Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 7728 insertions, 0 deletions

diff --git a/dom/base/nsGlobalWindowInner.cpp b/dom/base/nsGlobalWindowInner.cpp
new file mode 100644
index 0000000000..8b69389790
--- /dev/null
+++ b/dom/base/nsGlobalWindowInner.cpp
@@ -0,0 +1,7728 @@
+/* -*- 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 "nsGlobalWindowInner.h"
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cstdint>
+#include <new>
+#include <type_traits>
+#include <utility>
+#include "AudioChannelService.h"
+#include "AutoplayPolicy.h"
+#include "Crypto.h"
+#include "MainThreadUtils.h"
+#include "Navigator.h"
+#include "PaintWorkletImpl.h"
+#include "SessionStorageCache.h"
+#include "Units.h"
+#include "VRManagerChild.h"
+#include "WindowDestroyedEvent.h"
+#include "WindowNamedPropertiesHandler.h"
+#include "js/ComparisonOperators.h"
+#include "js/CompileOptions.h"
+#include "js/friend/PerformanceHint.h"
+#include "js/Id.h"
+#include "js/loader/LoadedScript.h"
+#include "js/PropertyAndElement.h"  // JS_DefineProperty, JS_GetProperty
+#include "js/PropertyDescriptor.h"
+#include "js/RealmOptions.h"
+#include "js/RootingAPI.h"
+#include "js/TypeDecls.h"
+#include "js/Value.h"
+#include "js/Warnings.h"
+#include "js/shadow/String.h"
+#include "jsapi.h"
+#include "jsfriendapi.h"
+#include "mozIDOMWindow.h"
+#include "moz_external_vr.h"
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/ArrayIterator.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/BaseProfilerMarkersPrerequisites.h"
+#include "mozilla/BasicEvents.h"
+#include "mozilla/CallState.h"
+#include "mozilla/CycleCollectedJSContext.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/EventListenerManager.h"
+#include "mozilla/EventQueue.h"
+#include "mozilla/ExtensionPolicyService.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/FlushType.h"
+#include "mozilla/Likely.h"
+#include "mozilla/LinkedList.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/Logging.h"
+#include "mozilla/MacroForEach.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/OwningNonNull.h"
+#include "mozilla/PermissionDelegateHandler.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/ProcessHangMonitor.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/Result.h"
+#include "mozilla/ScrollTypes.h"
+#include "mozilla/Components.h"
+#include "mozilla/SizeOfState.h"
+#include "mozilla/Span.h"
+#include "mozilla/SpinEventLoopUntil.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/StaticPrefs_browser.h"
+#include "mozilla/StaticPrefs_docshell.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_extensions.h"
+#include "mozilla/StaticPrefs_privacy.h"
+#include "mozilla/StorageAccess.h"
+#include "mozilla/StoragePrincipalHelper.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/TelemetryHistogramEnums.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/AudioContext.h"
+#include "mozilla/dom/AutoEntryScript.h"
+#include "mozilla/dom/BarProps.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/BrowserChild.h"
+#include "mozilla/dom/BrowsingContext.h"
+#include "mozilla/dom/CSPEvalChecker.h"
+#include "mozilla/dom/CallbackDebuggerNotification.h"
+#include "mozilla/dom/ChromeMessageBroadcaster.h"
+#include "mozilla/dom/ClientInfo.h"
+#include "mozilla/dom/ClientManager.h"
+#include "mozilla/dom/ClientSource.h"
+#include "mozilla/dom/ClientState.h"
+#include "mozilla/dom/ClientsBinding.h"
+#include "mozilla/dom/Console.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentFrameMessageManager.h"
+#include "mozilla/dom/ContentMediaController.h"
+#include "mozilla/dom/CustomElementRegistry.h"
+#include "mozilla/dom/DebuggerNotification.h"
+#include "mozilla/dom/DebuggerNotificationBinding.h"
+#include "mozilla/dom/DebuggerNotificationManager.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/DocumentInlines.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/EventTarget.h"
+#include "mozilla/dom/External.h"
+#include "mozilla/dom/Fetch.h"
+#include "mozilla/dom/Gamepad.h"
+#include "mozilla/dom/GamepadHandle.h"
+#include "mozilla/dom/GamepadManager.h"
+#include "mozilla/dom/HashChangeEvent.h"
+#include "mozilla/dom/HashChangeEventBinding.h"
+#include "mozilla/dom/IDBFactory.h"
+#include "mozilla/dom/IdleRequest.h"
+#include "mozilla/dom/ImageBitmap.h"
+#include "mozilla/dom/ImageBitmapSource.h"
+#include "mozilla/dom/InstallTriggerBinding.h"
+#include "mozilla/dom/IntlUtils.h"
+#include "mozilla/dom/JSExecutionContext.h"
+#include "mozilla/dom/LSObject.h"
+#include "mozilla/dom/LocalStorage.h"
+#include "mozilla/dom/LocalStorageCommon.h"
+#include "mozilla/dom/Location.h"
+#include "mozilla/dom/MediaDevices.h"
+#include "mozilla/dom/MediaKeys.h"
+#include "mozilla/dom/NavigatorBinding.h"
+#include "mozilla/dom/Nullable.h"
+#include "mozilla/dom/PartitionedLocalStorage.h"
+#include "mozilla/dom/Performance.h"
+#include "mozilla/dom/PerformanceMainThread.h"
+#include "mozilla/dom/PopStateEvent.h"
+#include "mozilla/dom/PopStateEventBinding.h"
+#include "mozilla/dom/PopupBlocker.h"
+#include "mozilla/dom/PrimitiveConversions.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/RootedDictionary.h"
+#include "mozilla/dom/WebTaskSchedulerMainThread.h"
+#include "mozilla/dom/ScriptLoader.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/ServiceWorker.h"
+#include "mozilla/dom/ServiceWorkerDescriptor.h"
+#include "mozilla/dom/ServiceWorkerRegistration.h"
+#include "mozilla/dom/SessionStorageManager.h"
+#include "mozilla/dom/SharedWorker.h"
+#include "mozilla/dom/Storage.h"
+#include "mozilla/dom/StorageEvent.h"
+#include "mozilla/dom/StorageEventBinding.h"
+#include "mozilla/dom/StorageNotifierService.h"
+#include "mozilla/dom/StorageUtils.h"
+#include "mozilla/dom/TabMessageTypes.h"
+#include "mozilla/dom/Timeout.h"
+#include "mozilla/dom/TimeoutHandler.h"
+#include "mozilla/dom/TimeoutManager.h"
+#include "mozilla/dom/ToJSValue.h"
+#include "mozilla/dom/VRDisplay.h"
+#include "mozilla/dom/VRDisplayEvent.h"
+#include "mozilla/dom/VRDisplayEventBinding.h"
+#include "mozilla/dom/VREventObserver.h"
+#include "mozilla/dom/VisualViewport.h"
+#include "mozilla/dom/WebIDLGlobalNameHash.h"
+#include "mozilla/dom/WindowBinding.h"
+#include "mozilla/dom/WindowContext.h"
+#include "mozilla/dom/WindowGlobalChild.h"
+#include "mozilla/dom/WindowProxyHolder.h"
+#include "mozilla/dom/WorkerCommon.h"
+#include "mozilla/dom/Worklet.h"
+#include "mozilla/dom/XRPermissionRequest.h"
+#include "mozilla/dom/cache/CacheStorage.h"
+#include "mozilla/dom/cache/Types.h"
+#include "mozilla/glean/bindings/Glean.h"
+#include "mozilla/glean/bindings/GleanPings.h"
+#include "mozilla/extensions/WebExtensionPolicy.h"
+#include "mozilla/fallible.h"
+#include "mozilla/gfx/BasePoint.h"
+#include "mozilla/gfx/BaseRect.h"
+#include "mozilla/gfx/BaseSize.h"
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/gfx/Types.h"
+#include "mozilla/intl/LocaleService.h"
+#include "mozilla/ipc/BackgroundUtils.h"
+#include "mozilla/ipc/PBackgroundSharedTypes.h"
+#include "mozilla/net/CookieJarSettings.h"
+#include "nsAtom.h"
+#include "nsBaseHashtable.h"
+#include "nsCCUncollectableMarker.h"
+#include "nsCOMPtr.h"
+#include "nsCRT.h"
+#include "nsCRTGlue.h"
+#include "nsCanvasFrame.h"
+#include "nsCharTraits.h"
+#include "nsCheapSets.h"
+#include "nsContentUtils.h"
+#include "nsCoord.h"
+#include "nsCycleCollectionNoteChild.h"
+#include "nsCycleCollectionTraversalCallback.h"
+#include "nsDOMNavigationTiming.h"
+#include "nsDebug.h"
+#include "nsDeviceContext.h"
+#include "nsDocShell.h"
+#include "nsFocusManager.h"
+#include "nsFrameMessageManager.h"
+#include "nsGkAtoms.h"
+#include "nsGlobalWindowOuter.h"
+#include "nsHashKeys.h"
+#include "nsHistory.h"
+#include "nsIAddonPolicyService.h"
+#include "nsIArray.h"
+#include "nsIBaseWindow.h"
+#include "nsIBrowserChild.h"
+#include "nsICancelableRunnable.h"
+#include "nsIChannel.h"
+#include "nsIContentSecurityPolicy.h"
+#include "nsIControllers.h"
+#include "nsICookieJarSettings.h"
+#include "nsICookieService.h"
+#include "nsID.h"
+#include "nsIDOMStorageManager.h"
+#include "nsIDeviceSensors.h"
+#include "nsIDocShell.h"
+#include "nsIDocShellTreeItem.h"
+#include "nsIDocShellTreeOwner.h"
+#include "nsIDocumentLoader.h"
+#include "nsIDragService.h"
+#include "nsIFocusManager.h"
+#include "nsIFrame.h"
+#include "nsIGlobalObject.h"
+#include "nsIIOService.h"
+#include "nsIIdleRunnable.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsILoadContext.h"
+#include "nsILoadGroup.h"
+#include "nsILoadInfo.h"
+#include "nsINamed.h"
+#include "nsINode.h"
+#include "nsIObserver.h"
+#include "nsIObserverService.h"
+#include "nsIPermission.h"
+#include "nsIPermissionManager.h"
+#include "nsIPrefBranch.h"
+#include "nsIPrincipal.h"
+#include "nsIPrompt.h"
+#include "nsIRunnable.h"
+#include "nsIScreen.h"
+#include "nsIScreenManager.h"
+#include "nsIScriptContext.h"
+#include "nsIScriptGlobalObject.h"
+#include "nsIScriptObjectPrincipal.h"
+#include "nsIScrollableFrame.h"
+#include "nsISerialEventTarget.h"
+#include "nsISimpleEnumerator.h"
+#include "nsISizeOfEventTarget.h"
+#include "nsISlowScriptDebug.h"
+#include "nsISupportsUtils.h"
+#include "nsIThread.h"
+#include "nsITimedChannel.h"
+#include "nsIURI.h"
+#include "nsIWeakReference.h"
+#include "nsIWebBrowserChrome.h"
+#include "nsIWebNavigation.h"
+#include "nsIWebProgressListener.h"
+#include "nsIWidget.h"
+#include "nsIWidgetListener.h"
+#include "nsIXULRuntime.h"
+#include "nsJSPrincipals.h"
+#include "nsJSUtils.h"
+#include "nsLayoutStatics.h"
+#include "nsLiteralString.h"
+#include "nsNetUtil.h"
+#include "nsPIDOMWindow.h"
+#include "nsPIDOMWindowInlines.h"
+#include "nsPIWindowRoot.h"
+#include "nsPoint.h"
+#include "nsPresContext.h"
+#include "nsQueryObject.h"
+#include "nsSandboxFlags.h"
+#include "nsScreen.h"
+#include "nsServiceManagerUtils.h"
+#include "nsString.h"
+#include "nsStringFlags.h"
+#include "nsStringFwd.h"
+#include "nsTArray.h"
+#include "nsTLiteralString.h"
+#include "nsTObserverArray.h"
+#include "nsTStringRepr.h"
+#include "nsThreadUtils.h"
+#include "nsWeakReference.h"
+#include "nsWindowMemoryReporter.h"
+#include "nsWindowSizes.h"
+#include "nsWrapperCache.h"
+#include "nsWrapperCacheInlines.h"
+#include "nsXULAppAPI.h"
+#include "nsrootidl.h"
+#include "prclist.h"
+#include "prtypes.h"
+#include "xpcprivate.h"
+#include "xpcpublic.h"
+
