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-rw-r--r--docshell/base/BrowsingContextGroup.cpp579
1 files changed, 579 insertions, 0 deletions
diff --git a/docshell/base/BrowsingContextGroup.cpp b/docshell/base/BrowsingContextGroup.cpp
new file mode 100644
index 0000000000..66ef235271
--- /dev/null
+++ b/docshell/base/BrowsingContextGroup.cpp
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+/* -*- 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 "mozilla/dom/BrowsingContextGroup.h"
+
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/InputTaskManager.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/dom/BrowsingContextBinding.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/ThrottledEventQueue.h"
+#include "nsFocusManager.h"
+#include "nsTHashMap.h"
+
+namespace mozilla {
+namespace dom {
+
+// Maximum number of successive dialogs before we prompt users to disable
+// dialogs for this window.
+#define MAX_SUCCESSIVE_DIALOG_COUNT 5
+
+static StaticRefPtr<BrowsingContextGroup> sChromeGroup;
+
+static StaticAutoPtr<nsTHashMap<uint64_t, RefPtr<BrowsingContextGroup>>>
+ sBrowsingContextGroups;
+
+already_AddRefed<BrowsingContextGroup> BrowsingContextGroup::GetOrCreate(
+ uint64_t aId) {
+ if (!sBrowsingContextGroups) {
+ sBrowsingContextGroups =
+ new nsTHashMap<nsUint64HashKey, RefPtr<BrowsingContextGroup>>();
+ ClearOnShutdown(&sBrowsingContextGroups);
+ }
+
+ return do_AddRef(sBrowsingContextGroups->LookupOrInsertWith(
+ aId, [&aId] { return do_AddRef(new BrowsingContextGroup(aId)); }));
+}
+
+already_AddRefed<BrowsingContextGroup> BrowsingContextGroup::GetExisting(
+ uint64_t aId) {
+ if (sBrowsingContextGroups) {
+ return do_AddRef(sBrowsingContextGroups->Get(aId));
+ }
+ return nullptr;
+}
+
+// Only use 53 bits for the BrowsingContextGroup ID.
+static constexpr uint64_t kBrowsingContextGroupIdTotalBits = 53;
+static constexpr uint64_t kBrowsingContextGroupIdProcessBits = 22;
+static constexpr uint64_t kBrowsingContextGroupIdFlagBits = 1;
+static constexpr uint64_t kBrowsingContextGroupIdBits =
+ kBrowsingContextGroupIdTotalBits - kBrowsingContextGroupIdProcessBits -
+ kBrowsingContextGroupIdFlagBits;
+
+// IDs for the relevant flags
+static constexpr uint64_t kPotentiallyCrossOriginIsolatedFlag = 0x1;
+
+// The next ID value which will be used.
+static uint64_t sNextBrowsingContextGroupId = 1;
+
+// Generate the next ID with the given flags.
+static uint64_t GenerateBrowsingContextGroupId(uint64_t aFlags) {
+ MOZ_RELEASE_ASSERT(aFlags < (uint64_t(1) << kBrowsingContextGroupIdFlagBits));
+ uint64_t childId = XRE_IsContentProcess()
+ ? ContentChild::GetSingleton()->GetID()
+ : uint64_t(0);
+ MOZ_RELEASE_ASSERT(childId <
+ (uint64_t(1) << kBrowsingContextGroupIdProcessBits));
+ uint64_t id = sNextBrowsingContextGroupId++;
+ MOZ_RELEASE_ASSERT(id < (uint64_t(1) << kBrowsingContextGroupIdBits));
+
+ return (childId << (kBrowsingContextGroupIdBits +
+ kBrowsingContextGroupIdFlagBits)) |
+ (id << kBrowsingContextGroupIdFlagBits) | aFlags;
+}
+
+// Extract flags from the given ID.
+static uint64_t GetBrowsingContextGroupIdFlags(uint64_t aId) {
+ return aId & ((uint64_t(1) << kBrowsingContextGroupIdFlagBits) - 1);
+}
+
+uint64_t BrowsingContextGroup::CreateId(bool aPotentiallyCrossOriginIsolated) {
+ // We encode the potentially cross-origin isolated bit within the ID so that
+ // the information can be recovered whenever the group needs to be re-created
+ // due to e.g. being garbage-collected.
