Adding upstream version 115.8.0esr.upstream/115.8.0esr

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

1 files changed, 1266 insertions, 0 deletions

diff --git a/docshell/base/nsDocShellLoadState.cpp b/docshell/base/nsDocShellLoadState.cpp
new file mode 100644
index 0000000000..f12e146fbd
--- /dev/null
+++ b/docshell/base/nsDocShellLoadState.cpp
@@ -0,0 +1,1266 @@
+/* -*- 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 "nsDocShellLoadState.h"
+#include "nsIDocShell.h"
+#include "nsDocShell.h"
+#include "nsISHEntry.h"
+#include "nsIURIFixup.h"
+#include "nsIWebNavigation.h"
+#include "nsIChannel.h"
+#include "nsIURLQueryStringStripper.h"
+#include "nsNetUtil.h"
+#include "nsQueryObject.h"
+#include "ReferrerInfo.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/Components.h"
+#include "mozilla/dom/BrowsingContext.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/LoadURIOptionsBinding.h"
+#include "mozilla/StaticPrefs_browser.h"
+#include "mozilla/StaticPrefs_fission.h"
+#include "mozilla/Telemetry.h"
+
+#include "mozilla/OriginAttributes.h"
+#include "mozilla/NullPrincipal.h"
+#include "mozilla/StaticPtr.h"
+
+#include "mozilla/dom/PContent.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+// Global reference to the URI fixup service.
+static mozilla::StaticRefPtr<nsIURIFixup> sURIFixup;
+
+nsDocShellLoadState::nsDocShellLoadState(nsIURI* aURI)
+    : nsDocShellLoadState(aURI, nsContentUtils::GenerateLoadIdentifier()) {}
+
+nsDocShellLoadState::nsDocShellLoadState(
+    const DocShellLoadStateInit& aLoadState, mozilla::ipc::IProtocol* aActor,
+    bool* aReadSuccess)
+    : mNotifiedBeforeUnloadListeners(false),
+      mLoadIdentifier(aLoadState.LoadIdentifier()) {
+  // If we return early, we failed to read in the data.
+  *aReadSuccess = false;
+  if (!aLoadState.URI()) {
+    MOZ_ASSERT_UNREACHABLE("Cannot create a LoadState with a null URI!");
+    return;
+  }
+
+  mResultPrincipalURI = aLoadState.ResultPrincipalURI();
+  mResultPrincipalURIIsSome = aLoadState.ResultPrincipalURIIsSome();
+  mKeepResultPrincipalURIIfSet = aLoadState.KeepResultPrincipalURIIfSet();
+  mLoadReplace = aLoadState.LoadReplace();
+  mInheritPrincipal = aLoadState.InheritPrincipal();
+  mPrincipalIsExplicit = aLoadState.PrincipalIsExplicit();
+  mForceAllowDataURI = aLoadState.ForceAllowDataURI();
+  mIsExemptFromHTTPSOnlyMode = aLoadState.IsExemptFromHTTPSOnlyMode();
+  mOriginalFrameSrc = aLoadState.OriginalFrameSrc();
+  mIsFormSubmission = aLoadState.IsFormSubmission();
+  mLoadType = aLoadState.LoadType();
+  mTarget = aLoadState.Target();
+  mTargetBrowsingContext = aLoadState.TargetBrowsingContext();
+  mLoadFlags = aLoadState.LoadFlags();
+  mInternalLoadFlags = aLoadState.InternalLoadFlags();
+  mFirstParty = aLoadState.FirstParty();
+  mHasValidUserGestureActivation = aLoadState.HasValidUserGestureActivation();
+  mAllowFocusMove = aLoadState.AllowFocusMove();
+  mTypeHint = aLoadState.TypeHint();
+  mFileName = aLoadState.FileName();
+  mIsFromProcessingFrameAttributes =
+      aLoadState.IsFromProcessingFrameAttributes();
+  mReferrerInfo = aLoadState.ReferrerInfo();
+  mURI = aLoadState.URI();
+  mOriginalURI = aLoadState.OriginalURI();
+  mSourceBrowsingContext = aLoadState.SourceBrowsingContext();
+  mBaseURI = aLoadState.BaseURI();
+  mTriggeringPrincipal = aLoadState.TriggeringPrincipal();
+  mPrincipalToInherit = aLoadState.PrincipalToInherit();
+  mPartitionedPrincipalToInherit = aLoadState.PartitionedPrincipalToInherit();
+  mTriggeringSandboxFlags = aLoadState.TriggeringSandboxFlags();
+  mTriggeringRemoteType = aLoadState.TriggeringRemoteType();
+  mCsp = aLoadState.Csp();
+  mOriginalURIString = aLoadState.OriginalURIString();
+  mCancelContentJSEpoch = aLoadState.CancelContentJSEpoch();
+  mPostDataStream = aLoadState.PostDataStream();
+  mHeadersStream = aLoadState.HeadersStream();
+  mSrcdocData = aLoadState.SrcdocData();
+  mChannelInitialized = aLoadState.ChannelInitialized();
+  mIsMetaRefresh = aLoadState.IsMetaRefresh();
+  if (aLoadState.loadingSessionHistoryInfo().isSome()) {
+    mLoadingSessionHistoryInfo = MakeUnique<LoadingSessionHistoryInfo>(
+        aLoadState.loadingSessionHistoryInfo().ref());
+  }
+  mUnstrippedURI = aLoadState.UnstrippedURI();
+  mRemoteTypeOverride = aLoadState.RemoteTypeOverride();
+
+  // We know this was created remotely, as we just received it over IPC.
+  mWasCreatedRemotely = true;
+
+  // If we're in the parent process, potentially validate against a LoadState
+  // which we sent to the source content process.
+  if (XRE_IsParentProcess()) {
+    mozilla::ipc::IToplevelProtocol* top = aActor->ToplevelProtocol();
+    if (!top ||
+        top->GetProtocolId() != mozilla::ipc::ProtocolId::PContentMsgStart ||
+        top->GetSide() != mozilla::ipc::ParentSide) {
+      aActor->FatalError("nsDocShellLoadState must be received over PContent");
+      return;
+    }
+    ContentParent* cp = static_cast<ContentParent*>(top);
+
+    // If this load was sent down to the content process as a navigation
+    // request, ensure it still matches the one we sent down.
+    if (RefPtr<nsDocShellLoadState> originalState =
+            cp->TakePendingLoadStateForId(mLoadIdentifier)) {
+      if (const char* mismatch = ValidateWithOriginalState(originalState)) {
+        aActor->FatalError(
+            nsPrintfCString(
+                "nsDocShellLoadState %s changed while in content process",
+                mismatch)
+                .get());
+        return;
+      }
+    } else if (mTriggeringRemoteType != cp->GetRemoteType()) {
+      // If we don't have a previous load to compare to, the content process
+      // must be the triggering process.
+      aActor->FatalError(
+          "nsDocShellLoadState with invalid triggering remote type");
+      return;
+    }
+  }
+
+  // We successfully read in the data - return a success value.