+#include "nsIDOMXULControlElement.h"
+
+#ifdef NS_PRINTING
+#  include "nsIPrintSettings.h"
+#endif
+
+#ifdef MOZ_WEBSPEECH
+#  include "mozilla/dom/SpeechSynthesis.h"
+#endif
+
+#ifdef ANDROID
+#  include <android/log.h>
+#endif
+
+#ifdef XP_WIN
+#  include "mozilla/Debug.h"
+#  include <process.h>
+#  define getpid _getpid
+#else
+#  include <unistd.h>  // for getpid()
+#endif
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::dom::ipc;
+using mozilla::TimeDuration;
+using mozilla::TimeStamp;
+using mozilla::dom::GamepadHandle;
+using mozilla::dom::cache::CacheStorage;
+
+#define FORWARD_TO_OUTER(method, args, err_rval)                     \
+  PR_BEGIN_MACRO                                                     \
+  RefPtr<nsGlobalWindowOuter> outer = GetOuterWindowInternal();      \
+  if (!HasActiveDocument()) {                                        \
+    NS_WARNING(outer ? "Inner window does not have active document." \
+                     : "No outer window available!");                \
+    return err_rval;                                                 \
+  }                                                                  \
+  return outer->method args;                                         \
+  PR_END_MACRO
+
+static nsGlobalWindowOuter* GetOuterWindowForForwarding(
+    nsGlobalWindowInner* aInner, ErrorResult& aError) {
+  nsGlobalWindowOuter* outer = aInner->GetOuterWindowInternal();
+  if (MOZ_LIKELY(aInner->HasActiveDocument())) {
+    return outer;
+  }
+  if (!outer) {
+    NS_WARNING("No outer window available!");
+    aError.Throw(NS_ERROR_NOT_INITIALIZED);
+  } else {
+    aError.Throw(NS_ERROR_XPC_SECURITY_MANAGER_VETO);
+  }
+  return nullptr;
+}
+
+#define FORWARD_TO_OUTER_OR_THROW(method, args, rv, err_rval)                \
+  PR_BEGIN_MACRO                                                             \
+  RefPtr<nsGlobalWindowOuter> outer = GetOuterWindowForForwarding(this, rv); \
+  if (MOZ_LIKELY(outer)) {                                                   \
+    return outer->method args;                                               \
+  }                                                                          \
+  return err_rval;                                                           \
+  PR_END_MACRO
+
+#define FORWARD_TO_OUTER_VOID(method, args)                          \
+  PR_BEGIN_MACRO                                                     \
+  RefPtr<nsGlobalWindowOuter> outer = GetOuterWindowInternal();      \
+  if (!HasActiveDocument()) {                                        \
+    NS_WARNING(outer ? "Inner window does not have active document." \
+                     : "No outer window available!");                \
+    return;                                                          \
+  }                                                                  \
+  outer->method args;                                                \
+  return;                                                            \
+  PR_END_MACRO
+
+#define ENSURE_ACTIVE_DOCUMENT(errorresult, err_rval) \
+  PR_BEGIN_MACRO                                      \
+  if (MOZ_UNLIKELY(!HasActiveDocument())) {           \
+    aError.Throw(NS_ERROR_XPC_SECURITY_MANAGER_VETO); \
+    return err_rval;                                  \
+  }                                                   \
+  PR_END_MACRO
+
+#define DOM_TOUCH_LISTENER_ADDED "dom-touch-listener-added"
+#define MEMORY_PRESSURE_OBSERVER_TOPIC "memory-pressure"
+#define PERMISSION_CHANGED_TOPIC "perm-changed"
+
+static LazyLogModule gDOMLeakPRLogInner("DOMLeakInner");
+extern mozilla::LazyLogModule gTimeoutLog;
+
+#ifdef DEBUG
+static LazyLogModule gDocShellAndDOMWindowLeakLogging(
+    "DocShellAndDOMWindowLeak");
+#endif
+
+static FILE* gDumpFile = nullptr;
+
+nsGlobalWindowInner::InnerWindowByIdTable*
+    nsGlobalWindowInner::sInnerWindowsById = nullptr;
+
+bool nsGlobalWindowInner::sDragServiceDisabled = false;
+bool nsGlobalWindowInner::sMouseDown = false;
+
+/**
+ * An indirect observer object that means we don't have to implement nsIObserver
+ * on nsGlobalWindow, where any script could see it.
+ */
+class nsGlobalWindowObserver final : public nsIObserver,
+                                     public nsIInterfaceRequestor,
+                                     public StorageNotificationObserver {
+ public:
+  explicit nsGlobalWindowObserver(nsGlobalWindowInner* aWindow)
+      : mWindow(aWindow) {}
+  NS_DECL_ISUPPORTS
+  NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
+                     const char16_t* aData) override {
+    if (!mWindow) return NS_OK;
+    return mWindow->Observe(aSubject, aTopic, aData);
+  }
+  void Forget() { mWindow = nullptr; }
+  NS_IMETHOD GetInterface(const nsIID& aIID, void** aResult) override {
+    if (mWindow && aIID.Equals(NS_GET_IID(nsIDOMWindow)) && mWindow) {
+      return mWindow->QueryInterface(aIID, aResult);
+    }
+    return NS_NOINTERFACE;
+  }
+
+  void ObserveStorageNotification(StorageEvent* aEvent,
+                                  const char16_t* aStorageType,
+                                  bool aPrivateBrowsing) override {
+    if (mWindow) {
+      mWindow->ObserveStorageNotification(aEvent, aStorageType,
+                                          aPrivateBrowsing);
+    }
+  }
+
+  nsIPrincipal* GetEffectiveCookiePrincipal() const override {
+    return mWindow ? mWindow->GetEffectiveCookiePrincipal() : nullptr;
+  }
+
+  nsIPrincipal* GetEffectiveStoragePrincipal() const override {
+    return mWindow ? mWindow->GetEffectiveStoragePrincipal() : nullptr;
+  }
+
+  bool IsPrivateBrowsing() const override {
+    return mWindow ? mWindow->IsPrivateBrowsing() : false;
+  }
+
+  nsIEventTarget* GetEventTarget() const override {
+    return mWindow ? mWindow->SerialEventTarget() : nullptr;
+  }
+
+ private:
+  ~nsGlobalWindowObserver() = default;
+
+  // This reference is non-owning and safe because it's cleared by
+  // nsGlobalWindowInner::FreeInnerObjects().
+  nsGlobalWindowInner* MOZ_NON_OWNING_REF mWindow;
+};
+
+NS_IMPL_ISUPPORTS(nsGlobalWindowObserver, nsIObserver, nsIInterfaceRequestor)
+
+class IdleRequestExecutor;
+
+class IdleRequestExecutorTimeoutHandler final : public TimeoutHandler {
+ public:
+  explicit IdleRequestExecutorTimeoutHandler(IdleRequestExecutor* aExecutor)
+      : mExecutor(aExecutor) {}
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(IdleRequestExecutorTimeoutHandler)
+
+  bool Call(const char* /* unused */) override;
+
+ private:
+  ~IdleRequestExecutorTimeoutHandler() override = default;
+  RefPtr<IdleRequestExecutor> mExecutor;
+};
+
+NS_IMPL_CYCLE_COLLECTION(IdleRequestExecutorTimeoutHandler, mExecutor)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleRequestExecutorTimeoutHandler)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleRequestExecutorTimeoutHandler)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutorTimeoutHandler)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+class IdleRequestExecutor final : public nsIRunnable,
+                                  public nsICancelableRunnable,
+                                  public nsINamed,
+                                  public nsIIdleRunnable {
+ public:
+  explicit IdleRequestExecutor(nsGlobalWindowInner* aWindow)
+      : mDispatched(false), mDeadline(TimeStamp::Now()), mWindow(aWindow) {
+    MOZ_DIAGNOSTIC_ASSERT(mWindow);
+
+    mIdlePeriodLimit = {mDeadline, mWindow->LastIdleRequestHandle()};
+    mDelayedExecutorDispatcher = new IdleRequestExecutorTimeoutHandler(this);
+  }
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(IdleRequestExecutor, nsIRunnable)
+
+  NS_DECL_NSIRUNNABLE
+  NS_DECL_NSINAMED
+  nsresult Cancel() override;
+  void SetDeadline(TimeStamp aDeadline) override;
+
+  bool IsCancelled() const { return !mWindow || mWindow->IsDying(); }
+  // Checks if aRequest shouldn't execute in the current idle period
+  // since it has been queued from a chained call to
+  // requestIdleCallback from within a running idle callback.
+  bool IneligibleForCurrentIdlePeriod(IdleRequest* aRequest) const {
+    return aRequest->Handle() >= mIdlePeriodLimit.mLastRequestIdInIdlePeriod &&
+           TimeStamp::Now() <= mIdlePeriodLimit.mEndOfIdlePeriod;
+  }
+
+  void MaybeUpdateIdlePeriodLimit();
+
+  // Maybe dispatch the IdleRequestExecutor. MabyeDispatch will
+  // schedule a delayed dispatch if the associated window is in the
+  // background or if given a time to wait until dispatching.
+  void MaybeDispatch(TimeStamp aDelayUntil = TimeStamp());
+  void ScheduleDispatch();
+
+ private:
+  struct IdlePeriodLimit {
+    TimeStamp mEndOfIdlePeriod;
+    uint32_t mLastRequestIdInIdlePeriod;
+  };
+
+  void DelayedDispatch(uint32_t aDelay);
+
+  ~IdleRequestExecutor() override = default;
+
+  bool mDispatched;
+  TimeStamp mDeadline;
+  IdlePeriodLimit mIdlePeriodLimit;
+  RefPtr<nsGlobalWindowInner> mWindow;
+  // The timeout handler responsible for dispatching this executor in
+  // the case of immediate dispatch to the idle queue isn't
+  // desirable. This is used if we've dispatched all idle callbacks
+  // that are allowed to run in the current idle period, or if the
+  // associated window is currently in the background.
+  RefPtr<TimeoutHandler> mDelayedExecutorDispatcher;
+  // If not Nothing() then this value is the handle to the currently
+  // scheduled delayed executor dispatcher. This is needed to be able
+  // to cancel the timeout handler in case of the executor being
+  // cancelled.
+  Maybe<int32_t> mDelayedExecutorHandle;
+};
+
+NS_IMPL_CYCLE_COLLECTION(IdleRequestExecutor, mWindow,
+                         mDelayedExecutorDispatcher)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleRequestExecutor)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleRequestExecutor)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutor)
+  NS_INTERFACE_MAP_ENTRY(nsIRunnable)
+  NS_INTERFACE_MAP_ENTRY(nsICancelableRunnable)
+  NS_INTERFACE_MAP_ENTRY(nsINamed)
+  NS_INTERFACE_MAP_ENTRY(nsIIdleRunnable)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIRunnable)
+NS_INTERFACE_MAP_END
+
+NS_IMETHODIMP
+IdleRequestExecutor::GetName(nsACString& aName) {
+  aName.AssignLiteral("IdleRequestExecutor");
+  return NS_OK;
+}
+
+// MOZ_CAN_RUN_SCRIPT_BOUNDARY until nsIRunnable::Run is MOZ_CAN_RUN_SCRIPT.
+// See bug 1535398.
+MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP IdleRequestExecutor::Run() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  mDispatched = false;
+  if (mWindow) {
+    RefPtr<nsGlobalWindowInner> window(mWindow);
+    window->ExecuteIdleRequest(mDeadline);
+  }
+
+  return NS_OK;
+}
+
+nsresult IdleRequestExecutor::Cancel() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (mDelayedExecutorHandle && mWindow) {
+    mWindow->TimeoutManager().ClearTimeout(
+        mDelayedExecutorHandle.value(), Timeout::Reason::eIdleCallbackTimeout);
+  }
+
+  mWindow = nullptr;
+  return NS_OK;
+}
+
+void IdleRequestExecutor::SetDeadline(TimeStamp aDeadline) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (!mWindow) {
+    return;
+  }
+
+  mDeadline = aDeadline;
+}
+
+void IdleRequestExecutor::MaybeUpdateIdlePeriodLimit() {
+  if (TimeStamp::Now() > mIdlePeriodLimit.mEndOfIdlePeriod) {
+    mIdlePeriodLimit = {mDeadline, mWindow->LastIdleRequestHandle()};
+  }
+}
+
+void IdleRequestExecutor::MaybeDispatch(TimeStamp aDelayUntil) {
+  // If we've already dispatched the executor we don't want to do it
+  // again. Also, if we've called IdleRequestExecutor::Cancel mWindow
+  // will be null, which indicates that we shouldn't dispatch this
+  // executor either.
+  if (mDispatched || IsCancelled()) {
+    return;
+  }
+
+  mDispatched = true;
+
+  nsPIDOMWindowOuter* outer = mWindow->GetOuterWindow();
+  if (outer && outer->IsBackground()) {
+    // Set a timeout handler with a timeout of 0 ms to throttle idle
+    // callback requests coming from a backround window using
+    // background timeout throttling.
+    DelayedDispatch(0);
+    return;
+  }
+
+  TimeStamp now = TimeStamp::Now();
+  if (!aDelayUntil || aDelayUntil < now) {
+    ScheduleDispatch();
+    return;
+  }
+
+  TimeDuration delay = aDelayUntil - now;
+  DelayedDispatch(static_cast<uint32_t>(delay.ToMilliseconds()));
+}
+
+void IdleRequestExecutor::ScheduleDispatch() {
+  MOZ_ASSERT(mWindow);
+  mDelayedExecutorHandle = Nothing();
+  RefPtr<IdleRequestExecutor> request = this;
+  NS_DispatchToCurrentThreadQueue(request.forget(), EventQueuePriority::Idle);
+}
+
+void IdleRequestExecutor::DelayedDispatch(uint32_t aDelay) {
+  MOZ_ASSERT(mWindow);
+  MOZ_ASSERT(mDelayedExecutorHandle.isNothing());
+  int32_t handle;
+  mWindow->TimeoutManager().SetTimeout(
+      mDelayedExecutorDispatcher, aDelay, false,
+      Timeout::Reason::eIdleCallbackTimeout, &handle);
+  mDelayedExecutorHandle = Some(handle);
+}
+
+bool IdleRequestExecutorTimeoutHandler::Call(const char* /* unused */) {
+  if (!mExecutor->IsCancelled()) {
+    mExecutor->ScheduleDispatch();
+  }
+  return true;
+}
+
+void nsGlobalWindowInner::ScheduleIdleRequestDispatch() {
+  AssertIsOnMainThread();
+
+  if (!mIdleRequestExecutor) {
+    mIdleRequestExecutor = new IdleRequestExecutor(this);
+  }
+
+  mIdleRequestExecutor->MaybeDispatch();
+}
+
+void nsGlobalWindowInner::SuspendIdleRequests() {
+  if (mIdleRequestExecutor) {
+    mIdleRequestExecutor->Cancel();
+    mIdleRequestExecutor = nullptr;
+  }
+}
+
+void nsGlobalWindowInner::ResumeIdleRequests() {
+  MOZ_ASSERT(!mIdleRequestExecutor);
+
+  ScheduleIdleRequestDispatch();
+}
+
+void nsGlobalWindowInner::RemoveIdleCallback(
+    mozilla::dom::IdleRequest* aRequest) {
+  AssertIsOnMainThread();
+
+  if (aRequest->HasTimeout()) {
+    mTimeoutManager->ClearTimeout(aRequest->GetTimeoutHandle(),
+                                  Timeout::Reason::eIdleCallbackTimeout);
+  }
+
+  aRequest->removeFrom(mIdleRequestCallbacks);
+}
+
+void nsGlobalWindowInner::RunIdleRequest(IdleRequest* aRequest,
+                                         DOMHighResTimeStamp aDeadline,
+                                         bool aDidTimeout) {
+  AssertIsOnMainThread();
+  // XXXbz Do we still need this RefPtr?  MOZ_CAN_RUN_SCRIPT should
+  // guarantee that caller is holding a strong ref on the stack.
+  RefPtr<IdleRequest> request(aRequest);
+  RemoveIdleCallback(request);
+  request->IdleRun(this, aDeadline, aDidTimeout);
+}
+
+void nsGlobalWindowInner::ExecuteIdleRequest(TimeStamp aDeadline) {
+  AssertIsOnMainThread();
+  RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst();
+
+  if (!request) {
+    // There are no more idle requests, so stop scheduling idle
+    // request callbacks.
+    return;
+  }
+
+  // If the request that we're trying to execute has been queued
+  // during the current idle period, then dispatch it again at the end
+  // of the idle period.
+  if (mIdleRequestExecutor->IneligibleForCurrentIdlePeriod(request)) {
+    mIdleRequestExecutor->MaybeDispatch(aDeadline);
+    return;
+  }
+
+  DOMHighResTimeStamp deadline = 0.0;
+
+  if (Performance* perf = GetPerformance()) {
+    deadline = perf->GetDOMTiming()->TimeStampToDOMHighRes(aDeadline);
+  }
+
+  mIdleRequestExecutor->MaybeUpdateIdlePeriodLimit();
+  RunIdleRequest(request, deadline, false);
+
+  // Running the idle callback could've suspended the window, in which
+  // case mIdleRequestExecutor will be null.
+  if (mIdleRequestExecutor) {
+    mIdleRequestExecutor->MaybeDispatch();
+  }
+}
+
+class IdleRequestTimeoutHandler final : public TimeoutHandler {
+ public:
+  IdleRequestTimeoutHandler(JSContext* aCx, IdleRequest* aIdleRequest,
+                            nsPIDOMWindowInner* aWindow)
+      : TimeoutHandler(aCx), mIdleRequest(aIdleRequest), mWindow(aWindow) {}
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(IdleRequestTimeoutHandler)
+
+  MOZ_CAN_RUN_SCRIPT bool Call(const char* /* unused */) override {
+    RefPtr<nsGlobalWindowInner> window(nsGlobalWindowInner::Cast(mWindow));
+    RefPtr<IdleRequest> request(mIdleRequest);
+    window->RunIdleRequest(request, 0.0, true);
+    return true;
+  }
+
+ private:
+  ~IdleRequestTimeoutHandler() override = default;
+
+  RefPtr<IdleRequest> mIdleRequest;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
+};
+
+NS_IMPL_CYCLE_COLLECTION(IdleRequestTimeoutHandler, mIdleRequest, mWindow)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleRequestTimeoutHandler)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleRequestTimeoutHandler)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestTimeoutHandler)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+uint32_t nsGlobalWindowInner::RequestIdleCallback(
+    JSContext* aCx, IdleRequestCallback& aCallback,
+    const IdleRequestOptions& aOptions, ErrorResult& aError) {
+  AssertIsOnMainThread();
+
+  if (IsDying()) {
+    return 0;
+  }
+
+  uint32_t handle = mIdleRequestCallbackCounter++;
+
+  RefPtr<IdleRequest> request = new IdleRequest(&aCallback, handle);
+
+  if (aOptions.mTimeout.WasPassed()) {
+    int32_t timeoutHandle;
+    RefPtr<TimeoutHandler> handler(
+        new IdleRequestTimeoutHandler(aCx, request, this));
+
+    nsresult rv = mTimeoutManager->SetTimeout(
+        handler, aOptions.mTimeout.Value(), false,
+        Timeout::Reason::eIdleCallbackTimeout, &timeoutHandle);
+
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return 0;
+    }
+
+    request->SetTimeoutHandle(timeoutHandle);
+  }
+
+  mIdleRequestCallbacks.insertBack(request);
+
+  if (!IsSuspended()) {
+    ScheduleIdleRequestDispatch();
+  }
+
+  return handle;
+}
+
+void nsGlobalWindowInner::CancelIdleCallback(uint32_t aHandle) {
+  for (IdleRequest* r : mIdleRequestCallbacks) {
+    if (r->Handle() == aHandle) {
+      RemoveIdleCallback(r);
+      break;
+    }
+  }
+}
+
+void nsGlobalWindowInner::DisableIdleCallbackRequests() {
+  if (mIdleRequestExecutor) {
+    mIdleRequestExecutor->Cancel();
+    mIdleRequestExecutor = nullptr;
+  }
+
+  while (!mIdleRequestCallbacks.isEmpty()) {
+    RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst();
+    RemoveIdleCallback(request);
+  }
+}
+
+bool nsGlobalWindowInner::IsBackgroundInternal() const {
+  return !mOuterWindow || mOuterWindow->IsBackground();
+}
+
+class PromiseDocumentFlushedResolver final {
+ public:
+  PromiseDocumentFlushedResolver(Promise* aPromise,
+                                 PromiseDocumentFlushedCallback& aCallback)
+      : mPromise(aPromise), mCallback(&aCallback) {}
+
+  virtual ~PromiseDocumentFlushedResolver() = default;
+
+  void Call() {
+    nsMutationGuard guard;
+    ErrorResult error;
+    JS::Rooted<JS::Value> returnVal(RootingCx());
+    mCallback->Call(&returnVal, error);
+
+    if (error.Failed()) {
+      mPromise->MaybeReject(std::move(error));
+    } else if (guard.Mutated(0)) {
+      // Something within the callback mutated the DOM.
+      mPromise->MaybeRejectWithNoModificationAllowedError(
+          "DOM mutated from promiseDocumentFlushed callbacks");
+    } else {
+      mPromise->MaybeResolve(returnVal);
+    }
+  }
+
+  RefPtr<Promise> mPromise;
+  RefPtr<PromiseDocumentFlushedCallback> mCallback;
+};
+
+//*****************************************************************************
+//***    nsGlobalWindowInner: Object Management
+//*****************************************************************************
+
+nsGlobalWindowInner::nsGlobalWindowInner(nsGlobalWindowOuter* aOuterWindow,
+                                         WindowGlobalChild* aActor)
+    : nsPIDOMWindowInner(aOuterWindow, aActor),
+      mHasOrientationChangeListeners(false),
+      mWasOffline(false),
+      mHasHadSlowScript(false),
+      mIsChrome(false),
+      mCleanMessageManager(false),
+      mNeedsFocus(true),
+      mHasFocus(false),
+      mFocusByKeyOccurred(false),
+      mDidFireDocElemInserted(false),
+      mHasGamepad(false),
+      mHasXRSession(false),
+      mHasVRDisplayActivateEvents(false),
+      mXRRuntimeDetectionInFlight(false),
+      mXRPermissionRequestInFlight(false),
+      mXRPermissionGranted(false),
+      mWasCurrentInnerWindow(false),
+      mHasSeenGamepadInput(false),
+      mHintedWasLoading(false),
+      mHasOpenedExternalProtocolFrame(false),
+      mScrollMarksOnHScrollbar(false),
+      mStorageAllowedReasonCache(0),
+      mSuspendDepth(0),
+      mFreezeDepth(0),
+#ifdef DEBUG
+      mSerial(0),
+#endif
+      mFocusMethod(0),
+      mIdleRequestCallbackCounter(1),
+      mIdleRequestExecutor(nullptr),
+      mObservingRefresh(false),
+      mIteratingDocumentFlushedResolvers(false),
+      mCanSkipCCGeneration(0) {
+  mIsInnerWindow = true;
+
+  AssertIsOnMainThread();
+  SetIsOnMainThread();
+  nsLayoutStatics::AddRef();
+
+  // Initialize the PRCList (this).