+ //
+ // In the future if we end up needing more complex information stored within
+ // the ID, we can consider converting it to a more complex type, like a
+ // string.
+ uint64_t flags =
+ aPotentiallyCrossOriginIsolated ? kPotentiallyCrossOriginIsolatedFlag : 0;
+ uint64_t id = GenerateBrowsingContextGroupId(flags);
+ MOZ_ASSERT(GetBrowsingContextGroupIdFlags(id) == flags);
+ return id;
+}
+
+already_AddRefed<BrowsingContextGroup> BrowsingContextGroup::Create(
+ bool aPotentiallyCrossOriginIsolated) {
+ return GetOrCreate(CreateId(aPotentiallyCrossOriginIsolated));
+}
+
+BrowsingContextGroup::BrowsingContextGroup(uint64_t aId) : mId(aId) {
+ mTimerEventQueue = ThrottledEventQueue::Create(
+ GetMainThreadSerialEventTarget(), "BrowsingContextGroup timer queue");
+
+ mWorkerEventQueue = ThrottledEventQueue::Create(
+ GetMainThreadSerialEventTarget(), "BrowsingContextGroup worker queue");
+}
+
+void BrowsingContextGroup::Register(nsISupports* aContext) {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(aContext);
+ mContexts.Insert(aContext);
+}
+
+void BrowsingContextGroup::Unregister(nsISupports* aContext) {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(aContext);
+ mContexts.Remove(aContext);
+
+ MaybeDestroy();
+}
+
+void BrowsingContextGroup::EnsureHostProcess(ContentParent* aProcess) {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(this != sChromeGroup,
+ "cannot have content host for chrome group");
+ MOZ_DIAGNOSTIC_ASSERT(aProcess->GetRemoteType() != PREALLOC_REMOTE_TYPE,
+ "cannot use preallocated process as host");
+ MOZ_DIAGNOSTIC_ASSERT(!aProcess->GetRemoteType().IsEmpty(),
+ "host process must have remote type");
+
+ // XXX: The diagnostic crashes in bug 1816025 seemed to come through caller
+ // ContentParent::GetNewOrUsedLaunchingBrowserProcess where we already
+ // did AssertAlive, so IsDead should be irrelevant here. Still it reads
+ // wrong that we ever might do AddBrowsingContextGroup if aProcess->IsDead().
+ if (aProcess->IsDead() ||
+ mHosts.WithEntryHandle(aProcess->GetRemoteType(), [&](auto&& entry) {
+ if (entry) {
+ // We know from bug 1816025 that this happens quite often and we have
+ // bug 1815480 on file that should harden the entire flow. But in the
+ // meantime we can just live with NOT replacing the found host
+ // process with a new one here if it is still alive.
+ MOZ_ASSERT(
+ entry.Data() == aProcess,
+ "There's already another host process for this remote type");
+ if (!entry.Data()->IsShuttingDown()) {
+ return false;
+ }
+ }
+
+ // This process wasn't already marked as our host, so insert it (or
+ // update if the old process is shutting down), and begin subscribing,
+ // unless the process is still launching.
+ entry.InsertOrUpdate(do_AddRef(aProcess));
+
+ return true;
+ })) {
+ aProcess->AddBrowsingContextGroup(this);
+ }
+}
+
+void BrowsingContextGroup::RemoveHostProcess(ContentParent* aProcess) {
+ MOZ_DIAGNOSTIC_ASSERT(aProcess);
+ MOZ_DIAGNOSTIC_ASSERT(aProcess->GetRemoteType() != PREALLOC_REMOTE_TYPE);
+ auto entry = mHosts.Lookup(aProcess->GetRemoteType());
+ if (entry && entry.Data() == aProcess) {
+ entry.Remove();
+ }
+}
+
+static void CollectContextInitializers(
+ Span<RefPtr<BrowsingContext>> aContexts,
+ nsTArray<SyncedContextInitializer>& aInits) {
+ // The order that we record these initializers is important, as it will keep
+ // the order that children are attached to their parent in the newly connected
+ // content process consistent.