+  *aReadSuccess = true;
+}
+
+nsDocShellLoadState::nsDocShellLoadState(const nsDocShellLoadState& aOther)
+    : mReferrerInfo(aOther.mReferrerInfo),
+      mURI(aOther.mURI),
+      mOriginalURI(aOther.mOriginalURI),
+      mResultPrincipalURI(aOther.mResultPrincipalURI),
+      mResultPrincipalURIIsSome(aOther.mResultPrincipalURIIsSome),
+      mTriggeringPrincipal(aOther.mTriggeringPrincipal),
+      mTriggeringSandboxFlags(aOther.mTriggeringSandboxFlags),
+      mCsp(aOther.mCsp),
+      mKeepResultPrincipalURIIfSet(aOther.mKeepResultPrincipalURIIfSet),
+      mLoadReplace(aOther.mLoadReplace),
+      mInheritPrincipal(aOther.mInheritPrincipal),
+      mPrincipalIsExplicit(aOther.mPrincipalIsExplicit),
+      mNotifiedBeforeUnloadListeners(aOther.mNotifiedBeforeUnloadListeners),
+      mPrincipalToInherit(aOther.mPrincipalToInherit),
+      mPartitionedPrincipalToInherit(aOther.mPartitionedPrincipalToInherit),
+      mForceAllowDataURI(aOther.mForceAllowDataURI),
+      mIsExemptFromHTTPSOnlyMode(aOther.mIsExemptFromHTTPSOnlyMode),
+      mOriginalFrameSrc(aOther.mOriginalFrameSrc),
+      mIsFormSubmission(aOther.mIsFormSubmission),
+      mLoadType(aOther.mLoadType),
+      mSHEntry(aOther.mSHEntry),
+      mTarget(aOther.mTarget),
+      mTargetBrowsingContext(aOther.mTargetBrowsingContext),
+      mPostDataStream(aOther.mPostDataStream),
+      mHeadersStream(aOther.mHeadersStream),
+      mSrcdocData(aOther.mSrcdocData),
+      mSourceBrowsingContext(aOther.mSourceBrowsingContext),
+      mBaseURI(aOther.mBaseURI),
+      mLoadFlags(aOther.mLoadFlags),
+      mInternalLoadFlags(aOther.mInternalLoadFlags),
+      mFirstParty(aOther.mFirstParty),
+      mHasValidUserGestureActivation(aOther.mHasValidUserGestureActivation),
+      mAllowFocusMove(aOther.mAllowFocusMove),
+      mTypeHint(aOther.mTypeHint),
+      mFileName(aOther.mFileName),
+      mIsFromProcessingFrameAttributes(aOther.mIsFromProcessingFrameAttributes),
+      mPendingRedirectedChannel(aOther.mPendingRedirectedChannel),
+      mOriginalURIString(aOther.mOriginalURIString),
+      mCancelContentJSEpoch(aOther.mCancelContentJSEpoch),
+      mLoadIdentifier(aOther.mLoadIdentifier),
+      mChannelInitialized(aOther.mChannelInitialized),
+      mIsMetaRefresh(aOther.mIsMetaRefresh),
+      mWasCreatedRemotely(aOther.mWasCreatedRemotely),
+      mUnstrippedURI(aOther.mUnstrippedURI),
+      mRemoteTypeOverride(aOther.mRemoteTypeOverride),
+      mTriggeringRemoteType(aOther.mTriggeringRemoteType) {
+  MOZ_DIAGNOSTIC_ASSERT(
+      XRE_IsParentProcess(),
+      "Cloning a nsDocShellLoadState with the same load identifier is only "
+      "allowed in the parent process, as it could break triggering remote type "
+      "tracking in content.");
+  if (aOther.mLoadingSessionHistoryInfo) {
+    mLoadingSessionHistoryInfo = MakeUnique<LoadingSessionHistoryInfo>(
+        *aOther.mLoadingSessionHistoryInfo);
+  }
+}
+
+nsDocShellLoadState::nsDocShellLoadState(nsIURI* aURI, uint64_t aLoadIdentifier)
+    : mURI(aURI),
+      mResultPrincipalURIIsSome(false),
+      mTriggeringSandboxFlags(0),
+      mKeepResultPrincipalURIIfSet(false),
+      mLoadReplace(false),
+      mInheritPrincipal(false),
+      mPrincipalIsExplicit(false),
+      mNotifiedBeforeUnloadListeners(false),
+      mForceAllowDataURI(false),
+      mIsExemptFromHTTPSOnlyMode(false),
+      mOriginalFrameSrc(false),
+      mIsFormSubmission(false),
+      mLoadType(LOAD_NORMAL),
+      mTarget(),
+      mSrcdocData(VoidString()),
+      mLoadFlags(0),
+      mInternalLoadFlags(0),
+      mFirstParty(false),
+      mHasValidUserGestureActivation(false),
+      mAllowFocusMove(false),
+      mTypeHint(VoidCString()),
+      mFileName(VoidString()),
+      mIsFromProcessingFrameAttributes(false),
+      mLoadIdentifier(aLoadIdentifier),
+      mChannelInitialized(false),
+      mIsMetaRefresh(false),
+      mWasCreatedRemotely(false),
+      mTriggeringRemoteType(XRE_IsContentProcess()
+                                ? ContentChild::GetSingleton()->GetRemoteType()
+                                : NOT_REMOTE_TYPE) {
+  MOZ_ASSERT(aURI, "Cannot create a LoadState with a null URI!");
+}
+
+nsDocShellLoadState::~nsDocShellLoadState() {
+  if (mWasCreatedRemotely && XRE_IsContentProcess()) {
+    ContentChild::GetSingleton()->SendCleanupPendingLoadState(mLoadIdentifier);
+  }
+}
+
+nsresult nsDocShellLoadState::CreateFromPendingChannel(
+    nsIChannel* aPendingChannel, uint64_t aLoadIdentifier,
+    uint64_t aRegistrarId, nsDocShellLoadState** aResult) {
+  // Create the nsDocShellLoadState object with default state pulled from the
+  // passed-in channel.
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = aPendingChannel->GetURI(getter_AddRefs(uri));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  RefPtr<nsDocShellLoadState> loadState =
+      new nsDocShellLoadState(uri, aLoadIdentifier);
+  loadState->mPendingRedirectedChannel = aPendingChannel;
+  loadState->mChannelRegistrarId = aRegistrarId;
+
+  // Pull relevant state from the channel, and store it on the
+  // nsDocShellLoadState.
+  nsCOMPtr<nsIURI> originalUri;
+  rv = aPendingChannel->GetOriginalURI(getter_AddRefs(originalUri));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  loadState->SetOriginalURI(originalUri);
+
+  nsCOMPtr<nsILoadInfo> loadInfo = aPendingChannel->LoadInfo();
+  loadState->SetTriggeringPrincipal(loadInfo->TriggeringPrincipal());
+
+  // Return the newly created loadState.