+  PR_INIT_CLIST(this);
+
+  // add this inner window to the outer window list of inners.
+  PR_INSERT_AFTER(this, aOuterWindow);
+
+  mTimeoutManager = MakeUnique<dom::TimeoutManager>(
+      *this, StaticPrefs::dom_timeout_max_idle_defer_ms());
+
+  mObserver = new nsGlobalWindowObserver(this);
+  if (nsCOMPtr<nsIObserverService> os = services::GetObserverService()) {
+    // Watch for online/offline status changes so we can fire events. Use
+    // a strong reference.
+    os->AddObserver(mObserver, NS_IOSERVICE_OFFLINE_STATUS_TOPIC, false);
+    os->AddObserver(mObserver, MEMORY_PRESSURE_OBSERVER_TOPIC, false);
+    os->AddObserver(mObserver, PERMISSION_CHANGED_TOPIC, false);
+    os->AddObserver(mObserver, "screen-information-changed", false);
+  }
+
+  Preferences::AddStrongObserver(mObserver, "intl.accept_languages");
+
+  // Watch for storage notifications so we can fire storage events.
+  RefPtr<StorageNotifierService> sns = StorageNotifierService::GetOrCreate();
+  if (sns) {
+    sns->Register(mObserver);
+  }
+
+  if (XRE_IsContentProcess()) {
+    nsCOMPtr<nsIDocShell> docShell = GetDocShell();
+    if (docShell) {
+      mBrowserChild = docShell->GetBrowserChild();
+    }
+  }
+
+  if (gDumpFile == nullptr) {
+    nsAutoCString fname;
+    Preferences::GetCString("browser.dom.window.dump.file", fname);
+    if (!fname.IsEmpty()) {
+      // If this fails to open, Dump() knows to just go to stdout on null.
+      gDumpFile = fopen(fname.get(), "wb+");
+    } else {
+      gDumpFile = stdout;
+    }
+  }
+
+#ifdef DEBUG
+  mSerial = nsContentUtils::InnerOrOuterWindowCreated();
+
+  MOZ_LOG(gDocShellAndDOMWindowLeakLogging, LogLevel::Info,
+          ("++DOMWINDOW == %d (%p) [pid = %d] [serial = %d] [outer = %p]\n",
+           nsContentUtils::GetCurrentInnerOrOuterWindowCount(),
+           static_cast<void*>(ToCanonicalSupports(this)), getpid(), mSerial,
+           static_cast<void*>(ToCanonicalSupports(aOuterWindow))));
+#endif
+
+  MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+          ("DOMWINDOW %p created outer=%p", this, aOuterWindow));
+
+  // Add ourselves to the inner windows list.
+  MOZ_ASSERT(sInnerWindowsById, "Inner Windows hash table must be created!");
+  MOZ_ASSERT(!sInnerWindowsById->Contains(mWindowID),
+             "This window shouldn't be in the hash table yet!");
+  // We seem to see crashes in release builds because of null
+  // |sInnerWindowsById|.
+  if (sInnerWindowsById) {
+    sInnerWindowsById->InsertOrUpdate(mWindowID, this);
+  }
+}
+
+#ifdef DEBUG
+
+/* static */
+void nsGlobalWindowInner::AssertIsOnMainThread() {
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+#endif  // DEBUG
+
+/* static */
+void nsGlobalWindowInner::Init() {
+  AssertIsOnMainThread();
+
+  NS_ASSERTION(gDOMLeakPRLogInner,
+               "gDOMLeakPRLogInner should have been initialized!");
+
+  sInnerWindowsById = new InnerWindowByIdTable();
+}
+
+nsGlobalWindowInner::~nsGlobalWindowInner() {
+  AssertIsOnMainThread();
+  MOZ_ASSERT(!mHintedWasLoading);
+
+  if (IsChromeWindow()) {
+    MOZ_ASSERT(mCleanMessageManager,
+               "chrome windows may always disconnect the msg manager");
+
+    DisconnectAndClearGroupMessageManagers();
+
+    if (mChromeFields.mMessageManager) {
+      static_cast<nsFrameMessageManager*>(mChromeFields.mMessageManager.get())
+          ->Disconnect();
+    }
+
+    mCleanMessageManager = false;
+  }
+
+  // In most cases this should already have been called, but call it again
+  // here to catch any corner cases.
+  FreeInnerObjects();
+
+  if (sInnerWindowsById) {
+    sInnerWindowsById->Remove(mWindowID);
+  }
+
+  nsContentUtils::InnerOrOuterWindowDestroyed();
+
+#ifdef DEBUG
+  if (MOZ_LOG_TEST(gDocShellAndDOMWindowLeakLogging, LogLevel::Info)) {
+    nsAutoCString url;
+    if (mLastOpenedURI) {
+      url = mLastOpenedURI->GetSpecOrDefault();
+
+      // Data URLs can be very long, so truncate to avoid flooding the log.
+      const uint32_t maxURLLength = 1000;
+      if (url.Length() > maxURLLength) {
+        url.Truncate(maxURLLength);
+      }
+    }
+
+    nsGlobalWindowOuter* outer = nsGlobalWindowOuter::Cast(mOuterWindow);
+    MOZ_LOG(
+        gDocShellAndDOMWindowLeakLogging, LogLevel::Info,
+        ("--DOMWINDOW == %d (%p) [pid = %d] [serial = %d] [outer = %p] [url = "
+         "%s]\n",
+         nsContentUtils::GetCurrentInnerOrOuterWindowCount(),
+         static_cast<void*>(ToCanonicalSupports(this)), getpid(), mSerial,
+         static_cast<void*>(ToCanonicalSupports(outer)), url.get()));
+  }
+#endif
+  MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+          ("DOMWINDOW %p destroyed", this));
+
+  Telemetry::Accumulate(Telemetry::INNERWINDOWS_WITH_MUTATION_LISTENERS,
+                        mMutationBits ? 1 : 0);
+
+  // An inner window is destroyed, pull it out of the outer window's
+  // list if inner windows.
+
+  PR_REMOVE_LINK(this);
+
+  // If our outer window's inner window is this window, null out the
+  // outer window's reference to this window that's being deleted.
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  if (outer) {
+    outer->MaybeClearInnerWindow(this);
+  }
+
+  // We don't have to leave the tab group if we are an inner window.
+
+  nsCOMPtr<nsIDeviceSensors> ac = do_GetService(NS_DEVICE_SENSORS_CONTRACTID);
+  if (ac) ac->RemoveWindowAsListener(this);
+
+  nsLayoutStatics::Release();
+}
+
+// static
+void nsGlobalWindowInner::ShutDown() {
+  AssertIsOnMainThread();
+
+  if (gDumpFile && gDumpFile != stdout) {
+    fclose(gDumpFile);
+  }
+  gDumpFile = nullptr;
+
+  delete sInnerWindowsById;
+  sInnerWindowsById = nullptr;
+}
+
+void nsGlobalWindowInner::FreeInnerObjects() {
+  if (IsDying()) {
+    return;
+  }
+  StartDying();
+
+  if (mDoc && mDoc->GetWindowContext()) {
+    // The document is about to lose its window, so this is a good time to send
+    // our page use counters.
+    //
+    // (We also do this in Document::SetScriptGlobalObject(nullptr), which
+    // catches most cases of documents losing their window, but not all.)
+    mDoc->SendPageUseCounters();
+  }
+
+  // Make sure that this is called before we null out the document and
+  // other members that the window destroyed observers could
+  // re-create.
+  NotifyDOMWindowDestroyed(this);
+  if (auto* reporter = nsWindowMemoryReporter::Get()) {
+    reporter->ObserveDOMWindowDetached(this);
+  }
+
+  // Kill all of the workers for this window.
+  CancelWorkersForWindow(*this);
+
+  for (RefPtr<mozilla::dom::SharedWorker> pinnedWorker :
+       mSharedWorkers.ForwardRange()) {
+    pinnedWorker->Close();
+  }
+
+  if (mTimeoutManager) {
+    mTimeoutManager->ClearAllTimeouts();
+  }
+
+  DisableIdleCallbackRequests();
+
+  mChromeEventHandler = nullptr;
+
+  if (mListenerManager) {
+    mListenerManager->RemoveAllListeners();
+    mListenerManager->Disconnect();
+    mListenerManager = nullptr;
+  }
+
+  mHistory = nullptr;
+
+  if (mNavigator) {
+    mNavigator->OnNavigation();
+    mNavigator->Invalidate();
+    mNavigator = nullptr;
+  }
+
+  mScreen = nullptr;
+
+  if (mDoc) {
+    // Remember the document's principal, URI, and CSP.
+    mDocumentPrincipal = mDoc->NodePrincipal();
+    mDocumentCookiePrincipal = mDoc->EffectiveCookiePrincipal();
+    mDocumentStoragePrincipal = mDoc->EffectiveStoragePrincipal();
+    mDocumentPartitionedPrincipal = mDoc->PartitionedPrincipal();
+    mDocumentURI = mDoc->GetDocumentURI();
+    mDocBaseURI = mDoc->GetDocBaseURI();
+    mDocumentCsp = mDoc->GetCsp();
+
+    while (mDoc->EventHandlingSuppressed()) {
+      mDoc->UnsuppressEventHandlingAndFireEvents(false);
+    }
+  }
+
+  // Remove our reference to the document and the document principal.
+  mFocusedElement = nullptr;
+
+  nsIGlobalObject::UnlinkObjectsInGlobal();
+
+  NotifyWindowIDDestroyed("inner-window-destroyed");
+
+  for (uint32_t i = 0; i < mAudioContexts.Length(); ++i) {
+    mAudioContexts[i]->OnWindowDestroy();
+  }
+  mAudioContexts.Clear();
+
+  for (MediaKeys* mediaKeys : mMediaKeysInstances) {
+    mediaKeys->OnInnerWindowDestroy();
+  }
+  mMediaKeysInstances.Clear();
+
+  DisableGamepadUpdates();
+  mHasGamepad = false;
+  mGamepads.Clear();
+  DisableVRUpdates();
+  mHasXRSession = false;
+  mHasVRDisplayActivateEvents = false;
+  mXRRuntimeDetectionInFlight = false;
+  mXRPermissionRequestInFlight = false;
+  mXRPermissionGranted = false;
+  mVRDisplays.Clear();
+
+  // This breaks a cycle between the window and the ClientSource object.
+  mClientSource.reset();
+
+  if (mWindowGlobalChild) {
+    // Remove any remaining listeners.
+    int64_t nListeners = mWindowGlobalChild->BeforeUnloadListeners();
+    for (int64_t i = 0; i < nListeners; ++i) {
+      mWindowGlobalChild->BeforeUnloadRemoved();
+    }
+    MOZ_ASSERT(mWindowGlobalChild->BeforeUnloadListeners() == 0);
+  }
+
+  // If we have any promiseDocumentFlushed callbacks, fire them now so
+  // that the Promises can resolve.
+  CallDocumentFlushedResolvers(/* aUntilExhaustion = */ true);
+
+  DisconnectGlobalTeardownObservers();
+
+#ifdef MOZ_WIDGET_ANDROID
+  DisableOrientationChangeListener();
+#endif
+
+  if (mObserver) {
+    if (nsCOMPtr<nsIObserverService> os = services::GetObserverService()) {
+      os->RemoveObserver(mObserver, NS_IOSERVICE_OFFLINE_STATUS_TOPIC);
+      os->RemoveObserver(mObserver, MEMORY_PRESSURE_OBSERVER_TOPIC);
+      os->RemoveObserver(mObserver, PERMISSION_CHANGED_TOPIC);
+      os->RemoveObserver(mObserver, "screen-information-changed");
+    }
+
+    RefPtr<StorageNotifierService> sns = StorageNotifierService::GetOrCreate();
+    if (sns) {
+      sns->Unregister(mObserver);
+    }
+
+    Preferences::RemoveObserver(mObserver, "intl.accept_languages");
+
+    // Drop its reference to this dying window, in case for some bogus reason
+    // the object stays around.
