("unexpected data '" + data + "'!");
+    }
+
+    // Continue the test.
+    do_run_generator(this.generator);
+  },
+};
diff --git a/extensions/permissions/test/unit/test_permmanager_oa_strip.js b/extensions/permissions/test/unit/test_permmanager_oa_strip.js
new file mode 100644
index 0000000000..d6c15bd807
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_oa_strip.js
@@ -0,0 +1,220 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const TEST_URI = Services.io.newURI("http://example.com");
+const TEST_PERMISSION = "test/oastrip";
+const TEST_PERMISSION2 = "test/oastrip2";
+const TEST_PERMISSION3 = "test/oastrip3";
+
+// List of permissions which are not isolated by private browsing or user context
+// as per array kStripOAPermissions in PermissionManager.cpp
+const STRIPPED_PERMS = ["cookie"];
+
+let principal = Services.scriptSecurityManager.createContentPrincipal(
+  TEST_URI,
+  {}
+);
+let principalPrivateBrowsing =
+  Services.scriptSecurityManager.createContentPrincipal(TEST_URI, {
+    privateBrowsingId: 1,
+  });
+let principalUserContext1 =
+  Services.scriptSecurityManager.createContentPrincipal(TEST_URI, {
+    userContextId: 1,
+  });
+let principalUserContext2 =
+  Services.scriptSecurityManager.createContentPrincipal(TEST_URI, {
+    userContextId: 2,
+  });
+
+function testOAIsolation(permIsolateUserContext, permIsolatePrivateBrowsing) {
+  info(
+    `testOAIsolation: permIsolateUserContext: ${permIsolateUserContext}; permIsolatePrivateBrowsing: ${permIsolatePrivateBrowsing}`
+  );
+
+  let pm = Services.perms;
+
+  Services.prefs.setBoolPref(
+    "permissions.isolateBy.userContext",
+    permIsolateUserContext
+  );
+  Services.prefs.setBoolPref(
+    "permissions.isolateBy.privateBrowsing",
+    permIsolatePrivateBrowsing
+  );
+
+  // Set test permission for normal browsing
+  pm.addFromPrincipal(principal, TEST_PERMISSION, pm.ALLOW_ACTION);
+
+  // Check normal browsing permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+  // normal browsing => user context 1
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext1, TEST_PERMISSION)
+  );
+  // normal browsing => user context 2
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext2, TEST_PERMISSION)
+  );
+  // normal browsing => private browsing
+  Assert.equal(
+    permIsolatePrivateBrowsing
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principalPrivateBrowsing, TEST_PERMISSION)
+  );
+
+  // Set permission for private browsing
+  pm.addFromPrincipal(
+    principalPrivateBrowsing,
+    TEST_PERMISSION2,
+    pm.DENY_ACTION
+  );
+
+  // Check private browsing permission
+  Assert.equal(
+    Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principalPrivateBrowsing, TEST_PERMISSION2)
+  );
+  // private browsing => normal browsing
+  Assert.equal(
+    permIsolatePrivateBrowsing
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION2)
+  );
+  // private browsing => user context 1
+  Assert.equal(
+    permIsolatePrivateBrowsing || permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext1, TEST_PERMISSION2)
+  );
+  // private browsing => user context 2
+  Assert.equal(
+    permIsolatePrivateBrowsing || permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.DENY_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext2, TEST_PERMISSION2)
+  );
+
+  // Set permission for user context 1
+  pm.addFromPrincipal(
+    principalUserContext1,
+    TEST_PERMISSION3,
+    pm.PROMPT_ACTION
+  );
+
+  // Check user context 1 permission
+  Assert.equal(
+    Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext1, TEST_PERMISSION3)
+  );
+
+  // user context 1 => normal browsing
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION3)
+  );
+  // user context 1 => user context 2
+  Assert.equal(
+    permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principalUserContext2, TEST_PERMISSION3)
+  );
+  // user context 1 => private browsing
+  Assert.equal(
+    permIsolatePrivateBrowsing || permIsolateUserContext
+      ? Ci.nsIPermissionManager.UNKNOWN_ACTION
+      : Ci.nsIPermissionManager.PROMPT_ACTION,
+    pm.testPermissionFromPrincipal(principalPrivateBrowsing, TEST_PERMISSION3)
+  );
+
+  pm.removeAll();
+
+  // Modifying an non-isolated/stripped permission should affect all browsing contexts,
+  // independently of permission isolation pref state