+ for (auto& context : aContexts) {
+ aInits.AppendElement(context->GetIPCInitializer());
+ for (const auto& window : context->GetWindowContexts()) {
+ aInits.AppendElement(window->GetIPCInitializer());
+ CollectContextInitializers(window->Children(), aInits);
+ }
+ }
+}
+
+void BrowsingContextGroup::Subscribe(ContentParent* aProcess) {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(aProcess && !aProcess->IsLaunching());
+ MOZ_DIAGNOSTIC_ASSERT(aProcess->GetRemoteType() != PREALLOC_REMOTE_TYPE);
+
+ // Check if we're already subscribed to this process.
+ if (!mSubscribers.EnsureInserted(aProcess)) {
+ return;
+ }
+
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+ // If the process is already marked as dead, we won't be the host, but may
+ // still need to subscribe to the process due to creating a popup while
+ // shutting down.
+ if (!aProcess->IsDead()) {
+ auto hostEntry = mHosts.Lookup(aProcess->GetRemoteType());
+ MOZ_DIAGNOSTIC_ASSERT(hostEntry && hostEntry.Data() == aProcess,
+ "Cannot subscribe a non-host process");
+ }
+#endif
+
+ // FIXME: This won't send non-discarded children of discarded BCs, but those
+ // BCs will be in the process of being destroyed anyway.
+ // FIXME: Prevent that situation from occuring.
+ nsTArray<SyncedContextInitializer> inits(mContexts.Count());
+ CollectContextInitializers(mToplevels, inits);
+
+ // Send all of our contexts to the target content process.
+ Unused << aProcess->SendRegisterBrowsingContextGroup(Id(), inits);
+
+ // If the focused or active BrowsingContexts belong in this group, tell the
+ // newly subscribed process.
+ if (nsFocusManager* fm = nsFocusManager::GetFocusManager()) {
+ BrowsingContext* focused = fm->GetFocusedBrowsingContextInChrome();
+ if (focused && focused->Group() != this) {
+ focused = nullptr;
+ }
+ BrowsingContext* active = fm->GetActiveBrowsingContextInChrome();
+ if (active && active->Group() != this) {
+ active = nullptr;
+ }
+
+ if (focused || active) {
+ Unused << aProcess->SendSetupFocusedAndActive(
+ focused, fm->GetActionIdForFocusedBrowsingContextInChrome(), active,
+ fm->GetActionIdForActiveBrowsingContextInChrome());
+ }
+ }
+}
+
+void BrowsingContextGroup::Unsubscribe(ContentParent* aProcess) {
+ MOZ_DIAGNOSTIC_ASSERT(aProcess);
+ MOZ_DIAGNOSTIC_ASSERT(aProcess->GetRemoteType() != PREALLOC_REMOTE_TYPE);
+ mSubscribers.Remove(aProcess);
+ aProcess->RemoveBrowsingContextGroup(this);
+
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+ auto hostEntry = mHosts.Lookup(aProcess->GetRemoteType());
+ MOZ_DIAGNOSTIC_ASSERT(!hostEntry || hostEntry.Data() != aProcess,
+ "Unsubscribing existing host entry");
+#endif
+}
+
+ContentParent* BrowsingContextGroup::GetHostProcess(
+ const nsACString& aRemoteType) {
+ return mHosts.GetWeak(aRemoteType);
+}
+
+void BrowsingContextGroup::UpdateToplevelsSuspendedIfNeeded() {