+  loadState.forget(aResult);
+  return NS_OK;
+}
+
+static uint32_t WebNavigationFlagsToFixupFlags(nsIURI* aURI,
+                                               const nsACString& aURIString,
+                                               uint32_t aNavigationFlags) {
+  if (aURI) {
+    aNavigationFlags &= ~nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+  }
+  uint32_t fixupFlags = nsIURIFixup::FIXUP_FLAG_NONE;
+  if (aNavigationFlags & nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP) {
+    fixupFlags |= nsIURIFixup::FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP;
+  }
+  if (aNavigationFlags & nsIWebNavigation::LOAD_FLAGS_FIXUP_SCHEME_TYPOS) {
+    fixupFlags |= nsIURIFixup::FIXUP_FLAG_FIX_SCHEME_TYPOS;
+  }
+  return fixupFlags;
+};
+
+nsresult nsDocShellLoadState::CreateFromLoadURIOptions(
+    BrowsingContext* aBrowsingContext, const nsAString& aURI,
+    const LoadURIOptions& aLoadURIOptions, nsDocShellLoadState** aResult) {
+  uint32_t loadFlags = aLoadURIOptions.mLoadFlags;
+
+  NS_ASSERTION(
+      (loadFlags & nsDocShell::INTERNAL_LOAD_FLAGS_LOADURI_SETUP_FLAGS) == 0,
+      "Unexpected flags");
+
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_OK;
+
+  NS_ConvertUTF16toUTF8 uriString(aURI);
+  // Cleanup the empty spaces that might be on each end.
+  uriString.Trim(" ");
+  // Eliminate embedded newlines, which single-line text fields now allow:
+  uriString.StripCRLF();
+  NS_ENSURE_TRUE(!uriString.IsEmpty(), NS_ERROR_FAILURE);
+
+  // Just create a URI and see what happens...
+  rv = NS_NewURI(getter_AddRefs(uri), uriString);
+  bool fixup = true;
+  if (NS_SUCCEEDED(rv) && uri &&
+      (uri->SchemeIs("about") || uri->SchemeIs("chrome"))) {
+    // Avoid third party fixup as a performance optimization.
+    loadFlags &= ~nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+    fixup = false;
+  } else if (!sURIFixup && !XRE_IsContentProcess()) {
+    nsCOMPtr<nsIURIFixup> uriFixup = components::URIFixup::Service();
+    if (uriFixup) {
+      sURIFixup = uriFixup;
+      ClearOnShutdown(&sURIFixup);
+    } else {
+      fixup = false;
+    }
+  }
+
+  nsAutoString searchProvider, keyword;
+  RefPtr<nsIInputStream> fixupStream;
+  if (fixup) {
+    uint32_t fixupFlags =
+        WebNavigationFlagsToFixupFlags(uri, uriString, loadFlags);
+
+    // If we don't allow keyword lookups for this URL string, make sure to
+    // update loadFlags to indicate this as well.
+    if (!(fixupFlags & nsIURIFixup::FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP)) {
+      loadFlags &= ~nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+    }
+    // Ensure URIFixup will use the right search engine in Private Browsing.
+    if (aBrowsingContext->UsePrivateBrowsing()) {
+      fixupFlags |= nsIURIFixup::FIXUP_FLAG_PRIVATE_CONTEXT;
+    }
+
+    if (!XRE_IsContentProcess()) {
+      nsCOMPtr<nsIURIFixupInfo> fixupInfo;
+      sURIFixup->GetFixupURIInfo(uriString, fixupFlags,
+                                 getter_AddRefs(fixupInfo));
+      if (fixupInfo) {
+        // We could fix the uri, clear NS_ERROR_MALFORMED_URI.
+        rv = NS_OK;
+        fixupInfo->GetPreferredURI(getter_AddRefs(uri));
+        fixupInfo->SetConsumer(aBrowsingContext);
+        fixupInfo->GetKeywordProviderName(searchProvider);
+        fixupInfo->GetKeywordAsSent(keyword);
+        // GetFixupURIInfo only returns a post data stream if it succeeded
+        // and changed the URI, in which case we should override the
+        // passed-in post data by passing this as an override arg to
+        // our internal method.
+        fixupInfo->GetPostData(getter_AddRefs(fixupStream));
+
+        if (fixupInfo &&
+            loadFlags & nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP) {
+          nsCOMPtr<nsIObserverService> serv = services::GetObserverService();
+          if (serv) {
+            serv->NotifyObservers(fixupInfo, "keyword-uri-fixup",
+                                  PromiseFlatString(aURI).get());
+          }
+        }
+        nsDocShell::MaybeNotifyKeywordSearchLoading(searchProvider, keyword);
+      }
+    }
+  }
+
+  if (rv == NS_ERROR_MALFORMED_URI) {
+    MOZ_ASSERT(!uri);
+    return rv;
+  }
+
+  if (NS_FAILED(rv) || !uri) {
+    return NS_ERROR_FAILURE;
+  }
+
+  RefPtr<nsDocShellLoadState> loadState;
+  rv = CreateFromLoadURIOptions(
+      aBrowsingContext, uri, aLoadURIOptions, loadFlags,
+      fixupStream ? fixupStream : aLoadURIOptions.mPostData,
+      getter_AddRefs(loadState));
+  NS_ENSURE_SUCCESS(rv, rv);
+  loadState->SetOriginalURIString(uriString);
+  loadState.forget(aResult);
+  return NS_OK;
+}
+
+nsresult nsDocShellLoadState::CreateFromLoadURIOptions(
+    BrowsingContext* aBrowsingContext, nsIURI* aURI,
+    const LoadURIOptions& aLoadURIOptions, nsDocShellLoadState** aResult) {
+  return CreateFromLoadURIOptions(aBrowsingContext, aURI, aLoadURIOptions,
+                                  aLoadURIOptions.mLoadFlags,
+                                  aLoadURIOptions.mPostData, aResult);
+}
+
+nsresult nsDocShellLoadState::CreateFromLoadURIOptions(
+    BrowsingContext* aBrowsingContext, nsIURI* aURI,
+    const LoadURIOptions& aLoadURIOptions, uint32_t aLoadFlagsOverride,
+    nsIInputStream* aPostDataOverride, nsDocShellLoadState** aResult) {
+  nsresult rv = NS_OK;
+  uint32_t loadFlags = aLoadFlagsOverride;
+  RefPtr<nsIInputStream> postData = aPostDataOverride;
+  uint64_t available;
+  if (postData) {
+    rv = postData->Available(&available);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (available == 0) {
+      return NS_ERROR_INVALID_ARG;
+    }
+  }
+
+  if (aLoadURIOptions.mHeaders) {
+    rv = aLoadURIOptions.mHeaders->Available(&available);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (available == 0) {
+      return NS_ERROR_INVALID_ARG;
+    }
+  }
+
+  bool forceAllowDataURI =
+      loadFlags & nsIWebNavigation::LOAD_FLAGS_FORCE_ALLOW_DATA_URI;
+
+  // Don't pass certain flags that aren't needed and end up confusing
+  // ConvertLoadTypeToDocShellInfoLoadType.  We do need to ensure that they are
+  // passed to LoadURI though, since it uses them.