+  STRIPPED_PERMS.forEach(perm => {
+    info("Testing stripped permission " + perm);
+
+    // Add a permission for the normal window
+    pm.addFromPrincipal(principal, perm, pm.ALLOW_ACTION);
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principalPrivateBrowsing, perm),
+      Ci.nsIPermissionManager.ALLOW_ACTION
+    );
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principalUserContext1, perm),
+      Ci.nsIPermissionManager.ALLOW_ACTION
+    );
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principalUserContext2, perm),
+      Ci.nsIPermissionManager.ALLOW_ACTION
+    );
+
+    // Remove the permission from private window
+    pm.removeFromPrincipal(principalPrivateBrowsing, perm);
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principal, perm),
+      Ci.nsIPermissionManager.UNKNOWN_ACTION
+    );
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principalUserContext1, perm),
+      Ci.nsIPermissionManager.UNKNOWN_ACTION
+    );
+    Assert.equal(
+      pm.testPermissionFromPrincipal(principalUserContext2, perm),
+      Ci.nsIPermissionManager.UNKNOWN_ACTION
+    );
+
+    // Set a permission for a normal window and then override it by adding it to container 2 again
+    pm.addFromPrincipal(principal, perm, pm.PROMPT_ACTION);
+    pm.addFromPrincipal(principal, TEST_PERMISSION, pm.ALLOW_ACTION);
+    pm.addFromPrincipal(principalUserContext2, perm, pm.DENY_ACTION);
+
+    let principalPerms = pm.getAllForPrincipal(principalPrivateBrowsing, perm);
+
+    Assert.ok(
+      principalPerms.some(p => p.type == perm && p.capability == pm.DENY_ACTION)
+    );
+    if (permIsolatePrivateBrowsing) {
+      Assert.equal(principalPerms.length, 1);
+      Assert.ok(
+        principalPerms.some(
+          p => p.type == perm && p.capability == pm.DENY_ACTION
+        )
+      );
+    } else {
+      Assert.equal(principalPerms.length, 2);
+      Assert.ok(
+        principalPerms.some(
+          p => p.type == TEST_PERMISSION && p.capability == pm.ALLOW_ACTION
+        )
+      );
+    }
+  });
+
+  // Cleanup
+  pm.removeAll();
+}
+
+add_task(async function do_test() {
+  // Test all pref combinations and check if principals with different origin attributes
+  // are isolated.
+  testOAIsolation(true, true);
+  testOAIsolation(true, false);
+  testOAIsolation(false, true);
+  testOAIsolation(false, false);
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_remove_add_update.js b/extensions/permissions/test/unit/test_permmanager_remove_add_update.js
new file mode 100644
index 0000000000..6ec7b1f6e5
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_remove_add_update.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function check_enumerator(principal, permissions) {
+  let perms = Services.perms.getAllForPrincipal(principal);
+  for (let [type, capability, expireType] of permissions) {
+    let perm = perms.shift();
+    Assert.ok(perm != null);
+    Assert.equal(perm.type, type);
+    Assert.equal(perm.capability, capability);
+    Assert.equal(perm.expireType, expireType);
+  }
+  Assert.ok(!perms.length);
+}
+
+add_task(async function test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+
+  // setup a profile directory
+  do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.ok(pm.all.length === 0);
+
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://example.com"
+    );
+
+  info("From session to persistent");
+  pm.addFromPrincipal(
+    principal,
+    "test/foo",
+    pm.ALLOW_ACTION,
+    pm.EXPIRE_SESSION
+  );
+
+  check_enumerator(principal, [
+    ["test/foo", pm.ALLOW_ACTION, pm.EXPIRE_SESSION],
+  ]);
+
+  pm.addFromPrincipal(principal, "test/foo", pm.ALLOW_ACTION, pm.EXPIRE_NEVER);
+
+  check_enumerator(principal, [["test/foo", pm.ALLOW_ACTION, pm.EXPIRE_NEVER]]);
+
+  // Let's reload the DB.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  Assert.ok(pm.all.length === 1);
+  check_enumerator(principal, [["test/foo", pm.ALLOW_ACTION, pm.EXPIRE_NEVER]]);
+
+  info("From persistent to session");
+  pm.addFromPrincipal(
+    principal,
+    "test/foo",
+    pm.ALLOW_ACTION,
+    pm.EXPIRE_SESSION
+  );
+
+  check_enumerator(principal, [
+    ["test/foo", pm.ALLOW_ACTION, pm.EXPIRE_SESSION],
+  ]);
+
+  // Let's reload the DB.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+  Assert.ok(pm.all.length === 0);
+