+ if (!StaticPrefs::dom_suspend_inactive_enabled()) {
+ return;
+ }
+
+ mToplevelsSuspended = ShouldSuspendAllTopLevelContexts();
+ for (const auto& context : mToplevels) {
+ nsPIDOMWindowOuter* outer = context->GetDOMWindow();
+ if (!outer) {
+ continue;
+ }
+ nsCOMPtr<nsPIDOMWindowInner> inner = outer->GetCurrentInnerWindow();
+ if (!inner) {
+ continue;
+ }
+ if (mToplevelsSuspended && !inner->GetWasSuspendedByGroup()) {
+ inner->Suspend();
+ inner->SetWasSuspendedByGroup(true);
+ } else if (!mToplevelsSuspended && inner->GetWasSuspendedByGroup()) {
+ inner->Resume();
+ inner->SetWasSuspendedByGroup(false);
+ }
+ }
+}
+
+bool BrowsingContextGroup::ShouldSuspendAllTopLevelContexts() const {
+ for (const auto& context : mToplevels) {
+ if (!context->InactiveForSuspend()) {
+ return false;
+ }
+ }
+ return true;
+}
+
+BrowsingContextGroup::~BrowsingContextGroup() { Destroy(); }
+
+void BrowsingContextGroup::Destroy() {
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+ if (mDestroyed) {
+ MOZ_DIAGNOSTIC_ASSERT(mHosts.Count() == 0);
+ MOZ_DIAGNOSTIC_ASSERT(mSubscribers.Count() == 0);
+ MOZ_DIAGNOSTIC_ASSERT_IF(sBrowsingContextGroups,
+ !sBrowsingContextGroups->Contains(Id()) ||
+ *sBrowsingContextGroups->Lookup(Id()) != this);
+ }
+ mDestroyed = true;
+#endif
+
+ // Make sure to call `RemoveBrowsingContextGroup` for every entry in both
+ // `mHosts` and `mSubscribers`. This will visit most entries twice, but
+ // `RemoveBrowsingContextGroup` is safe to call multiple times.
+ for (const auto& entry : mHosts.Values()) {
+ entry->RemoveBrowsingContextGroup(this);
+ }
+ for (const auto& key : mSubscribers) {
+ key->RemoveBrowsingContextGroup(this);
+ }
+ mHosts.Clear();
+ mSubscribers.Clear();
+
+ if (sBrowsingContextGroups) {
+ sBrowsingContextGroups->Remove(Id());
+ }
+}
+
+void BrowsingContextGroup::AddKeepAlive() {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
+ mKeepAliveCount++;
+}
+
+void BrowsingContextGroup::RemoveKeepAlive() {
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(mKeepAliveCount > 0);
+ MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
+ mKeepAliveCount--;
+
+ MaybeDestroy();
+}
+
+auto BrowsingContextGroup::MakeKeepAlivePtr() -> KeepAlivePtr {
+ AddKeepAlive();
+ return KeepAlivePtr{do_AddRef(this).take()};
+}
+
+void BrowsingContextGroup::MaybeDestroy() {
+ // Once there are no synced contexts referencing a `BrowsingContextGroup`, we
+ // can clear subscribers and destroy this group. We only do this in the parent
+ // process, as it will orchestrate destruction of BCGs in content processes.
+ if (XRE_IsParentProcess() && mContexts.IsEmpty() && mKeepAliveCount == 0 &&
+ this != sChromeGroup) {
+ Destroy();
+
+ // We may have been deleted here, as `Destroy()` will clear references. Do
+ // not access any members at this point.