+  uint32_t extraFlags = (loadFlags & EXTRA_LOAD_FLAGS);
+  loadFlags &= ~EXTRA_LOAD_FLAGS;
+
+  RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(aURI);
+  loadState->SetReferrerInfo(aLoadURIOptions.mReferrerInfo);
+
+  loadState->SetLoadType(MAKE_LOAD_TYPE(LOAD_NORMAL, loadFlags));
+
+  loadState->SetLoadFlags(extraFlags);
+  loadState->SetFirstParty(true);
+  loadState->SetHasValidUserGestureActivation(
+      aLoadURIOptions.mHasValidUserGestureActivation);
+  loadState->SetTriggeringSandboxFlags(aLoadURIOptions.mTriggeringSandboxFlags);
+  loadState->SetPostDataStream(postData);
+  loadState->SetHeadersStream(aLoadURIOptions.mHeaders);
+  loadState->SetBaseURI(aLoadURIOptions.mBaseURI);
+  loadState->SetTriggeringPrincipal(aLoadURIOptions.mTriggeringPrincipal);
+  loadState->SetCsp(aLoadURIOptions.mCsp);
+  loadState->SetForceAllowDataURI(forceAllowDataURI);
+  if (aLoadURIOptions.mCancelContentJSEpoch) {
+    loadState->SetCancelContentJSEpoch(aLoadURIOptions.mCancelContentJSEpoch);
+  }
+
+  if (aLoadURIOptions.mTriggeringRemoteType.WasPassed()) {
+    if (XRE_IsParentProcess()) {
+      loadState->SetTriggeringRemoteType(
+          aLoadURIOptions.mTriggeringRemoteType.Value());
+    } else if (ContentChild::GetSingleton()->GetRemoteType() !=
+               aLoadURIOptions.mTriggeringRemoteType.Value()) {
+      NS_WARNING("Invalid TriggeringRemoteType from LoadURIOptions in content");
+      return NS_ERROR_INVALID_ARG;
+    }
+  }
+
+  if (aLoadURIOptions.mRemoteTypeOverride.WasPassed()) {
+    loadState->SetRemoteTypeOverride(
+        aLoadURIOptions.mRemoteTypeOverride.Value());
+  }
+
+  loadState.forget(aResult);
+  return NS_OK;
+}
+
+nsIReferrerInfo* nsDocShellLoadState::GetReferrerInfo() const {
+  return mReferrerInfo;
+}
+
+void nsDocShellLoadState::SetReferrerInfo(nsIReferrerInfo* aReferrerInfo) {
+  mReferrerInfo = aReferrerInfo;
+}
+
+nsIURI* nsDocShellLoadState::URI() const { return mURI; }
+
+void nsDocShellLoadState::SetURI(nsIURI* aURI) { mURI = aURI; }
+
+nsIURI* nsDocShellLoadState::OriginalURI() const { return mOriginalURI; }
+
+void nsDocShellLoadState::SetOriginalURI(nsIURI* aOriginalURI) {
+  mOriginalURI = aOriginalURI;
+}
+
+nsIURI* nsDocShellLoadState::ResultPrincipalURI() const {
+  return mResultPrincipalURI;
+}
+
+void nsDocShellLoadState::SetResultPrincipalURI(nsIURI* aResultPrincipalURI) {
+  mResultPrincipalURI = aResultPrincipalURI;
+}
+
+bool nsDocShellLoadState::ResultPrincipalURIIsSome() const {
+  return mResultPrincipalURIIsSome;
+}
+
+void nsDocShellLoadState::SetResultPrincipalURIIsSome(bool aIsSome) {
+  mResultPrincipalURIIsSome = aIsSome;
+}
+
+bool nsDocShellLoadState::KeepResultPrincipalURIIfSet() const {
+  return mKeepResultPrincipalURIIfSet;
+}
+
+void nsDocShellLoadState::SetKeepResultPrincipalURIIfSet(bool aKeep) {
+  mKeepResultPrincipalURIIfSet = aKeep;
+}
+
+bool nsDocShellLoadState::LoadReplace() const { return mLoadReplace; }
+
+void nsDocShellLoadState::SetLoadReplace(bool aLoadReplace) {
+  mLoadReplace = aLoadReplace;
+}
+
+nsIPrincipal* nsDocShellLoadState::TriggeringPrincipal() const {
+  return mTriggeringPrincipal;
+}
+
+void nsDocShellLoadState::SetTriggeringPrincipal(
+    nsIPrincipal* aTriggeringPrincipal) {
+  mTriggeringPrincipal = aTriggeringPrincipal;
+}
+
+nsIPrincipal* nsDocShellLoadState::PrincipalToInherit() const {
+  return mPrincipalToInherit;
+}
+
+void nsDocShellLoadState::SetPrincipalToInherit(
+    nsIPrincipal* aPrincipalToInherit) {
+  mPrincipalToInherit = aPrincipalToInherit;
+}
+
+nsIPrincipal* nsDocShellLoadState::PartitionedPrincipalToInherit() const {
+  return mPartitionedPrincipalToInherit;
+}
+
+void nsDocShellLoadState::SetPartitionedPrincipalToInherit(
+    nsIPrincipal* aPartitionedPrincipalToInherit) {
+  mPartitionedPrincipalToInherit = aPartitionedPrincipalToInherit;
+}
+
+void nsDocShellLoadState::SetCsp(nsIContentSecurityPolicy* aCsp) {
+  mCsp = aCsp;
+}
+
+nsIContentSecurityPolicy* nsDocShellLoadState::Csp() const { return mCsp; }
+
+void nsDocShellLoadState::SetTriggeringSandboxFlags(uint32_t flags) {
+  mTriggeringSandboxFlags = flags;
+}
+
+uint32_t nsDocShellLoadState::TriggeringSandboxFlags() const {
+  return mTriggeringSandboxFlags;
+}
+
+bool nsDocShellLoadState::InheritPrincipal() const { return mInheritPrincipal; }
+
+void nsDocShellLoadState::SetInheritPrincipal(bool aInheritPrincipal) {
+  mInheritPrincipal = aInheritPrincipal;
+}
+
+bool nsDocShellLoadState::PrincipalIsExplicit() const {
+  return mPrincipalIsExplicit;
+}
+
+void nsDocShellLoadState::SetPrincipalIsExplicit(bool aPrincipalIsExplicit) {
+  mPrincipalIsExplicit = aPrincipalIsExplicit;
+}
+
+bool nsDocShellLoadState::NotifiedBeforeUnloadListeners() const {
+  return mNotifiedBeforeUnloadListeners;
+}
+
+void nsDocShellLoadState::SetNotifiedBeforeUnloadListeners(
+    bool aNotifiedBeforeUnloadListeners) {
+  mNotifiedBeforeUnloadListeners = aNotifiedBeforeUnloadListeners;
+}
+
+bool nsDocShellLoadState::ForceAllowDataURI() const {
+  return mForceAllowDataURI;