+  info("From persistent to persistent");
+  pm.addFromPrincipal(principal, "test/foo", pm.ALLOW_ACTION, pm.EXPIRE_NEVER);
+  pm.addFromPrincipal(principal, "test/foo", pm.DENY_ACTION, pm.EXPIRE_NEVER);
+
+  check_enumerator(principal, [["test/foo", pm.DENY_ACTION, pm.EXPIRE_NEVER]]);
+
+  // Let's reload the DB.
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+  Assert.ok(pm.all.length === 1);
+  check_enumerator(principal, [["test/foo", pm.DENY_ACTION, pm.EXPIRE_NEVER]]);
+
+  info("Cleanup");
+  pm.removeAll();
+  check_enumerator(principal, []);
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_removeall.js b/extensions/permissions/test/unit/test_permmanager_removeall.js
new file mode 100644
index 0000000000..e6faea1369
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_removeall.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+  // setup a profile directory
+  var dir = do_get_profile();
+
+  // We need to execute a pm method to be sure that the DB is fully
+  // initialized.
+  var pm = Services.perms;
+  Assert.ok(pm.all.length === 0);
+
+  Services.obs.notifyObservers(null, "testonly-reload-permissions-from-disk");
+
+  // Let's force the completion of the DB reading.
+  Assert.ok(pm.all.length === 0);
+
+  // get the db file
+  var file = dir.clone();
+  file.append("permissions.sqlite");
+
+  Assert.ok(file.exists());
+
+  // corrupt the file
+  var ostream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(
+    Ci.nsIFileOutputStream
+  );
+  ostream.init(file, 0x02, 0o666, 0);
+  var conv = Cc["@mozilla.org/intl/converter-output-stream;1"].createInstance(
+    Ci.nsIConverterOutputStream
+  );
+  conv.init(ostream, "UTF-8");
+  for (var i = 0; i < file.fileSize; ++i) {
+    conv.writeString("a");
+  }
+  conv.close();
+
+  // prepare an empty hostperm.1 file so that it can be used for importing
+  var hostperm = dir.clone();
+  hostperm.append("hostperm.1");
+  ostream.init(hostperm, 0x02 | 0x08, 0o666, 0);
+  ostream.close();
+
+  // remove all should not throw
+  pm.removeAll();
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_removebytype.js b/extensions/permissions/test/unit/test_permmanager_removebytype.js
new file mode 100644
index 0000000000..127e0de6ec
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_removebytype.js
@@ -0,0 +1,76 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+
+  // initialize the permission manager service
+  let pm = Services.perms;
+
+  Assert.equal(pm.all.length, 0);
+
+  // add some permissions
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://amazon.com:8080"
+    );
+  let principal2 =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://google.com:2048"
+    );
+  let principal3 =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "https://google.com"
+    );
+
+  pm.addFromPrincipal(principal, "apple", 3);
+  pm.addFromPrincipal(principal, "pear", 1);
+  pm.addFromPrincipal(principal, "cucumber", 1);
+
+  pm.addFromPrincipal(principal2, "apple", 2);
+  pm.addFromPrincipal(principal2, "pear", 2);
+
+  pm.addFromPrincipal(principal3, "cucumber", 3);
+  pm.addFromPrincipal(principal3, "apple", 1);
+
+  Assert.equal(pm.all.length, 7);
+
+  pm.removeByType("apple");
+  Assert.equal(pm.all.length, 4);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 2);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 3);
+
+  pm.removeByType("cucumber");
+  Assert.equal(pm.all.length, 2);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 2);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 0);
+
+  pm.removeByType("pear");
+  Assert.equal(pm.all.length, 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 0);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_removebytypesince.js b/extensions/permissions/test/unit/test_permmanager_removebytypesince.js
new file mode 100644
index 0000000000..4c392501d7
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_removebytypesince.js
@@ -0,0 +1,89 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function test() {
+  Services.prefs.setCharPref("permissions.manager.defaultsUrl", "");
+
+  // initialize the permission manager service
+  let pm = Services.perms;
+
+  Assert.equal(pm.all.length, 0);
+
+  // add some permissions
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://amazon.com:8080"
+    );
+  let principal2 =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://google.com:2048"