+ }
+}
+
+void BrowsingContextGroup::ChildDestroy() {
+ MOZ_DIAGNOSTIC_ASSERT(XRE_IsContentProcess());
+ MOZ_DIAGNOSTIC_ASSERT(!mDestroyed);
+ MOZ_DIAGNOSTIC_ASSERT(mContexts.IsEmpty());
+ Destroy();
+}
+
+nsISupports* BrowsingContextGroup::GetParentObject() const {
+ return xpc::NativeGlobal(xpc::PrivilegedJunkScope());
+}
+
+JSObject* BrowsingContextGroup::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return BrowsingContextGroup_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsresult BrowsingContextGroup::QueuePostMessageEvent(
+ already_AddRefed<nsIRunnable>&& aRunnable) {
+ if (StaticPrefs::dom_separate_event_queue_for_post_message_enabled()) {
+ if (!mPostMessageEventQueue) {
+ nsCOMPtr<nsISerialEventTarget> target = GetMainThreadSerialEventTarget();
+ mPostMessageEventQueue = ThrottledEventQueue::Create(
+ target, "PostMessage Queue",
+ nsIRunnablePriority::PRIORITY_DEFERRED_TIMERS);
+ nsresult rv = mPostMessageEventQueue->SetIsPaused(false);
+ MOZ_ALWAYS_SUCCEEDS(rv);
+ }
+
+ // Ensure the queue is enabled
+ if (mPostMessageEventQueue->IsPaused()) {
+ nsresult rv = mPostMessageEventQueue->SetIsPaused(false);
+ MOZ_ALWAYS_SUCCEEDS(rv);
+ }
+
+ if (mPostMessageEventQueue) {
+ mPostMessageEventQueue->Dispatch(std::move(aRunnable),
+ NS_DISPATCH_NORMAL);
+ return NS_OK;
+ }
+ }
+ return NS_ERROR_FAILURE;
+}
+
+void BrowsingContextGroup::FlushPostMessageEvents() {
+ if (StaticPrefs::dom_separate_event_queue_for_post_message_enabled()) {
+ if (mPostMessageEventQueue) {
+ nsresult rv = mPostMessageEventQueue->SetIsPaused(true);
+ MOZ_ALWAYS_SUCCEEDS(rv);
+ nsCOMPtr<nsIRunnable> event;
+ while ((event = mPostMessageEventQueue->GetEvent())) {
+ NS_DispatchToMainThread(event.forget());
+ }
+ }
+ }
+}
+
+bool BrowsingContextGroup::HasActiveBC() {
+ for (auto& topLevelBC : Toplevels()) {
+ if (topLevelBC->IsActive()) {
+ return true;
+ }
+ }
+ return false;
+}
+
+void BrowsingContextGroup::IncInputEventSuspensionLevel() {
+ MOZ_ASSERT(StaticPrefs::dom_input_events_canSuspendInBCG_enabled());
+ if (!mHasIncreasedInputTaskManagerSuspensionLevel && HasActiveBC()) {
+ IncInputTaskManagerSuspensionLevel();
+ }
+ ++mInputEventSuspensionLevel;
+}
+
+void BrowsingContextGroup::DecInputEventSuspensionLevel() {
+ MOZ_ASSERT(StaticPrefs::dom_input_events_canSuspendInBCG_enabled());
+ --mInputEventSuspensionLevel;
+ if (!mInputEventSuspensionLevel &&
+ mHasIncreasedInputTaskManagerSuspensionLevel) {
+ DecInputTaskManagerSuspensionLevel();
+ }
+}
+
+void BrowsingContextGroup::DecInputTaskManagerSuspensionLevel() {
+ MOZ_ASSERT(StaticPrefs::dom_input_events_canSuspendInBCG_enabled());
+ MOZ_ASSERT(mHasIncreasedInputTaskManagerSuspensionLevel);
+
+ InputTaskManager::Get()->DecSuspensionLevel();
+ mHasIncreasedInputTaskManagerSuspensionLevel = false;
+}
+
+void BrowsingContextGroup::IncInputTaskManagerSuspensionLevel() {
+ MOZ_ASSERT(StaticPrefs::dom_input_events_canSuspendInBCG_enabled());
+ MOZ_ASSERT(!mHasIncreasedInputTaskManagerSuspensionLevel);
+ MOZ_ASSERT(HasActiveBC());
+
+ InputTaskManager::Get()->IncSuspensionLevel();
+ mHasIncreasedInputTaskManagerSuspensionLevel = true;
+}
+
+void BrowsingContextGroup::UpdateInputTaskManagerIfNeeded(bool aIsActive) {
+ MOZ_ASSERT(StaticPrefs::dom_input_events_canSuspendInBCG_enabled());