+    mObserver->Forget();
+  }
+
+  mMenubar = nullptr;
+  mToolbar = nullptr;
+  mLocationbar = nullptr;
+  mPersonalbar = nullptr;
+  mStatusbar = nullptr;
+  mScrollbars = nullptr;
+
+  mConsole = nullptr;
+
+  mPaintWorklet = nullptr;
+
+  mExternal = nullptr;
+  mInstallTrigger = nullptr;
+
+  if (mLocalStorage) {
+    mLocalStorage->Disconnect();
+    mLocalStorage = nullptr;
+  }
+  mSessionStorage = nullptr;
+  if (mPerformance) {
+    // Since window is dying, nothing is going to be painted
+    // with meaningful sizes, so these temp data for LCP is
+    // no longer needed.
+    static_cast<PerformanceMainThread*>(mPerformance.get())
+        ->ClearGeneratedTempDataForLCP();
+  }
+  mPerformance = nullptr;
+
+  mContentMediaController = nullptr;
+
+  if (mWebTaskScheduler) {
+    mWebTaskScheduler->Disconnect();
+    mWebTaskScheduler = nullptr;
+  }
+
+  mSharedWorkers.Clear();
+
+#ifdef MOZ_WEBSPEECH
+  mSpeechSynthesis = nullptr;
+#endif
+
+  mGlean = nullptr;
+  mGleanPings = nullptr;
+
+  mParentTarget = nullptr;
+
+  if (mCleanMessageManager) {
+    MOZ_ASSERT(mIsChrome, "only chrome should have msg manager cleaned");
+    if (mChromeFields.mMessageManager) {
+      mChromeFields.mMessageManager->Disconnect();
+    }
+  }
+
+  if (mWindowGlobalChild && !mWindowGlobalChild->IsClosed()) {
+    mWindowGlobalChild->Destroy();
+  }
+
+  mIntlUtils = nullptr;
+
+  HintIsLoading(false);
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsISupports
+//*****************************************************************************
+
+// QueryInterface implementation for nsGlobalWindowInner
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsGlobalWindowInner)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, EventTarget)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMWindow)
+  NS_INTERFACE_MAP_ENTRY(nsIGlobalObject)
+  NS_INTERFACE_MAP_ENTRY(nsIScriptGlobalObject)
+  NS_INTERFACE_MAP_ENTRY(nsIScriptObjectPrincipal)
+  NS_INTERFACE_MAP_ENTRY(mozilla::dom::EventTarget)
+  NS_INTERFACE_MAP_ENTRY(nsPIDOMWindowInner)
+  NS_INTERFACE_MAP_ENTRY(mozIDOMWindow)
+  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+  NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsGlobalWindowInner)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsGlobalWindowInner)
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsGlobalWindowInner)
+  if (tmp->IsBlackForCC(false)) {
+    if (nsCCUncollectableMarker::InGeneration(tmp->mCanSkipCCGeneration)) {
+      return true;
+    }
+    tmp->mCanSkipCCGeneration = nsCCUncollectableMarker::sGeneration;
+    if (EventListenerManager* elm = tmp->GetExistingListenerManager()) {
+      elm->MarkForCC();
+    }
+    if (tmp->mTimeoutManager) {
+      tmp->mTimeoutManager->UnmarkGrayTimers();
+    }
+    return true;
+  }
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsGlobalWindowInner)
+  return tmp->IsBlackForCC(true);
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsGlobalWindowInner)
+  return tmp->IsBlackForCC(false);
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(nsGlobalWindowInner)
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsGlobalWindowInner)
+  if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
+    char name[512];
+    nsAutoCString uri;
+    if (tmp->mDoc && tmp->mDoc->GetDocumentURI()) {
+      uri = tmp->mDoc->GetDocumentURI()->GetSpecOrDefault();
+    }
+    SprintfLiteral(name, "nsGlobalWindowInner # %" PRIu64 " inner %s",
+                   tmp->mWindowID, uri.get());
+    cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name);
+  } else {
+    NS_IMPL_CYCLE_COLLECTION_DESCRIBE(nsGlobalWindowInner, tmp->mRefCnt.get())
+  }
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNavigator)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPerformance)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWebTaskScheduler)
+
+#ifdef MOZ_WEBSPEECH
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSpeechSynthesis)
+#endif
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlean)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGleanPings)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOuterWindow)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTopInnerWindow)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListenerManager)
+
+  if (tmp->mTimeoutManager) {
+    tmp->mTimeoutManager->ForEachUnorderedTimeout([&cb](Timeout* timeout) {
+      cb.NoteNativeChild(timeout, NS_CYCLE_COLLECTION_PARTICIPANT(Timeout));
+    });
+  }
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mHistory)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCustomElements)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSharedWorkers)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocalStorage)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSessionStorage)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIndexedDB)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentPrincipal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentCookiePrincipal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentStoragePrincipal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentPartitionedPrincipal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentCsp)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBrowserChild)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDoc)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIdleRequestExecutor)
+  for (IdleRequest* request : tmp->mIdleRequestCallbacks) {
+    cb.NoteNativeChild(request, NS_CYCLE_COLLECTION_PARTICIPANT(IdleRequest));
+  }
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mClientSource)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGamepads)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCacheStorage)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mVRDisplays)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDebuggerNotificationManager)
+
+  // Traverse stuff from nsPIDOMWindow
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChromeEventHandler)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParentTarget)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFocusedElement)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBrowsingContext)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindowGlobalChild)
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMenubar)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mToolbar)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocationbar)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPersonalbar)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStatusbar)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mScrollbars)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCrypto)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mConsole)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPaintWorklet)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mExternal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInstallTrigger)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIntlUtils)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mVisualViewport)
+
+  tmp->TraverseObjectsInGlobal(cb);
+
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChromeFields.mMessageManager)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChromeFields.mGroupMessageManagers)
+
+  for (size_t i = 0; i < tmp->mDocumentFlushedResolvers.Length(); i++) {
+    NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentFlushedResolvers[i]->mPromise);
+    NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentFlushedResolvers[i]->mCallback);
+  }
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsGlobalWindowInner)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
+  if (sInnerWindowsById) {
+    sInnerWindowsById->Remove(tmp->mWindowID);
+  }
+
+  JSObject* wrapper = tmp->GetWrapperPreserveColor();
+  if (wrapper) {
+    // Mark our realm as dead, so the JS engine won't hand out our
+    // global after this point.
+    JS::SetRealmNonLive(js::GetNonCCWObjectRealm(wrapper));
+  }
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mNavigator)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mPerformance)
+
+  if (tmp->mWebTaskScheduler) {
+    tmp->mWebTaskScheduler->Disconnect();
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mWebTaskScheduler)
+  }
+
+#ifdef MOZ_WEBSPEECH
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mSpeechSynthesis)
+#endif
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlean)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGleanPings)
+
+  if (tmp->mOuterWindow) {
+    nsGlobalWindowOuter::Cast(tmp->mOuterWindow)->MaybeClearInnerWindow(tmp);
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mOuterWindow)
+  }
+
+  if (tmp->mListenerManager) {
+    tmp->mListenerManager->Disconnect();
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mListenerManager)
+  }
+
+  // Here the Timeouts list would've been unlinked, but we rely on
+  // that Timeout objects have been traced and will remove themselves
+  // while unlinking.
+
+  tmp->UpdateTopInnerWindow();
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mTopInnerWindow)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocation)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mHistory)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mCustomElements)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mSharedWorkers)
+  if (tmp->mLocalStorage) {
+    tmp->mLocalStorage->Disconnect();
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocalStorage)
+  }
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mSessionStorage)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mIndexedDB)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentPrincipal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentCookiePrincipal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentStoragePrincipal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentPartitionedPrincipal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentCsp)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mBrowserChild)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDoc)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGamepads)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mCacheStorage)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mVRDisplays)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDebuggerNotificationManager)
+
+  // Unlink stuff from nsPIDOMWindow
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mChromeEventHandler)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mParentTarget)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mFocusedElement)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mBrowsingContext)
+
+  MOZ_DIAGNOSTIC_ASSERT(
+      !tmp->mWindowGlobalChild || tmp->mWindowGlobalChild->IsClosed(),
+      "How are we unlinking a window before its actor has been destroyed?");
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindowGlobalChild)
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mMenubar)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mToolbar)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mLocationbar)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mPersonalbar)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mStatusbar)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mScrollbars)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mCrypto)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mConsole)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mPaintWorklet)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mExternal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mInstallTrigger)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mIntlUtils)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mVisualViewport)
+
+  tmp->UnlinkObjectsInGlobal();
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mIdleRequestExecutor)
+
+  // Here the IdleRequest list would've been unlinked, but we rely on
+  // that IdleRequest objects have been traced and will remove
+  // themselves while unlinking.
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mClientSource)
+
+  if (tmp->IsChromeWindow()) {
+    if (tmp->mChromeFields.mMessageManager) {
+      static_cast<nsFrameMessageManager*>(
+          tmp->mChromeFields.mMessageManager.get())
+          ->Disconnect();
+      NS_IMPL_CYCLE_COLLECTION_UNLINK(mChromeFields.mMessageManager)
+    }
+    tmp->DisconnectAndClearGroupMessageManagers();
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mChromeFields.mGroupMessageManagers)
+  }
+
+  for (size_t i = 0; i < tmp->mDocumentFlushedResolvers.Length(); i++) {
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentFlushedResolvers[i]->mPromise);
+    NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocumentFlushedResolvers[i]->mCallback);
+  }
+  tmp->mDocumentFlushedResolvers.Clear();
+
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+#ifdef DEBUG
+void nsGlobalWindowInner::RiskyUnlink() {
+  NS_CYCLE_COLLECTION_INNERNAME.Unlink(this);
+}
+#endif
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsGlobalWindowInner)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+bool nsGlobalWindowInner::IsBlackForCC(bool aTracingNeeded) {
+  if (!nsCCUncollectableMarker::sGeneration) {
+    return false;
+  }
+
+  return (nsCCUncollectableMarker::InGeneration(GetMarkedCCGeneration()) ||
+          HasKnownLiveWrapper()) &&
+         (!aTracingNeeded || HasNothingToTrace(ToSupports(this)));
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsIScriptGlobalObject
+//*****************************************************************************
+
+bool nsGlobalWindowInner::ShouldResistFingerprinting(RFPTarget aTarget) const {
+  if (mDoc) {
+    return mDoc->ShouldResistFingerprinting(aTarget);
+  }
+  return nsContentUtils::ShouldResistFingerprinting(
+      "If we do not have a document then we do not have any context"
+      "to make an informed RFP choice, so we fall back to the global pref",
+      aTarget);
+}
+
+OriginTrials nsGlobalWindowInner::Trials() const {
+  return OriginTrials::FromWindow(this);
+}
+
+FontFaceSet* nsGlobalWindowInner::GetFonts() {
+  if (mDoc) {
+    return mDoc->Fonts();
+  }
+  return nullptr;
+}
+
+mozilla::Result<mozilla::ipc::PrincipalInfo, nsresult>
+nsGlobalWindowInner::GetStorageKey() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsIPrincipal* principal = GetEffectiveStoragePrincipal();
+  if (!principal) {
+    return mozilla::Err(NS_ERROR_FAILURE);
+  }
+
+  mozilla::ipc::PrincipalInfo principalInfo;
+  nsresult rv = PrincipalToPrincipalInfo(principal, &principalInfo);
+  if (NS_FAILED(rv)) {
+    return mozilla::Err(rv);
+  }
+
+  // Block expanded and null principals, let content and system through.