+    );
+  let principal3 =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "https://google.com"
+    );
+
+  pm.addFromPrincipal(principal, "apple", 3);
+  pm.addFromPrincipal(principal, "pear", 1);
+  pm.addFromPrincipal(principal, "cucumber", 1);
+
+  // sleep briefly, then record the time - we'll remove some permissions since then.
+  await new Promise(resolve => do_timeout(20, resolve));
+
+  let since = Date.now();
+
+  // *sob* - on Windows at least, the now recorded by PermissionManager.cpp
+  // might be a couple of ms *earlier* than what JS sees.  So another sleep
+  // to ensure our |since| is greater than the time of the permissions we
+  // are now adding.  Sadly this means we'll never be able to test when since
+  // exactly equals the modTime, but there you go...
+  await new Promise(resolve => do_timeout(20, resolve));
+
+  pm.addFromPrincipal(principal2, "apple", 2);
+  pm.addFromPrincipal(principal2, "pear", 2);
+
+  pm.addFromPrincipal(principal3, "cucumber", 3);
+  pm.addFromPrincipal(principal3, "apple", 1);
+
+  Assert.equal(pm.all.length, 7);
+
+  pm.removeByTypeSince("apple", since);
+
+  Assert.equal(pm.all.length, 5);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 2);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 3);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 3);
+
+  pm.removeByTypeSince("cucumber", since);
+  Assert.equal(pm.all.length, 4);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 2);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 3);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 0);
+
+  pm.removeByTypeSince("pear", since);
+  Assert.equal(pm.all.length, 3);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "pear"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "pear"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "apple"), 3);
+  Assert.equal(pm.testPermissionFromPrincipal(principal2, "apple"), 0);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "apple"), 0);
+
+  Assert.equal(pm.testPermissionFromPrincipal(principal, "cucumber"), 1);
+  Assert.equal(pm.testPermissionFromPrincipal(principal3, "cucumber"), 0);
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_removepermission.js b/extensions/permissions/test/unit/test_permmanager_removepermission.js
new file mode 100644
index 0000000000..50b2c3105b
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_removepermission.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  // initialize the permission manager service
+  let pm = Services.perms;
+
+  Assert.equal(pm.all.length, 0);
+
+  // add some permissions
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://amazon.com:8080"
+    );
+  let principal2 =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "http://google.com:2048"
+    );
+
+  pm.addFromPrincipal(principal, "apple", 0);
+  pm.addFromPrincipal(principal, "apple", 3);
+  pm.addFromPrincipal(principal, "pear", 3);
+  pm.addFromPrincipal(principal, "pear", 1);
+  pm.addFromPrincipal(principal, "cucumber", 1);
+  pm.addFromPrincipal(principal, "cucumber", 1);
+  pm.addFromPrincipal(principal, "cucumber", 1);
+
+  pm.addFromPrincipal(principal2, "apple", 2);
+  pm.addFromPrincipal(principal2, "pear", 0);
+  pm.addFromPrincipal(principal2, "pear", 2);
+
+  // Make sure that removePermission doesn't remove more than one permission each time
+  Assert.equal(pm.all.length, 5);
+
+  remove_one_by_type("apple");
+  Assert.equal(pm.all.length, 4);
+
+  remove_one_by_type("apple");
+  Assert.equal(pm.all.length, 3);
+
+  remove_one_by_type("pear");
+  Assert.equal(pm.all.length, 2);
+
+  remove_one_by_type("cucumber");
+  Assert.equal(pm.all.length, 1);
+
+  remove_one_by_type("pear");
+  Assert.equal(pm.all.length, 0);
+
+  function remove_one_by_type(type) {
+    for (let perm of pm.all) {
+      if (perm.type == type) {
+        pm.removePermission(perm);
+        break;
+      }
+    }
+  }
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_removesince.js b/extensions/permissions/test/unit/test_permmanager_removesince.js
new file mode 100644
index 0000000000..c33d02b08b
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_removesince.js
@@ -0,0 +1,83 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that removing permissions since a specified time behaves as expected.