+ if (!aIsActive) {
+ if (mHasIncreasedInputTaskManagerSuspensionLevel) {
+ MOZ_ASSERT(mInputEventSuspensionLevel > 0);
+ if (!HasActiveBC()) {
+ DecInputTaskManagerSuspensionLevel();
+ }
+ }
+ } else {
+ if (mInputEventSuspensionLevel &&
+ !mHasIncreasedInputTaskManagerSuspensionLevel) {
+ IncInputTaskManagerSuspensionLevel();
+ }
+ }
+}
+
+/* static */
+BrowsingContextGroup* BrowsingContextGroup::GetChromeGroup() {
+ MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
+ if (!sChromeGroup && XRE_IsParentProcess()) {
+ sChromeGroup = BrowsingContextGroup::Create();
+ ClearOnShutdown(&sChromeGroup);
+ }
+
+ return sChromeGroup;
+}
+
+void BrowsingContextGroup::GetDocGroups(nsTArray<DocGroup*>& aDocGroups) {
+ MOZ_ASSERT(NS_IsMainThread());
+ AppendToArray(aDocGroups, mDocGroups.Values());
+}
+
+already_AddRefed<DocGroup> BrowsingContextGroup::AddDocument(
+ const nsACString& aKey, Document* aDocument) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ RefPtr<DocGroup>& docGroup = mDocGroups.LookupOrInsertWith(
+ aKey, [&] { return DocGroup::Create(this, aKey); });
+
+ docGroup->AddDocument(aDocument);
+ return do_AddRef(docGroup);
+}
+
+void BrowsingContextGroup::RemoveDocument(Document* aDocument,
+ DocGroup* aDocGroup) {
+ MOZ_ASSERT(NS_IsMainThread());
+ RefPtr<DocGroup> docGroup = aDocGroup;
+ // Removing the last document in DocGroup might decrement the
+ // DocGroup BrowsingContextGroup's refcount to 0.
+ RefPtr<BrowsingContextGroup> kungFuDeathGrip(this);
+ docGroup->RemoveDocument(aDocument);
+
+ if (docGroup->IsEmpty()) {
+ mDocGroups.Remove(docGroup->GetKey());
+ }
+}
+
+already_AddRefed<BrowsingContextGroup> BrowsingContextGroup::Select(
+ WindowContext* aParent, BrowsingContext* aOpener) {
+ if (aParent) {
+ return do_AddRef(aParent->Group());
+ }
+ if (aOpener) {
+ return do_AddRef(aOpener->Group());
+ }
+ return Create();
+}
+
+void BrowsingContextGroup::GetAllGroups(
+ nsTArray<RefPtr<BrowsingContextGroup>>& aGroups) {
+ aGroups.Clear();
+ if (!sBrowsingContextGroups) {
+ return;
+ }
+
+ aGroups = ToArray(sBrowsingContextGroups->Values());
+}
+
+// For tests only.
+void BrowsingContextGroup::ResetDialogAbuseState() {
+ mDialogAbuseCount = 0;
+ // Reset the timer.
+ mLastDialogQuitTime =
+ TimeStamp::Now() -
+ TimeDuration::FromSeconds(DEFAULT_SUCCESSIVE_DIALOG_TIME_LIMIT);
+}
+
+bool BrowsingContextGroup::DialogsAreBeingAbused() {
+ if (mLastDialogQuitTime.IsNull() || nsContentUtils::IsCallerChrome()) {
+ return false;
+ }
+
+ TimeDuration dialogInterval(TimeStamp::Now() - mLastDialogQuitTime);
+ if (dialogInterval.ToSeconds() <
+ Preferences::GetInt("dom.successive_dialog_time_limit",
+ DEFAULT_SUCCESSIVE_DIALOG_TIME_LIMIT)) {
+ mDialogAbuseCount++;
+
+ return PopupBlocker::GetPopupControlState() > PopupBlocker::openAllowed ||
+ mDialogAbuseCount > MAX_SUCCESSIVE_DIALOG_COUNT;
+ }
+
+ // Reset the abuse counter
+ mDialogAbuseCount = 0;
+
+ return false;
+}
+
+bool BrowsingContextGroup::IsPotentiallyCrossOriginIsolated() {
+ return GetBrowsingContextGroupIdFlags(mId) &
+ kPotentiallyCrossOriginIsolatedFlag;
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(BrowsingContextGroup, mContexts,
+ mToplevels, mHosts, mSubscribers,
+ mTimerEventQueue, mWorkerEventQueue,
+ mDocGroups)
+
+} // namespace dom
+} // namespace mozilla