+}
+
+void nsDocShellLoadState::SetForceAllowDataURI(bool aForceAllowDataURI) {
+  mForceAllowDataURI = aForceAllowDataURI;
+}
+
+bool nsDocShellLoadState::IsExemptFromHTTPSOnlyMode() const {
+  return mIsExemptFromHTTPSOnlyMode;
+}
+
+void nsDocShellLoadState::SetIsExemptFromHTTPSOnlyMode(
+    bool aIsExemptFromHTTPSOnlyMode) {
+  mIsExemptFromHTTPSOnlyMode = aIsExemptFromHTTPSOnlyMode;
+}
+
+bool nsDocShellLoadState::OriginalFrameSrc() const { return mOriginalFrameSrc; }
+
+void nsDocShellLoadState::SetOriginalFrameSrc(bool aOriginalFrameSrc) {
+  mOriginalFrameSrc = aOriginalFrameSrc;
+}
+
+bool nsDocShellLoadState::IsFormSubmission() const { return mIsFormSubmission; }
+
+void nsDocShellLoadState::SetIsFormSubmission(bool aIsFormSubmission) {
+  mIsFormSubmission = aIsFormSubmission;
+}
+
+uint32_t nsDocShellLoadState::LoadType() const { return mLoadType; }
+
+void nsDocShellLoadState::SetLoadType(uint32_t aLoadType) {
+  mLoadType = aLoadType;
+}
+
+nsISHEntry* nsDocShellLoadState::SHEntry() const { return mSHEntry; }
+
+void nsDocShellLoadState::SetSHEntry(nsISHEntry* aSHEntry) {
+  mSHEntry = aSHEntry;
+  nsCOMPtr<SessionHistoryEntry> she = do_QueryInterface(aSHEntry);
+  if (she) {
+    mLoadingSessionHistoryInfo = MakeUnique<LoadingSessionHistoryInfo>(she);
+  } else {
+    mLoadingSessionHistoryInfo = nullptr;
+  }
+}
+
+void nsDocShellLoadState::SetLoadingSessionHistoryInfo(
+    const mozilla::dom::LoadingSessionHistoryInfo& aLoadingInfo) {
+  SetLoadingSessionHistoryInfo(
+      MakeUnique<mozilla::dom::LoadingSessionHistoryInfo>(aLoadingInfo));
+}
+
+void nsDocShellLoadState::SetLoadingSessionHistoryInfo(
+    mozilla::UniquePtr<mozilla::dom::LoadingSessionHistoryInfo> aLoadingInfo) {
+  mLoadingSessionHistoryInfo = std::move(aLoadingInfo);
+}
+
+const mozilla::dom::LoadingSessionHistoryInfo*
+nsDocShellLoadState::GetLoadingSessionHistoryInfo() const {
+  return mLoadingSessionHistoryInfo.get();
+}
+
+void nsDocShellLoadState::SetLoadIsFromSessionHistory(
+    int32_t aOffset, bool aLoadingCurrentEntry) {
+  if (mLoadingSessionHistoryInfo) {
+    mLoadingSessionHistoryInfo->mLoadIsFromSessionHistory = true;
+    mLoadingSessionHistoryInfo->mOffset = aOffset;
+    mLoadingSessionHistoryInfo->mLoadingCurrentEntry = aLoadingCurrentEntry;
+  }
+}
+
+void nsDocShellLoadState::ClearLoadIsFromSessionHistory() {
+  if (mLoadingSessionHistoryInfo) {
+    mLoadingSessionHistoryInfo->mLoadIsFromSessionHistory = false;
+  }
+  mSHEntry = nullptr;
+}
+
+bool nsDocShellLoadState::LoadIsFromSessionHistory() const {
+  return mLoadingSessionHistoryInfo
+             ? mLoadingSessionHistoryInfo->mLoadIsFromSessionHistory
+             : !!mSHEntry;
+}
+
+void nsDocShellLoadState::MaybeStripTrackerQueryStrings(
+    BrowsingContext* aContext) {
+  MOZ_ASSERT(aContext);
+
+  // Return early if the triggering principal doesn't exist. This could happen
+  // when loading a URL by using a browsing context in the Browser Toolbox.
+  if (!TriggeringPrincipal()) {
+    return;
+  }
+
+  // We don't need to strip for sub frames because the query string has been
+  // stripped in the top-level content. Also, we don't apply stripping if it
+  // is triggered by addons.
+  //
+  // Note that we don't need to do the stripping if the channel has been
+  // initialized. This means that this has been loaded speculatively in the
+  // parent process before and the stripping was happening by then.
+  if (GetChannelInitialized() || !aContext->IsTopContent() ||
+      BasePrincipal::Cast(TriggeringPrincipal())->AddonPolicy()) {
+    return;
+  }
+
+  // We don't strip the URI if it's the same-site navigation. Note that we will
+  // consider the system principal triggered load as third-party in case the
+  // user copies and pastes a URL which has tracking query parameters or an
+  // loading from external applications, such as clicking a link in an email
+  // client.
+  bool isThirdPartyURI = false;
+  if (!TriggeringPrincipal()->IsSystemPrincipal() &&
+      (NS_FAILED(
+           TriggeringPrincipal()->IsThirdPartyURI(URI(), &isThirdPartyURI)) ||
+       !isThirdPartyURI)) {
+    return;
+  }
+
+  Telemetry::AccumulateCategorical(
+      Telemetry::LABELS_QUERY_STRIPPING_COUNT::Navigation);
+
+  nsCOMPtr<nsIURI> strippedURI;
+
+  nsresult rv;
+  nsCOMPtr<nsIURLQueryStringStripper> queryStripper =
+      components::URLQueryStringStripper::Service(&rv);
+  NS_ENSURE_SUCCESS_VOID(rv);
+
+  uint32_t numStripped;
+
+  queryStripper->Strip(URI(), aContext->UsePrivateBrowsing(),
+                       getter_AddRefs(strippedURI), &numStripped);
+  if (numStripped) {
+    if (!mUnstrippedURI) {
+      mUnstrippedURI = URI();
+    }
+    SetURI(strippedURI);
+
+    Telemetry::AccumulateCategorical(
+        Telemetry::LABELS_QUERY_STRIPPING_COUNT::StripForNavigation);
+    Telemetry::Accumulate(Telemetry::QUERY_STRIPPING_PARAM_COUNT, numStripped);
+  }
+
+#ifdef DEBUG
+  // Make sure that unstripped URI is the same as URI() but only the query
+  // string could be different.