+
+var test_generator = do_run_test();
+
+function run_test() {
+  do_test_pending();
+  test_generator.next();
+}
+
+function continue_test() {
+  do_run_generator(test_generator);
+}
+
+function* do_run_test() {
+  let pm = Services.perms;
+
+  // to help with testing edge-cases, we will arrange for .removeAllSince to
+  // remove *all* permissions from one principal and one permission from another.
+  let permURI1 = NetUtil.newURI("http://example.com");
+  let principal1 = Services.scriptSecurityManager.createContentPrincipal(
+    permURI1,
+    {}
+  );
+
+  let permURI2 = NetUtil.newURI("http://example.org");
+  let principal2 = Services.scriptSecurityManager.createContentPrincipal(
+    permURI2,
+    {}
+  );
+
+  // add a permission now - this isn't going to be removed.
+  pm.addFromPrincipal(principal1, "test/remove-since", 1);
+
+  // sleep briefly, then record the time - we'll remove all since then.
+  do_timeout(20, continue_test);
+  yield;
+
+  let since = Number(Date.now());
+
+  // *sob* - on Windows at least, the now recorded by PermissionManager.cpp
+  // might be a couple of ms *earlier* than what JS sees.  So another sleep
+  // to ensure our |since| is greater than the time of the permissions we
+  // are now adding.  Sadly this means we'll never be able to test when since
+  // exactly equals the modTime, but there you go...
+  do_timeout(20, continue_test);
+  yield;
+
+  // add another item - this second one should get nuked.
+  pm.addFromPrincipal(principal1, "test/remove-since-2", 1);
+
+  // add 2 items for the second principal - both will be removed.
+  pm.addFromPrincipal(principal2, "test/remove-since", 1);
+  pm.addFromPrincipal(principal2, "test/remove-since-2", 1);
+
+  // do the removal.
+  pm.removeAllSince(since);
+
+  // principal1 - the first one should remain.
+  Assert.equal(
+    1,
+    pm.testPermissionFromPrincipal(principal1, "test/remove-since")
+  );
+  // but the second should have been removed.
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal1, "test/remove-since-2")
+  );
+
+  // principal2 - both should have been removed.