+  if (principalInfo.type() !=
+          mozilla::ipc::PrincipalInfo::TContentPrincipalInfo &&
+      principalInfo.type() !=
+          mozilla::ipc::PrincipalInfo::TSystemPrincipalInfo) {
+    return Err(NS_ERROR_DOM_SECURITY_ERR);
+  }
+
+  return std::move(principalInfo);
+}
+
+mozilla::dom::StorageManager* nsGlobalWindowInner::GetStorageManager() {
+  return Navigator()->Storage();
+}
+
+// https://html.spec.whatwg.org/multipage/web-messaging.html#eligible-for-messaging
+// * a Window object whose associated Document is fully active
+bool nsGlobalWindowInner::IsEligibleForMessaging() { return IsFullyActive(); }
+
+nsresult nsGlobalWindowInner::EnsureScriptEnvironment() {
+  // NOTE: We can't use FORWARD_TO_OUTER here because we don't want to fail if
+  // we're called on an inactive inner window.
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  if (!outer) {
+    NS_WARNING("No outer window available!");
+    return NS_ERROR_FAILURE;
+  }
+  return outer->EnsureScriptEnvironment();
+}
+
+nsIScriptContext* nsGlobalWindowInner::GetScriptContext() {
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  if (!outer) {
+    return nullptr;
+  }
+  return outer->GetScriptContext();
+}
+
+void nsGlobalWindowInner::TraceGlobalJSObject(JSTracer* aTrc) {
+  TraceWrapper(aTrc, "active window global");
+}
+
+void nsGlobalWindowInner::UpdateAutoplayPermission() {
+  if (!GetWindowContext()) {
+    return;
+  }
+  uint32_t perm =
+      media::AutoplayPolicy::GetSiteAutoplayPermission(GetPrincipal());
+  if (GetWindowContext()->GetAutoplayPermission() == perm) {
+    return;
+  }
+
+  // Setting autoplay permission on a discarded context has no effect.
+  Unused << GetWindowContext()->SetAutoplayPermission(perm);
+}
+
+void nsGlobalWindowInner::UpdateShortcutsPermission() {
+  if (!GetWindowContext() ||
+      !GetWindowContext()->GetBrowsingContext()->IsTop()) {
+    // We only cache the shortcuts permission on top-level WindowContexts
+    // since we always check the top-level principal for the permission.
+    return;
+  }
+
+  uint32_t perm = GetShortcutsPermission(GetPrincipal());
+
+  if (GetWindowContext()->GetShortcutsPermission() == perm) {
+    return;
+  }
+
+  // If the WindowContext is discarded this has no effect.
+  Unused << GetWindowContext()->SetShortcutsPermission(perm);
+}
+
+/* static */
+uint32_t nsGlobalWindowInner::GetShortcutsPermission(nsIPrincipal* aPrincipal) {
+  uint32_t perm = nsIPermissionManager::DENY_ACTION;
+  nsCOMPtr<nsIPermissionManager> permMgr =
+      mozilla::components::PermissionManager::Service();
+  if (aPrincipal && permMgr) {
+    permMgr->TestExactPermissionFromPrincipal(aPrincipal, "shortcuts"_ns,
+                                              &perm);
+  }
+  return perm;
+}
+
+void nsGlobalWindowInner::UpdatePopupPermission() {
+  if (!GetWindowContext()) {
+    return;
+  }
+
+  uint32_t perm = PopupBlocker::GetPopupPermission(GetPrincipal());
+  if (GetWindowContext()->GetPopupPermission() == perm) {
+    return;
+  }
+
+  // If the WindowContext is discarded this has no effect.
+  Unused << GetWindowContext()->SetPopupPermission(perm);
+}
+
+void nsGlobalWindowInner::UpdatePermissions() {
+  if (!GetWindowContext()) {
+    return;
+  }
+
+  nsCOMPtr<nsIPrincipal> principal = GetPrincipal();
+  RefPtr<WindowContext> windowContext = GetWindowContext();
+
+  WindowContext::Transaction txn;
+  txn.SetAutoplayPermission(
+      media::AutoplayPolicy::GetSiteAutoplayPermission(principal));
+  txn.SetPopupPermission(PopupBlocker::GetPopupPermission(principal));
+
+  if (windowContext->IsTop()) {
+    txn.SetShortcutsPermission(GetShortcutsPermission(principal));
+  }
+
+  // Setting permissions on a discarded WindowContext has no effect
+  Unused << txn.Commit(windowContext);
+}
+
+void nsGlobalWindowInner::InitDocumentDependentState(JSContext* aCx) {
+  MOZ_ASSERT(mDoc);
+
+  if (MOZ_LOG_TEST(gDOMLeakPRLogInner, LogLevel::Debug)) {
+    nsIURI* uri = mDoc->GetDocumentURI();
+    MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+            ("DOMWINDOW %p SetNewDocument %s", this,
+             uri ? uri->GetSpecOrDefault().get() : ""));
+  }
+
+  mFocusedElement = nullptr;
+  mLocalStorage = nullptr;
+  mSessionStorage = nullptr;
+  mPerformance = nullptr;
+  if (mWebTaskScheduler) {
+    mWebTaskScheduler->Disconnect();
+    mWebTaskScheduler = nullptr;
+  }
+
+  // This must be called after nullifying the internal objects because here we
+  // could recreate them, calling the getter methods, and store them into the JS
+  // slots. If we nullify them after, the slot values and the objects will be
+  // out of sync.
+  ClearDocumentDependentSlots(aCx);
+
+  if (!mWindowGlobalChild) {
+    mWindowGlobalChild = WindowGlobalChild::Create(this);
+  }
+  MOZ_ASSERT(!GetWindowContext()->HasBeenUserGestureActivated(),
+             "WindowContext should always not have user gesture activation at "
+             "this point.");
+
+  UpdatePermissions();
+
+  RefPtr<PermissionDelegateHandler> permDelegateHandler =
+      mDoc->GetPermissionDelegateHandler();
+
+  if (permDelegateHandler) {
+    permDelegateHandler->PopulateAllDelegatedPermissions();
+  }
+
+#if defined(MOZ_WIDGET_ANDROID)
+  // When we insert the new document to the window in the top-level browsing
+  // context, we should reset the status of the request which is used for the
+  // previous document.
+  if (mWindowGlobalChild && GetBrowsingContext() &&
+      !GetBrowsingContext()->GetParent()) {
+    // Return value of setting synced field should be checked. See bug 1656492.
+    Unused << GetBrowsingContext()->ResetGVAutoplayRequestStatus();
+  }
+#endif
+
+#ifdef DEBUG
+  mLastOpenedURI = mDoc->GetDocumentURI();
+#endif
+
+  Telemetry::Accumulate(Telemetry::INNERWINDOWS_WITH_MUTATION_LISTENERS,
+                        mMutationBits ? 1 : 0);
+
+  // Clear our mutation bitfield.
+  mMutationBits = 0;
+}
+
+nsresult nsGlobalWindowInner::EnsureClientSource() {
+  MOZ_DIAGNOSTIC_ASSERT(mDoc);
+
+  bool newClientSource = false;
+
+  // Get the load info for the document if we performed a load.  Be careful not
+  // to look at local URLs, though. Local URLs are those that have a scheme of:
+  //  * about:
+  //  * data:
+  //  * blob:
+  // We also do an additional check here so that we only treat about:blank
+  // and about:srcdoc as local URLs.  Other internal firefox about: URLs should
+  // not be treated this way.
+  nsCOMPtr<nsILoadInfo> loadInfo;
+  nsCOMPtr<nsIChannel> channel = mDoc->GetChannel();
+  if (channel) {
+    nsCOMPtr<nsIURI> uri;
+    Unused << channel->GetURI(getter_AddRefs(uri));
+
+    bool ignoreLoadInfo = false;
+
+    // Note, this is mostly copied from NS_IsAboutBlank().  Its duplicated
+    // here so we can efficiently check about:srcdoc as well.
+    if (uri->SchemeIs("about")) {
+      nsCString spec = uri->GetSpecOrDefault();
+      ignoreLoadInfo = spec.EqualsLiteral("about:blank") ||
+                       spec.EqualsLiteral("about:srcdoc");
+    } else {
+      // Its not an about: URL, so now check for our other URL types.
+      ignoreLoadInfo = uri->SchemeIs("data") || uri->SchemeIs("blob");
+    }
+
+    if (!ignoreLoadInfo) {
+      loadInfo = channel->LoadInfo();
+    }
+  }
+
+  // Take the initial client source from the docshell immediately.  Even if we
+  // don't end up using it here we should consume it.
+  UniquePtr<ClientSource> initialClientSource;
+  nsIDocShell* docshell = GetDocShell();
+  if (docshell) {
+    initialClientSource = docshell->TakeInitialClientSource();
+  }
+
+  // Try to get the reserved client from the LoadInfo.  A Client is
+  // reserved at the start of the channel load if there is not an
+  // initial about:blank document that will be reused.  It is also
+  // created if the channel load encounters a cross-origin redirect.
+  if (loadInfo) {
+    UniquePtr<ClientSource> reservedClient =
+        loadInfo->TakeReservedClientSource();
+    if (reservedClient) {
+      mClientSource.reset();
+      mClientSource = std::move(reservedClient);
+      newClientSource = true;
+    }
+  }
+
+  // We don't have a LoadInfo reserved client, but maybe we should
+  // be inheriting an initial one from the docshell.  This means
+  // that the docshell started the channel load before creating the
+  // initial about:blank document.  This is an optimization, though,
+  // and it created an initial Client as a placeholder for the document.
+  // In this case we want to inherit this placeholder Client here.
+  if (!mClientSource) {
+    mClientSource = std::move(initialClientSource);
+    if (mClientSource) {
+      newClientSource = true;
+    }
+  }
+
+  nsCOMPtr<nsIPrincipal> foreignPartitionedPrincipal;
+
+  nsresult rv = StoragePrincipalHelper::GetPrincipal(
+      this,
+      StaticPrefs::privacy_partition_serviceWorkers()
+          ? StoragePrincipalHelper::eForeignPartitionedPrincipal
+          : StoragePrincipalHelper::eRegularPrincipal,
+      getter_AddRefs(foreignPartitionedPrincipal));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Verify the final ClientSource principal matches the final document
+  // principal.  The ClientChannelHelper handles things like network
+  // redirects, but there are other ways the document principal can change.
+  // For example, if something sets the nsIChannel.owner property, then
+  // the final channel principal can be anything.  Unfortunately there is
+  // no good way to detect this until after the channel completes loading.
+  //
+  // For now we handle this just by reseting the ClientSource.  This will
+  // result in a new ClientSource with the correct principal being created.
+  // To APIs like ServiceWorker and Clients API it will look like there was
+  // an initial content page created that was then immediately replaced.
+  // This is pretty close to what we are actually doing.
+  if (mClientSource) {
+    auto principalOrErr = mClientSource->Info().GetPrincipal();
+    nsCOMPtr<nsIPrincipal> clientPrincipal =
+        principalOrErr.isOk() ? principalOrErr.unwrap() : nullptr;
+    if (!clientPrincipal ||
+        !clientPrincipal->Equals(foreignPartitionedPrincipal)) {
+      mClientSource.reset();
+    }
+  }
+
+  // If we don't have a reserved client or an initial client, then create
+  // one now.  This can happen in certain cases where we avoid preallocating
+  // the client in the docshell.  This mainly occurs in situations where
+  // the principal is not clearly inherited from the parent; e.g. sandboxed
+  // iframes, window.open(), etc.
+  //
+  // We also do this late ClientSource creation if the final document ended
+  // up with a different principal.
+  //
+  // TODO: We may not be marking initial about:blank documents created
+  //       this way as controlled by a service worker properly.  The
+  //       controller should be coming from the same place as the inheritted
+  //       principal.  We do this in docshell, but as mentioned we aren't
+  //       smart enough to handle all cases yet.  For example, a
+  //       window.open() with new URL should inherit the controller from
+  //       the opener, but we probably don't handle that yet.
+  if (!mClientSource) {
+    mClientSource = ClientManager::CreateSource(
+        ClientType::Window, SerialEventTarget(), foreignPartitionedPrincipal);
+    MOZ_DIAGNOSTIC_ASSERT(mClientSource);
+    newClientSource = true;
+
+    // Note, we don't apply the loadinfo controller below if we create
+    // the ClientSource here.