+  if (mUnstrippedURI) {
+    nsCOMPtr<nsIURI> uri;
+    Unused << queryStripper->Strip(mUnstrippedURI,
+                                   aContext->UsePrivateBrowsing(),
+                                   getter_AddRefs(uri), &numStripped);
+    bool equals = false;
+    Unused << URI()->Equals(uri, &equals);
+    MOZ_ASSERT(equals);
+  }
+#endif
+}
+
+const nsString& nsDocShellLoadState::Target() const { return mTarget; }
+
+void nsDocShellLoadState::SetTarget(const nsAString& aTarget) {
+  mTarget = aTarget;
+}
+
+nsIInputStream* nsDocShellLoadState::PostDataStream() const {
+  return mPostDataStream;
+}
+
+void nsDocShellLoadState::SetPostDataStream(nsIInputStream* aStream) {
+  mPostDataStream = aStream;
+}
+
+nsIInputStream* nsDocShellLoadState::HeadersStream() const {
+  return mHeadersStream;
+}
+
+void nsDocShellLoadState::SetHeadersStream(nsIInputStream* aHeadersStream) {
+  mHeadersStream = aHeadersStream;
+}
+
+const nsString& nsDocShellLoadState::SrcdocData() const { return mSrcdocData; }
+
+void nsDocShellLoadState::SetSrcdocData(const nsAString& aSrcdocData) {
+  mSrcdocData = aSrcdocData;
+}
+
+void nsDocShellLoadState::SetSourceBrowsingContext(
+    BrowsingContext* aSourceBrowsingContext) {
+  mSourceBrowsingContext = aSourceBrowsingContext;
+}
+
+void nsDocShellLoadState::SetTargetBrowsingContext(
+    BrowsingContext* aTargetBrowsingContext) {
+  mTargetBrowsingContext = aTargetBrowsingContext;
+}
+
+nsIURI* nsDocShellLoadState::BaseURI() const { return mBaseURI; }
+
+void nsDocShellLoadState::SetBaseURI(nsIURI* aBaseURI) { mBaseURI = aBaseURI; }
+
+void nsDocShellLoadState::GetMaybeResultPrincipalURI(
+    mozilla::Maybe<nsCOMPtr<nsIURI>>& aRPURI) const {
+  bool isSome = ResultPrincipalURIIsSome();
+  aRPURI.reset();
+
+  if (!isSome) {
+    return;
+  }
+
+  nsCOMPtr<nsIURI> uri = ResultPrincipalURI();
+  aRPURI.emplace(std::move(uri));
+}
+
+void nsDocShellLoadState::SetMaybeResultPrincipalURI(
+    mozilla::Maybe<nsCOMPtr<nsIURI>> const& aRPURI) {
+  SetResultPrincipalURI(aRPURI.refOr(nullptr));
+  SetResultPrincipalURIIsSome(aRPURI.isSome());
+}
+
+uint32_t nsDocShellLoadState::LoadFlags() const { return mLoadFlags; }
+
+void nsDocShellLoadState::SetLoadFlags(uint32_t aLoadFlags) {
+  mLoadFlags = aLoadFlags;
+}
+
+void nsDocShellLoadState::SetLoadFlag(uint32_t aFlag) { mLoadFlags |= aFlag; }
+
+void nsDocShellLoadState::UnsetLoadFlag(uint32_t aFlag) {
+  mLoadFlags &= ~aFlag;
+}
+
+bool nsDocShellLoadState::HasLoadFlags(uint32_t aFlags) {
+  return (mLoadFlags & aFlags) == aFlags;
+}
+
+uint32_t nsDocShellLoadState::InternalLoadFlags() const {
+  return mInternalLoadFlags;
+}
+
+void nsDocShellLoadState::SetInternalLoadFlags(uint32_t aLoadFlags) {
+  mInternalLoadFlags = aLoadFlags;
+}
+
+void nsDocShellLoadState::SetInternalLoadFlag(uint32_t aFlag) {
+  mInternalLoadFlags |= aFlag;
+}
+
+void nsDocShellLoadState::UnsetInternalLoadFlag(uint32_t aFlag) {
+  mInternalLoadFlags &= ~aFlag;
+}
+
+bool nsDocShellLoadState::HasInternalLoadFlags(uint32_t aFlags) {
+  return (mInternalLoadFlags & aFlags) == aFlags;
+}
+
+bool nsDocShellLoadState::FirstParty() const { return mFirstParty; }
+
+void nsDocShellLoadState::SetFirstParty(bool aFirstParty) {
+  mFirstParty = aFirstParty;
+}
+
+bool nsDocShellLoadState::HasValidUserGestureActivation() const {
+  return mHasValidUserGestureActivation;
+}
+
+void nsDocShellLoadState::SetHasValidUserGestureActivation(
+    bool aHasValidUserGestureActivation) {
+  mHasValidUserGestureActivation = aHasValidUserGestureActivation;
+}
+
+const nsCString& nsDocShellLoadState::TypeHint() const { return mTypeHint; }
+
+void nsDocShellLoadState::SetTypeHint(const nsCString& aTypeHint) {
+  mTypeHint = aTypeHint;
+}
+
+const nsString& nsDocShellLoadState::FileName() const { return mFileName; }
+
+void nsDocShellLoadState::SetFileName(const nsAString& aFileName) {
+  MOZ_DIAGNOSTIC_ASSERT(aFileName.FindChar(char16_t(0)) == kNotFound,
+                        "The filename should never contain null characters");
+  mFileName = aFileName;
+}
+
+const nsCString& nsDocShellLoadState::GetEffectiveTriggeringRemoteType() const {
+  // Consider non-errorpage loads from session history as being triggred by the
+  // parent process, as we'll validate them against the history entry.
+  //
+  // NOTE: Keep this check in-sync with the session-history validation check in
+  // `DocumentLoadListener::Open`!
+  if (LoadIsFromSessionHistory() && LoadType() != LOAD_ERROR_PAGE) {
+    return NOT_REMOTE_TYPE;
+  }
+  return mTriggeringRemoteType;
+}
+
+void nsDocShellLoadState::SetTriggeringRemoteType(
+    const nsACString& aTriggeringRemoteType) {
+  MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess(), "only settable in parent");
+  mTriggeringRemoteType = aTriggeringRemoteType;
+}
+
+nsresult nsDocShellLoadState::SetupInheritingPrincipal(
+    BrowsingContext::Type aType,
+    const mozilla::OriginAttributes& aOriginAttributes) {
+  // We need a principalToInherit.
+  //
+  // If principalIsExplicit is not set there are 4 possibilities:
+  // (1) If the system principal or an expanded principal was passed
+  //     in and we're a typeContent docshell, inherit the principal
+  //     from the current document instead.
+  // (2) In all other cases when the principal passed in is not null,
+  //     use that principal.
+  // (3) If the caller has allowed inheriting from the current document,
+  //     or if we're being called from system code (eg chrome JS or pure
+  //     C++) then inheritPrincipal should be true and InternalLoad will get
+  //     a principal from the current document. If none of these things are
+  //     true, then
+  // (4) we don't pass a principal into the channel, and a principal will be
+  //     created later from the channel's internal data.
+  //
+  // If principalIsExplicit *is* set, there are 4 possibilities
+  // (1) If the system principal or an expanded principal was passed in
+  //     and we're a typeContent docshell, return an error.
+  // (2) In all other cases when the principal passed in is not null,
+  //     use that principal.
+  // (3) If the caller has allowed inheriting from the current document,
+  //     then inheritPrincipal should be true and InternalLoad will get
+  //     a principal from the current document. If none of these things are
+  //     true, then
+  // (4) we dont' pass a principal into the channel, and a principal will be
+  //     created later from the channel's internal data.
+  mPrincipalToInherit = mTriggeringPrincipal;
+  if (mPrincipalToInherit && aType != BrowsingContext::Type::Chrome) {
+    if (mPrincipalToInherit->IsSystemPrincipal()) {
+      if (mPrincipalIsExplicit) {
+        return NS_ERROR_DOM_SECURITY_ERR;
+      }
+      mPrincipalToInherit = nullptr;
+      mInheritPrincipal = true;
+    } else if (nsContentUtils::IsExpandedPrincipal(mPrincipalToInherit)) {
+      if (mPrincipalIsExplicit) {
+        return NS_ERROR_DOM_SECURITY_ERR;
+      }
+      // Don't inherit from the current page.  Just do the safe thing
+      // and pretend that we were loaded by a nullprincipal.
+      //
+      // We didn't inherit OriginAttributes here as ExpandedPrincipal doesn't
+      // have origin attributes.
+      mPrincipalToInherit = NullPrincipal::Create(aOriginAttributes);
+      mInheritPrincipal = false;
+    }
+  }
+
+  if (!mPrincipalToInherit && !mInheritPrincipal && !mPrincipalIsExplicit) {
+    // See if there's system or chrome JS code running
+    mInheritPrincipal = nsContentUtils::LegacyIsCallerChromeOrNativeCode();
+  }
+
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL) {
+    mInheritPrincipal = false;
+    // Create a new null principal URI based on our precursor principal.