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal2, "test/remove-since")
+  );
+  Assert.equal(
+    0,
+    pm.testPermissionFromPrincipal(principal2, "test/remove-since-2")
+  );
+
+  do_finish_generator_test(test_generator);
+}
diff --git a/extensions/permissions/test/unit/test_permmanager_site_scope.js b/extensions/permissions/test/unit/test_permmanager_site_scope.js
new file mode 100644
index 0000000000..2944fa2623
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_site_scope.js
@@ -0,0 +1,116 @@
+const TEST_SITE_URI = Services.io.newURI("http://example.com");
+const TEST_FQDN_1_URI = Services.io.newURI("http://test1.example.com");
+const TEST_FQDN_2_URI = Services.io.newURI("http://test2.example.com");
+const TEST_OTHER_URI = Services.io.newURI("http://example.net");
+const TEST_PERMISSION = "3rdPartyStorage^https://example.org";
+
+add_task(async function do_test() {
+  let pm = Services.perms;
+
+  let principal = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_SITE_URI,
+    {}
+  );
+
+  let subdomain1Principal =
+    Services.scriptSecurityManager.createContentPrincipal(TEST_FQDN_1_URI, {});
+
+  let subdomain2Principal =
+    Services.scriptSecurityManager.createContentPrincipal(TEST_FQDN_2_URI, {});
+
+  let otherPrincipal = Services.scriptSecurityManager.createContentPrincipal(
+    TEST_OTHER_URI,
+    {}
+  );
+
+  // Set test permission for site
+  pm.addFromPrincipal(principal, TEST_PERMISSION, pm.ALLOW_ACTION);
+
+  // Check normal site permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+
+  // Check subdomain permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(subdomain1Principal, TEST_PERMISSION)
+  );
+
+  // Check other site permission
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(otherPrincipal, TEST_PERMISSION)
+  );
+
+  // Remove the permission from the site
+  pm.removeFromPrincipal(principal, TEST_PERMISSION);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION),
+    Ci.nsIPermissionManager.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subdomain1Principal, TEST_PERMISSION),
+    Ci.nsIPermissionManager.UNKNOWN_ACTION
+  );
+
+  // Set test permission for subdomain
+  pm.addFromPrincipal(subdomain1Principal, TEST_PERMISSION, pm.ALLOW_ACTION);
+
+  // Check normal site permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION)
+  );
+
+  // Check subdomain permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(subdomain1Principal, TEST_PERMISSION)
+  );
+
+  // Check other subdomain permission
+  Assert.equal(
+    Ci.nsIPermissionManager.ALLOW_ACTION,
+    pm.testPermissionFromPrincipal(subdomain2Principal, TEST_PERMISSION)
+  );
+
+  // Check other site permission
+  Assert.equal(
+    Ci.nsIPermissionManager.UNKNOWN_ACTION,
+    pm.testPermissionFromPrincipal(otherPrincipal, TEST_PERMISSION)
+  );
+
+  // Check that subdomains include the site-scoped in the getAllForPrincipal
+  let sitePerms = pm.getAllForPrincipal(principal, TEST_PERMISSION);
+  let subdomain1Perms = pm.getAllForPrincipal(
+    subdomain1Principal,
+    TEST_PERMISSION
+  );
+  let subdomain2Perms = pm.getAllForPrincipal(
+    subdomain2Principal,
+    TEST_PERMISSION
+  );
+  let otherSitePerms = pm.getAllForPrincipal(otherPrincipal, TEST_PERMISSION);
+
+  Assert.equal(sitePerms.length, 1);
+  Assert.equal(subdomain1Perms.length, 1);
+  Assert.equal(subdomain2Perms.length, 1);
+  Assert.equal(otherSitePerms.length, 0);
+
+  // Remove the permission from the subdomain
+  pm.removeFromPrincipal(subdomain1Principal, TEST_PERMISSION);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(principal, TEST_PERMISSION),
+    Ci.nsIPermissionManager.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subdomain1Principal, TEST_PERMISSION),
+    Ci.nsIPermissionManager.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subdomain2Principal, TEST_PERMISSION),
+    Ci.nsIPermissionManager.UNKNOWN_ACTION
+  );
+});
diff --git a/extensions/permissions/test/unit/test_permmanager_subdomains.js b/extensions/permissions/test/unit/test_permmanager_subdomains.js
new file mode 100644
index 0000000000..4d30372332
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_subdomains.js
@@ -0,0 +1,106 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function getPrincipalFromURI(aURI) {
+  let ssm = Services.scriptSecurityManager;
+  let uri = NetUtil.newURI(aURI);
+  return ssm.createContentPrincipal(uri, {});
+}
+
+function run_test() {
+  var pm = Services.perms;
+
+  // Adds a permission to a sub-domain. Checks if it is working.
+  let sub1Principal = getPrincipalFromURI("http://sub1.example.com");
+  pm.addFromPrincipal(sub1Principal, "test/subdomains", pm.ALLOW_ACTION, 0, 0);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub1Principal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+
+  // A sub-sub-domain should get the permission.