+  }
+
+  // The load may have started controlling the Client as well.  If
+  // so, mark it as controlled immediately here.  The actor may
+  // or may not have been notified by the parent side about being
+  // controlled yet.
+  //
+  // Note: We should be careful not to control a client that was created late.
+  //       These clients were not seen by the ServiceWorkerManager when it
+  //       marked the LoadInfo controlled and it won't know about them.  Its
+  //       also possible we are creating the client late due to the final
+  //       principal changing and these clients should definitely not be
+  //       controlled by a service worker with a different principal.
+  else if (loadInfo) {
+    const Maybe<ServiceWorkerDescriptor> controller = loadInfo->GetController();
+    if (controller.isSome()) {
+      mClientSource->SetController(controller.ref());
+    }
+
+    // We also have to handle the case where te initial about:blank is
+    // controlled due to inheritting the service worker from its parent,
+    // but the actual nsIChannel load is not covered by any service worker.
+    // In this case we want the final page to be uncontrolled.  There is
+    // an open spec issue about how exactly this should be handled, but for
+    // now we just force creation of a new ClientSource to clear the
+    // controller.
+    //
+    //  https://github.com/w3c/ServiceWorker/issues/1232
+    //
+    else if (mClientSource->GetController().isSome()) {
+      mClientSource.reset();
+      mClientSource = ClientManager::CreateSource(
+          ClientType::Window, SerialEventTarget(), foreignPartitionedPrincipal);
+      MOZ_DIAGNOSTIC_ASSERT(mClientSource);
+      newClientSource = true;
+    }
+  }
+
+  if (mClientSource) {
+    // Generally the CSP is stored within the Client and cached on the document.
+    // At the time of CSP parsing however, the Client has not been created yet,
+    // hence we store the CSP on the document and propagate/sync the CSP with
+    // Client here when we create the Client.
+    mClientSource->SetCsp(mDoc->GetCsp());
+
+    DocGroup* docGroup = GetDocGroup();
+    MOZ_DIAGNOSTIC_ASSERT(docGroup);
+    mClientSource->SetAgentClusterId(docGroup->AgentClusterId());
+
+    if (mWindowGlobalChild) {
+      mWindowGlobalChild->SendSetClientInfo(mClientSource->Info().ToIPC());
+    }
+  }
+
+  // Its possible that we got a client just after being frozen in
+  // the bfcache.  In that case freeze the client immediately.
+  if (newClientSource && IsFrozen()) {
+    mClientSource->Freeze();
+  }
+
+  return NS_OK;
+}
+
+nsresult nsGlobalWindowInner::ExecutionReady() {
+  nsresult rv = EnsureClientSource();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = mClientSource->WindowExecutionReady(this);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+void nsGlobalWindowInner::UpdateParentTarget() {
+  // NOTE: This method is identical to
+  // nsGlobalWindowOuter::UpdateParentTarget(). IF YOU UPDATE THIS METHOD,
+  // UPDATE THE OTHER ONE TOO!
+
+  // Try to get our frame element's tab child global (its in-process message
+  // manager).  If that fails, fall back to the chrome event handler's tab
+  // child global, and if it doesn't have one, just use the chrome event
+  // handler itself.
+
+  nsPIDOMWindowOuter* outer = GetOuterWindow();
+  if (!outer) {
+    return;
+  }
+  nsCOMPtr<Element> frameElement = outer->GetFrameElementInternal();
+  nsCOMPtr<EventTarget> eventTarget =
+      nsContentUtils::TryGetBrowserChildGlobal(frameElement);
+
+  if (!eventTarget) {
+    nsGlobalWindowOuter* topWin = GetInProcessScriptableTopInternal();
+    if (topWin) {
+      frameElement = topWin->GetFrameElementInternal();
+      eventTarget = nsContentUtils::TryGetBrowserChildGlobal(frameElement);
+    }
+  }
+
+  if (!eventTarget) {
+    eventTarget = nsContentUtils::TryGetBrowserChildGlobal(mChromeEventHandler);
+  }
+
+  if (!eventTarget) {
+    eventTarget = mChromeEventHandler;
+  }
+
+  mParentTarget = eventTarget;
+}
+
+EventTarget* nsGlobalWindowInner::GetTargetForDOMEvent() {
+  return GetOuterWindowInternal();
+}
+
+void nsGlobalWindowInner::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
+  EventMessage msg = aVisitor.mEvent->mMessage;
+
+  aVisitor.mCanHandle = true;
+  aVisitor.mForceContentDispatch = true;  // FIXME! Bug 329119
+  if (msg == eResize && aVisitor.mEvent->IsTrusted()) {
+    // Checking whether the event target is an inner window or not, so we can
+    // keep the old behavior also in case a child window is handling resize.
+    if (aVisitor.mEvent->mOriginalTarget &&
+        aVisitor.mEvent->mOriginalTarget->IsInnerWindow()) {
+      mIsHandlingResizeEvent = true;
+    }
+  } else if (msg == eMouseDown && aVisitor.mEvent->IsTrusted()) {
+    sMouseDown = true;
+  } else if ((msg == eMouseUp || msg == eDragEnd) &&
+             aVisitor.mEvent->IsTrusted()) {
+    sMouseDown = false;
+    if (sDragServiceDisabled) {
+      nsCOMPtr<nsIDragService> ds =
+          do_GetService("@mozilla.org/widget/dragservice;1");
+      if (ds) {
+        sDragServiceDisabled = false;
+        ds->Unsuppress();
+      }
+    }
+  }
+
+  aVisitor.SetParentTarget(GetParentTarget(), true);
+}
+
+void nsGlobalWindowInner::FireFrameLoadEvent() {
+  // If we're not in a content frame, or are at a BrowsingContext tree boundary,
+  // such as the content-chrome boundary, don't fire the "load" event.
+  if (GetBrowsingContext()->IsTopContent() ||
+      GetBrowsingContext()->IsChrome()) {
+    return;
+  }
+
+  // If embedder is same-process, fire the event on our embedder element.
+  //
+  // XXX: Bug 1440212 is looking into potentially changing this behaviour to act
+  // more like the remote case when in-process.
+  RefPtr<Element> element = GetBrowsingContext()->GetEmbedderElement();
+  if (element) {
+    nsEventStatus status = nsEventStatus_eIgnore;
+    WidgetEvent event(/* aIsTrusted = */ true, eLoad);
+    event.mFlags.mBubbles = false;
+    event.mFlags.mCancelable = false;
+
+    // Most of the time we could get a pres context to pass in here, but not
+    // always (i.e. if this window is not shown there won't be a pres context
+    // available). Since we're not firing a GUI event we don't need a pres
+    // context anyway so we just pass null as the pres context all the time.
+    EventDispatcher::Dispatch(element, nullptr, &event, nullptr, &status);
+    return;
+  }
+
+  // We don't have an in-process embedder. Try to get our `BrowserChild` actor
+  // to send a message to that embedder. We want to double-check that our outer
+  // window is actually the one at the root of this browserChild though, just in
+  // case.
+  RefPtr<BrowserChild> browserChild =
+      BrowserChild::GetFrom(static_cast<nsPIDOMWindowInner*>(this));
+  if (browserChild &&
+      !GetBrowsingContext()->GetParentWindowContext()->IsInProcess()) {
+    // Double-check that our outer window is actually at the root of this
+    // `BrowserChild`, in case we're in an odd maybe-unhosted situation like a
+    // print preview dialog.
+    nsCOMPtr<nsPIDOMWindowOuter> rootOuter =
+        do_GetInterface(browserChild->WebNavigation());
+    if (!rootOuter || rootOuter != GetOuterWindow()) {
+      return;
+    }
+
+    mozilla::Unused << browserChild->SendMaybeFireEmbedderLoadEvents(
+        EmbedderElementEventType::LoadEvent);
+  }
+}
+
+nsresult nsGlobalWindowInner::PostHandleEvent(EventChainPostVisitor& aVisitor) {
+  // Return early if there is nothing to do.
+  switch (aVisitor.mEvent->mMessage) {
+    case eResize:
+    case eUnload:
+    case eLoad:
+      break;
+    default:
+      return NS_OK;
+  }
+
+  /* mChromeEventHandler and mContext go dangling in the middle of this
+   function under some circumstances (events that destroy the window)
+   without this addref. */
+  RefPtr<EventTarget> kungFuDeathGrip1(mChromeEventHandler);
+  mozilla::Unused
+      << kungFuDeathGrip1;  // These aren't referred to through the function
+  nsCOMPtr<nsIScriptContext> kungFuDeathGrip2(GetContextInternal());
+  mozilla::Unused
+      << kungFuDeathGrip2;  // These aren't referred to through the function
+
+  if (aVisitor.mEvent->mMessage == eResize) {
+    mIsHandlingResizeEvent = false;
+  } else if (aVisitor.mEvent->mMessage == eUnload &&
+             aVisitor.mEvent->IsTrusted()) {
+    // If any VR display presentation is active at unload, the next page
+    // will receive a vrdisplayactive event to indicate that it should
+    // immediately begin vr presentation. This should occur when navigating
+    // forwards, navigating backwards, and on page reload.
+    for (const auto& display : mVRDisplays) {
+      if (display->IsPresenting()) {
+        display->StartVRNavigation();
+        // Save this VR display ID to trigger vrdisplayactivate event
+        // after the next load event.
+        nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+        if (outer) {
+          outer->SetAutoActivateVRDisplayID(display->DisplayId());
+        }
+
+        // XXX The WebVR 1.1 spec does not define which of multiple VR
+        // presenting VR displays will be chosen during navigation.
+        // As the underlying platform VR API's currently only allow a single
+        // VR display, it is safe to choose the first VR display for now.
+        break;
+      }
+    }
+    mIsDocumentLoaded = false;
+    // Tell the parent process that the document is not loaded.
+    if (mWindowGlobalChild) {
+      mWindowGlobalChild->SendUpdateDocumentHasLoaded(mIsDocumentLoaded);
+    }
+  } else if (aVisitor.mEvent->mMessage == eLoad &&
+             aVisitor.mEvent->IsTrusted()) {
+    // This is page load event since load events don't propagate to |window|.
+    // @see Document::GetEventTargetParent.
+    mIsDocumentLoaded = true;
+    // Tell the parent process that the document is loaded.
+    if (mWindowGlobalChild) {
+      mWindowGlobalChild->SendUpdateDocumentHasLoaded(mIsDocumentLoaded);
+    }
+
+    mTimeoutManager->OnDocumentLoaded();
+
+    MOZ_ASSERT(aVisitor.mEvent->IsTrusted());
+    FireFrameLoadEvent();
+
+    if (mVREventObserver) {
+      mVREventObserver->NotifyAfterLoad();
+    }
+
+    uint32_t autoActivateVRDisplayID = 0;
+    nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+    if (outer) {
+      autoActivateVRDisplayID = outer->GetAutoActivateVRDisplayID();
+    }
+    if (autoActivateVRDisplayID) {
+      DispatchVRDisplayActivate(autoActivateVRDisplayID,
+                                VRDisplayEventReason::Navigation);
+    }
+  }
+
+  return NS_OK;
+}
+
+nsresult nsGlobalWindowInner::DefineArgumentsProperty(nsIArray* aArguments) {
+  nsIScriptContext* ctx = GetOuterWindowInternal()->mContext;
+  NS_ENSURE_TRUE(aArguments && ctx, NS_ERROR_NOT_INITIALIZED);
+
+  JS::Rooted<JSObject*> obj(RootingCx(), GetWrapperPreserveColor());
+  return ctx->SetProperty(obj, "arguments", aArguments);
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsIScriptObjectPrincipal
+//*****************************************************************************
+
+nsIPrincipal* nsGlobalWindowInner::GetPrincipal() {
+  if (mDoc) {
+    // If we have a document, get the principal from the document
+    return mDoc->NodePrincipal();
+  }
+
+  if (mDocumentPrincipal) {
+    return mDocumentPrincipal;
+  }
+
+  // If we don't have a principal and we don't have a document we
+  // ask the parent window for the principal. This can happen when
+  // loading a frameset that has a <frame src="javascript:xxx">, in
+  // that case the global window is used in JS before we've loaded
+  // a document into the window.