+    nsCOMPtr<nsIURI> nullPrincipalURI =
+        NullPrincipal::CreateURI(mPrincipalToInherit);
+    // If mFirstParty is true and the pref 'privacy.firstparty.isolate' is
+    // enabled, we will set firstPartyDomain on the origin attributes.
+    OriginAttributes attrs(aOriginAttributes);
+    if (mFirstParty) {
+      attrs.SetFirstPartyDomain(true, nullPrincipalURI);
+    }
+    mPrincipalToInherit = NullPrincipal::Create(attrs, nullPrincipalURI);
+  }
+
+  return NS_OK;
+}
+
+nsresult nsDocShellLoadState::SetupTriggeringPrincipal(
+    const mozilla::OriginAttributes& aOriginAttributes) {
+  // If the triggeringPrincipal is not set, we first try to create a principal
+  // from the referrer, since the referrer URI reflects the web origin that
+  // triggered the load. If there is no referrer URI, we fall back to using the
+  // SystemPrincipal. It's safe to assume that no provided triggeringPrincipal
+  // and no referrer simulate a load that was triggered by the system. It's
+  // important to note that this block of code needs to appear *after* the block
+  // where we munge the principalToInherit, because otherwise we would never
+  // enter code blocks checking if the principalToInherit is null and we will
+  // end up with a wrong inheritPrincipal flag.
+  if (!mTriggeringPrincipal) {
+    if (mReferrerInfo) {
+      nsCOMPtr<nsIURI> referrer = mReferrerInfo->GetOriginalReferrer();
+      mTriggeringPrincipal =
+          BasePrincipal::CreateContentPrincipal(referrer, aOriginAttributes);
+
+      if (!mTriggeringPrincipal) {
+        return NS_ERROR_FAILURE;
+      }
+    } else {
+      mTriggeringPrincipal = nsContentUtils::GetSystemPrincipal();
+    }
+  }
+  return NS_OK;
+}
+
+void nsDocShellLoadState::CalculateLoadURIFlags() {
+  if (mInheritPrincipal) {
+    MOZ_ASSERT(
+        !mPrincipalToInherit || !mPrincipalToInherit->IsSystemPrincipal(),
+        "Should not inherit SystemPrincipal");
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_INHERIT_PRINCIPAL;
+  }
+
+  if (mReferrerInfo && !mReferrerInfo->GetSendReferrer()) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER;
+  }
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP) {
+    mInternalLoadFlags |=
+        nsDocShell::INTERNAL_LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+  }
+
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_FIRST_LOAD) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_FIRST_LOAD;
+  }
+
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_CLASSIFIER) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER;
+  }
+
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_FORCE_ALLOW_COOKIES) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_FORCE_ALLOW_COOKIES;
+  }
+
+  if (mLoadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_LOAD_URI_DELEGATE) {
+    mInternalLoadFlags |=
+        nsDocShell::INTERNAL_LOAD_FLAGS_BYPASS_LOAD_URI_DELEGATE;
+  }
+
+  if (!mSrcdocData.IsVoid()) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_IS_SRCDOC;
+  }
+
+  if (mForceAllowDataURI) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_FORCE_ALLOW_DATA_URI;
+  }
+
+  if (mOriginalFrameSrc) {
+    mInternalLoadFlags |= nsDocShell::INTERNAL_LOAD_FLAGS_ORIGINAL_FRAME_SRC;
+  }
+}
+
+nsLoadFlags nsDocShellLoadState::CalculateChannelLoadFlags(
+    BrowsingContext* aBrowsingContext, Maybe<bool> aUriModified,
+    Maybe<bool> aIsXFOError) {
+  MOZ_ASSERT(aBrowsingContext);
+
+  nsLoadFlags loadFlags = aBrowsingContext->GetDefaultLoadFlags();
+
+  if (FirstParty()) {
+    // tag first party URL loads
+    loadFlags |= nsIChannel::LOAD_INITIAL_DOCUMENT_URI;
+  }
+
+  const uint32_t loadType = LoadType();
+
+  // These values aren't available for loads initiated in the Parent process.
+  MOZ_ASSERT_IF(loadType == LOAD_HISTORY, aUriModified.isSome());
+  MOZ_ASSERT_IF(loadType == LOAD_ERROR_PAGE, aIsXFOError.isSome());
+
+  if (loadType == LOAD_ERROR_PAGE) {
+    // Error pages are LOAD_BACKGROUND, unless it's an
+    // XFO error for which we want an error page to load
+    // but additionally want the onload() event to fire.
+    if (!*aIsXFOError) {
+      loadFlags |= nsIChannel::LOAD_BACKGROUND;
+    }
+  }
+
+  // Mark the channel as being a document URI and allow content sniffing...
+  loadFlags |=
+      nsIChannel::LOAD_DOCUMENT_URI | nsIChannel::LOAD_CALL_CONTENT_SNIFFERS;
+
+  if (nsDocShell::SandboxFlagsImplyCookies(
+          aBrowsingContext->GetSandboxFlags())) {
+    loadFlags |= nsIRequest::LOAD_DOCUMENT_NEEDS_COOKIE;
+  }
+
+  // Load attributes depend on load type...
+  switch (loadType) {
+    case LOAD_HISTORY: {
+      // Only send VALIDATE_NEVER if mLSHE's URI was never changed via
+      // push/replaceState (bug 669671).
+      if (!*aUriModified) {
+        loadFlags |= nsIRequest::VALIDATE_NEVER;
+      }
+      break;
+    }
+
+    case LOAD_RELOAD_CHARSET_CHANGE_BYPASS_PROXY_AND_CACHE:
+    case LOAD_RELOAD_CHARSET_CHANGE_BYPASS_CACHE:
+      loadFlags |=
+          nsIRequest::LOAD_BYPASS_CACHE | nsIRequest::LOAD_FRESH_CONNECTION;
+      [[fallthrough]];
+
+    case LOAD_REFRESH:
+      loadFlags |= nsIRequest::VALIDATE_ALWAYS;
+      break;
+
+    case LOAD_NORMAL_BYPASS_CACHE:
+    case LOAD_NORMAL_BYPASS_PROXY:
+    case LOAD_NORMAL_BYPASS_PROXY_AND_CACHE:
+    case LOAD_RELOAD_BYPASS_CACHE:
+    case LOAD_RELOAD_BYPASS_PROXY:
+    case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
+    case LOAD_REPLACE_BYPASS_CACHE:
+      loadFlags |=
+          nsIRequest::LOAD_BYPASS_CACHE | nsIRequest::LOAD_FRESH_CONNECTION;
+      break;
+
+    case LOAD_RELOAD_NORMAL:
+      if (!StaticPrefs::
+              browser_soft_reload_only_force_validate_top_level_document()) {
+        loadFlags |= nsIRequest::VALIDATE_ALWAYS;
+        break;
+      }
+      [[fallthrough]];
+    case LOAD_NORMAL:
+    case LOAD_LINK:
+      // Set cache checking flags
+      switch (StaticPrefs::browser_cache_check_doc_frequency()) {
+        case 0:
+          loadFlags |= nsIRequest::VALIDATE_ONCE_PER_SESSION;
+          break;
+        case 1:
+          loadFlags |= nsIRequest::VALIDATE_ALWAYS;
+          break;
+        case 2:
+          loadFlags |= nsIRequest::VALIDATE_NEVER;
+          break;
+      }
+      break;
+  }
+
+  if (HasInternalLoadFlags(nsDocShell::INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER)) {
+    loadFlags |= nsIChannel::LOAD_BYPASS_URL_CLASSIFIER;
+  }
+
+  // If the user pressed shift-reload, then do not allow ServiceWorker
+  // interception to occur. See step 12.1 of the SW HandleFetch algorithm.