+  let subsubPrincipal = getPrincipalFromURI("http://sub.sub1.example.com");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subsubPrincipal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+
+  // Another sub-domain shouldn't get the permission.
+  let sub2Principal = getPrincipalFromURI("http://sub2.example.com");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub2Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Remove current permissions.
+  pm.removeFromPrincipal(sub1Principal, "test/subdomains");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub1Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // Adding the permission to the main domain. Checks if it is working.
+  let mainPrincipal = getPrincipalFromURI("http://example.com");
+  pm.addFromPrincipal(mainPrincipal, "test/subdomains", pm.ALLOW_ACTION, 0, 0);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(mainPrincipal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+
+  // All sub-domains should have the permission now.
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub1Principal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub2Principal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subsubPrincipal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+
+  // Remove current permissions.
+  pm.removeFromPrincipal(mainPrincipal, "test/subdomains");
+  Assert.equal(
+    pm.testPermissionFromPrincipal(mainPrincipal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub1Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub2Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subsubPrincipal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+
+  // A sanity check that the previous implementation wasn't passing...
+  let crazyPrincipal = getPrincipalFromURI("http://com");
+  pm.addFromPrincipal(crazyPrincipal, "test/subdomains", pm.ALLOW_ACTION, 0, 0);
+  Assert.equal(
+    pm.testPermissionFromPrincipal(crazyPrincipal, "test/subdomains"),
+    pm.ALLOW_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(mainPrincipal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub1Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(sub2Principal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+  Assert.equal(
+    pm.testPermissionFromPrincipal(subsubPrincipal, "test/subdomains"),
+    pm.UNKNOWN_ACTION
+  );
+}
diff --git a/extensions/permissions/test/unit/xpcshell.ini b/extensions/permissions/test/unit/xpcshell.ini
new file mode 100644
index 0000000000..294d7c47a3
--- /dev/null
+++ b/extensions/permissions/test/unit/xpcshell.ini
@@ -0,0 +1,60 @@
+[DEFAULT]
+head = head.js
+
+[test_permmanager_default_pref.js]
+[test_permmanager_defaults.js]
+[test_permmanager_expiration.js]
+skip-if =
+  win10_2004 # Bug 1718292
+  win10_2009 # Bug 1718292
+  win11_2009 # Bug 1797751
+  os == "win" && os_version == "6.1" # Skip on Azure - frequent failure
+[test_permmanager_getAllByTypes.js]
+[test_permmanager_getAllByTypeSince.js]
+[test_permmanager_getAllForPrincipal.js]
+[test_permmanager_getAllWithTypePrefix.js]
+[test_permmanager_getPermissionObject.js]
+[test_permmanager_notifications.js]
+[test_permmanager_removeall.js]
+[test_permmanager_removebytype.js]
+[test_permmanager_removebytypesince.js]
+[test_permmanager_removesince.js]
+[test_permmanager_load_invalid_entries.js]
+skip-if = debug == true
+[test_permmanager_idn.js]
+[test_permmanager_subdomains.js]
+[test_permmanager_local_files.js]
+[test_permmanager_cleardata.js]
+[test_permmanager_removepermission.js]
+[test_permmanager_matchesuri.js]
+[test_permmanager_matches.js]
+[test_permmanager_migrate_4-7.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_5-7a.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_5-7b.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_6-7a.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_6-7b.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_4-7_no_history.js]
+skip-if =
+  apple_silicon || toolkit == 'android' # Disabled due to bleedover with other tests when run in regular suites; passes in "failures" jobs
+[test_permmanager_migrate_7-8.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_9-10.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_10-11.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_migrate_11-12.js]
+skip-if = toolkit == 'android' # Android doesn't use places
+[test_permmanager_oa_strip.js]
+[test_permmanager_site_scope.js]
+[test_permmanager_remove_add_update.js]
+skip-if = win10_2004 && bits == 64 # Bug 1718292
+[test_permmanager_ipc.js]
+# This test is meant to run on a multi process mode
+# and with file urls loaded in their own child process.
+skip-if = !e10s
+firefox-appdir = browser