+  if (IsForceReloadType(loadType)) {
+    loadFlags |= nsIChannel::LOAD_BYPASS_SERVICE_WORKER;
+  }
+
+  return loadFlags;
+}
+
+const char* nsDocShellLoadState::ValidateWithOriginalState(
+    nsDocShellLoadState* aOriginalState) {
+  MOZ_ASSERT(mLoadIdentifier == aOriginalState->mLoadIdentifier);
+
+  // Check that `aOriginalState` is sufficiently similar to this state that
+  // they're performing the same load.
+  auto uriEq = [](nsIURI* a, nsIURI* b) -> bool {
+    bool eq = false;
+    return a == b || (a && b && NS_SUCCEEDED(a->Equals(b, &eq)) && eq);
+  };
+  if (!uriEq(mURI, aOriginalState->mURI)) {
+    return "URI";
+  }
+  if (!uriEq(mUnstrippedURI, aOriginalState->mUnstrippedURI)) {
+    return "UnstrippedURI";
+  }
+  if (!uriEq(mOriginalURI, aOriginalState->mOriginalURI)) {
+    return "OriginalURI";
+  }
+  if (!uriEq(mBaseURI, aOriginalState->mBaseURI)) {
+    return "BaseURI";
+  }
+
+  if (!mTriggeringPrincipal->Equals(aOriginalState->mTriggeringPrincipal)) {
+    return "TriggeringPrincipal";
+  }
+  if (mTriggeringSandboxFlags != aOriginalState->mTriggeringSandboxFlags) {
+    return "TriggeringSandboxFlags";
+  }
+  if (mTriggeringRemoteType != aOriginalState->mTriggeringRemoteType) {
+    return "TriggeringRemoteType";
+  }
+
+  if (mOriginalURIString != aOriginalState->mOriginalURIString) {
+    return "OriginalURIString";
+  }
+
+  if (mRemoteTypeOverride != aOriginalState->mRemoteTypeOverride) {
+    return "RemoteTypeOverride";
+  }
+
+  if (mSourceBrowsingContext.ContextId() !=
+      aOriginalState->mSourceBrowsingContext.ContextId()) {
+    return "SourceBrowsingContext";
+  }
+
+  // FIXME: Consider calculating less information in the target process so that
+  // we can validate more properties more easily.
+  // FIXME: Identify what other flags will not change when sent through a
+  // content process.
+
+  return nullptr;
+}
+
+DocShellLoadStateInit nsDocShellLoadState::Serialize(
+    mozilla::ipc::IProtocol* aActor) {
+  MOZ_ASSERT(aActor);
+  DocShellLoadStateInit loadState;
+  loadState.ResultPrincipalURI() = mResultPrincipalURI;
+  loadState.ResultPrincipalURIIsSome() = mResultPrincipalURIIsSome;
+  loadState.KeepResultPrincipalURIIfSet() = mKeepResultPrincipalURIIfSet;
+  loadState.LoadReplace() = mLoadReplace;
+  loadState.InheritPrincipal() = mInheritPrincipal;
+  loadState.PrincipalIsExplicit() = mPrincipalIsExplicit;
+  loadState.ForceAllowDataURI() = mForceAllowDataURI;
+  loadState.IsExemptFromHTTPSOnlyMode() = mIsExemptFromHTTPSOnlyMode;
+  loadState.OriginalFrameSrc() = mOriginalFrameSrc;
+  loadState.IsFormSubmission() = mIsFormSubmission;
+  loadState.LoadType() = mLoadType;
+  loadState.Target() = mTarget;
+  loadState.TargetBrowsingContext() = mTargetBrowsingContext;
+  loadState.LoadFlags() = mLoadFlags;
+  loadState.InternalLoadFlags() = mInternalLoadFlags;
+  loadState.FirstParty() = mFirstParty;
+  loadState.HasValidUserGestureActivation() = mHasValidUserGestureActivation;
+  loadState.AllowFocusMove() = mAllowFocusMove;
+  loadState.TypeHint() = mTypeHint;
+  loadState.FileName() = mFileName;
+  loadState.IsFromProcessingFrameAttributes() =
+      mIsFromProcessingFrameAttributes;
+  loadState.URI() = mURI;
+  loadState.OriginalURI() = mOriginalURI;
+  loadState.SourceBrowsingContext() = mSourceBrowsingContext;
+  loadState.BaseURI() = mBaseURI;
+  loadState.TriggeringPrincipal() = mTriggeringPrincipal;
+  loadState.PrincipalToInherit() = mPrincipalToInherit;
+  loadState.PartitionedPrincipalToInherit() = mPartitionedPrincipalToInherit;
+  loadState.TriggeringSandboxFlags() = mTriggeringSandboxFlags;
+  loadState.TriggeringRemoteType() = mTriggeringRemoteType;
+  loadState.Csp() = mCsp;
+  loadState.OriginalURIString() = mOriginalURIString;
+  loadState.CancelContentJSEpoch() = mCancelContentJSEpoch;
+  loadState.ReferrerInfo() = mReferrerInfo;
+  loadState.PostDataStream() = mPostDataStream;
+  loadState.HeadersStream() = mHeadersStream;
+  loadState.SrcdocData() = mSrcdocData;
+  loadState.ResultPrincipalURI() = mResultPrincipalURI;
+  loadState.LoadIdentifier() = mLoadIdentifier;
+  loadState.ChannelInitialized() = mChannelInitialized;
+  loadState.IsMetaRefresh() = mIsMetaRefresh;
+  if (mLoadingSessionHistoryInfo) {
+    loadState.loadingSessionHistoryInfo().emplace(*mLoadingSessionHistoryInfo);
+  }
+  loadState.UnstrippedURI() = mUnstrippedURI;
+  loadState.RemoteTypeOverride() = mRemoteTypeOverride;
+
+  if (XRE_IsParentProcess()) {
+    mozilla::ipc::IToplevelProtocol* top = aActor->ToplevelProtocol();
+    MOZ_RELEASE_ASSERT(top &&
+                           top->GetProtocolId() ==
+                               mozilla::ipc::ProtocolId::PContentMsgStart &&
+                           top->GetSide() == mozilla::ipc::ParentSide,
+                       "nsDocShellLoadState must be sent over PContent");
+    ContentParent* cp = static_cast<ContentParent*>(top);
+    cp->StorePendingLoadState(this);
+  }
+
+  return loadState;
+}
+
+nsIURI* nsDocShellLoadState::GetUnstrippedURI() const { return mUnstrippedURI; }
+
+void nsDocShellLoadState::SetUnstrippedURI(nsIURI* aUnstrippedURI) {
+  mUnstrippedURI = aUnstrippedURI;
+}