+
+  nsCOMPtr<nsIScriptObjectPrincipal> objPrincipal =
+      do_QueryInterface(GetInProcessParentInternal());
+
+  if (objPrincipal) {
+    return objPrincipal->GetPrincipal();
+  }
+
+  return nullptr;
+}
+
+nsIPrincipal* nsGlobalWindowInner::GetEffectiveCookiePrincipal() {
+  if (mDoc) {
+    // If we have a document, get the principal from the document
+    return mDoc->EffectiveCookiePrincipal();
+  }
+
+  if (mDocumentCookiePrincipal) {
+    return mDocumentCookiePrincipal;
+  }
+
+  // If we don't have a cookie principal and we don't have a document we ask
+  // the parent window for the cookie principal.
+
+  nsCOMPtr<nsIScriptObjectPrincipal> objPrincipal =
+      do_QueryInterface(GetInProcessParentInternal());
+
+  if (objPrincipal) {
+    return objPrincipal->GetEffectiveCookiePrincipal();
+  }
+
+  return nullptr;
+}
+
+nsIPrincipal* nsGlobalWindowInner::GetEffectiveStoragePrincipal() {
+  if (mDoc) {
+    // If we have a document, get the principal from the document
+    return mDoc->EffectiveStoragePrincipal();
+  }
+
+  if (mDocumentStoragePrincipal) {
+    return mDocumentStoragePrincipal;
+  }
+
+  // If we don't have a cookie principal and we don't have a document we ask
+  // the parent window for the cookie principal.
+
+  nsCOMPtr<nsIScriptObjectPrincipal> objPrincipal =
+      do_QueryInterface(GetInProcessParentInternal());
+
+  if (objPrincipal) {
+    return objPrincipal->GetEffectiveStoragePrincipal();
+  }
+
+  return nullptr;
+}
+
+nsIPrincipal* nsGlobalWindowInner::PartitionedPrincipal() {
+  if (mDoc) {
+    // If we have a document, get the principal from the document
+    return mDoc->PartitionedPrincipal();
+  }
+
+  if (mDocumentPartitionedPrincipal) {
+    return mDocumentPartitionedPrincipal;
+  }
+
+  // If we don't have a partitioned principal and we don't have a document we
+  // ask the parent window for the partitioned principal.
+
+  nsCOMPtr<nsIScriptObjectPrincipal> objPrincipal =
+      do_QueryInterface(GetInProcessParentInternal());
+
+  if (objPrincipal) {
+    return objPrincipal->PartitionedPrincipal();
+  }
+
+  return nullptr;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsIDOMWindow
+//*****************************************************************************
+
+bool nsPIDOMWindowInner::AddAudioContext(AudioContext* aAudioContext) {
+  mAudioContexts.AppendElement(aAudioContext);
+
+  // Return true if the context should be muted and false if not.
+  nsIDocShell* docShell = GetDocShell();
+  return docShell && !docShell->GetAllowMedia() && !aAudioContext->IsOffline();
+}
+
+void nsPIDOMWindowInner::RemoveAudioContext(AudioContext* aAudioContext) {
+  mAudioContexts.RemoveElement(aAudioContext);
+}
+
+void nsPIDOMWindowInner::MuteAudioContexts() {
+  for (uint32_t i = 0; i < mAudioContexts.Length(); ++i) {
+    if (!mAudioContexts[i]->IsOffline()) {
+      mAudioContexts[i]->Mute();
+    }
+  }
+}
+
+void nsPIDOMWindowInner::UnmuteAudioContexts() {
+  for (uint32_t i = 0; i < mAudioContexts.Length(); ++i) {
+    if (!mAudioContexts[i]->IsOffline()) {
+      mAudioContexts[i]->Unmute();
+    }
+  }
+}
+
+WindowProxyHolder nsGlobalWindowInner::Window() {
+  return WindowProxyHolder(GetBrowsingContext());
+}
+
+Navigator* nsPIDOMWindowInner::Navigator() {
+  if (!mNavigator) {
+    mNavigator = new mozilla::dom::Navigator(this);
+  }
+
+  return mNavigator;
+}
+
+MediaDevices* nsPIDOMWindowInner::GetExtantMediaDevices() const {
+  return mNavigator ? mNavigator->GetExtantMediaDevices() : nullptr;
+}
+
+VisualViewport* nsGlobalWindowInner::VisualViewport() {
+  if (!mVisualViewport) {
+    mVisualViewport = new mozilla::dom::VisualViewport(this);
+  }
+  return mVisualViewport;
+}
+
+nsScreen* nsGlobalWindowInner::Screen() {
+  if (!mScreen) {
+    mScreen = new nsScreen(this);
+  }
+  return mScreen;
+}
+
+nsHistory* nsGlobalWindowInner::GetHistory(ErrorResult& aError) {
+  if (!mHistory) {
+    mHistory = new nsHistory(this);
+  }
+  return mHistory;
+}
+
+CustomElementRegistry* nsGlobalWindowInner::CustomElements() {
+  if (!mCustomElements) {
+    mCustomElements = new CustomElementRegistry(this);
+  }
+
+  return mCustomElements;
+}
+
+CustomElementRegistry* nsGlobalWindowInner::GetExistingCustomElements() {
+  return mCustomElements;
+}
+
+Performance* nsPIDOMWindowInner::GetPerformance() {
+  CreatePerformanceObjectIfNeeded();
+  return mPerformance;
+}
+
+void nsPIDOMWindowInner::QueuePerformanceNavigationTiming() {
+  CreatePerformanceObjectIfNeeded();
+  if (mPerformance) {
+    mPerformance->QueueNavigationTimingEntry();
+  }
+}
+
+void nsPIDOMWindowInner::CreatePerformanceObjectIfNeeded() {
+  if (mPerformance || !mDoc) {
+    return;
+  }
+  RefPtr<nsDOMNavigationTiming> timing = mDoc->GetNavigationTiming();
+  nsCOMPtr<nsITimedChannel> timedChannel(do_QueryInterface(mDoc->GetChannel()));
+  bool timingEnabled = false;
+  if (!timedChannel ||
+      !NS_SUCCEEDED(timedChannel->GetTimingEnabled(&timingEnabled)) ||
+      !timingEnabled) {
+    timedChannel = nullptr;
+  }
+  if (timing) {
+    mPerformance = Performance::CreateForMainThread(this, mDoc->NodePrincipal(),
+                                                    timing, timedChannel);
+  }
+}
+
+bool nsPIDOMWindowInner::IsSecureContext() const {
+  return nsGlobalWindowInner::Cast(this)->IsSecureContext();
+}
+
+void nsPIDOMWindowInner::Suspend(bool aIncludeSubWindows) {
+  nsGlobalWindowInner::Cast(this)->Suspend(aIncludeSubWindows);
+}
+
+void nsPIDOMWindowInner::Resume(bool aIncludeSubWindows) {
+  nsGlobalWindowInner::Cast(this)->Resume(aIncludeSubWindows);
+}
+
+void nsPIDOMWindowInner::SyncStateFromParentWindow() {
+  nsGlobalWindowInner::Cast(this)->SyncStateFromParentWindow();
+}
+
+Maybe<ClientInfo> nsPIDOMWindowInner::GetClientInfo() const {
+  return nsGlobalWindowInner::Cast(this)->GetClientInfo();
+}
+
+Maybe<ClientState> nsPIDOMWindowInner::GetClientState() const {
+  return nsGlobalWindowInner::Cast(this)->GetClientState();
+}
+
+Maybe<ServiceWorkerDescriptor> nsPIDOMWindowInner::GetController() const {
+  return nsGlobalWindowInner::Cast(this)->GetController();
+}
+
+void nsPIDOMWindowInner::SetCsp(nsIContentSecurityPolicy* aCsp) {
+  return nsGlobalWindowInner::Cast(this)->SetCsp(aCsp);
+}
+
+void nsPIDOMWindowInner::SetPreloadCsp(nsIContentSecurityPolicy* aPreloadCsp) {
+  return nsGlobalWindowInner::Cast(this)->SetPreloadCsp(aPreloadCsp);
+}
+
+nsIContentSecurityPolicy* nsPIDOMWindowInner::GetCsp() {
+  return nsGlobalWindowInner::Cast(this)->GetCsp();
+}
+
+void nsPIDOMWindowInner::NoteCalledRegisterForServiceWorkerScope(
+    const nsACString& aScope) {
+  nsGlobalWindowInner::Cast(this)->NoteCalledRegisterForServiceWorkerScope(
+      aScope);
+}
+
+void nsPIDOMWindowInner::NoteDOMContentLoaded() {
+  nsGlobalWindowInner::Cast(this)->NoteDOMContentLoaded();
+}
+
+bool nsGlobalWindowInner::ShouldReportForServiceWorkerScope(
+    const nsAString& aScope) {
+  bool result = false;
+
+  nsPIDOMWindowOuter* topOuter = GetInProcessScriptableTop();
+  NS_ENSURE_TRUE(topOuter, false);
+
+  nsGlobalWindowInner* topInner =
+      nsGlobalWindowInner::Cast(topOuter->GetCurrentInnerWindow());
+  NS_ENSURE_TRUE(topInner, false);
+
+  topInner->ShouldReportForServiceWorkerScopeInternal(
+      NS_ConvertUTF16toUTF8(aScope), &result);
+  return result;
+}
+
+InstallTriggerImpl* nsGlobalWindowInner::GetInstallTrigger() {
+  if (!mInstallTrigger &&
+      !StaticPrefs::extensions_InstallTriggerImpl_enabled()) {
+    // Return nullptr when InstallTriggerImpl is disabled by pref,
+    // which does not yet break the "typeof InstallTrigger !== 'undefined"
+    // "UA detection" use case, but prevents access to the InstallTriggerImpl
+    // methods and properties.
+    //
+    // NOTE: a separate pref ("extensions.InstallTrigger.enabled"), associated
+    // to this property using the [Pref] extended attribute in Window.webidl,
+    // does instead hide the entire InstallTrigger property.
+    //
+    // See Bug 1754441 for more details about this deprecation.
+    return nullptr;
+  }
+  if (!mInstallTrigger) {
+    ErrorResult rv;
+    mInstallTrigger = ConstructJSImplementation<InstallTriggerImpl>(
+        "@mozilla.org/addons/installtrigger;1", this, rv);
+    if (rv.Failed()) {
+      rv.SuppressException();
+      return nullptr;
+    }
+  }
+
+  return mInstallTrigger;
+}
+
+nsIDOMWindowUtils* nsGlobalWindowInner::GetWindowUtils(ErrorResult& aRv) {
+  FORWARD_TO_OUTER_OR_THROW(WindowUtils, (), aRv, nullptr);
+}
+
+CallState nsGlobalWindowInner::ShouldReportForServiceWorkerScopeInternal(
+    const nsACString& aScope, bool* aResultOut) {
+  MOZ_DIAGNOSTIC_ASSERT(aResultOut);
+
+  // First check to see if this window is controlled.  If so, then we have
+  // found a match and are done.
+  const Maybe<ServiceWorkerDescriptor> swd = GetController();
+  if (swd.isSome() && swd.ref().Scope() == aScope) {
+    *aResultOut = true;
+    return CallState::Stop;
+  }
+
+  // Next, check to see if this window has called
+  // navigator.serviceWorker.register() for this scope.  If so, then treat this
+  // as a match so console reports appear in the devtools console.
+  if (mClientSource &&
+      mClientSource->CalledRegisterForServiceWorkerScope(aScope)) {
+    *aResultOut = true;
+    return CallState::Stop;
+  }
+
+  // Finally check the current docshell nsILoadGroup to see if there are any
+  // outstanding navigation requests.  If so, match the scope against the
+  // channel's URL.  We want to show console reports during the FetchEvent
+  // intercepting the navigation itself.
+  nsCOMPtr<nsIDocumentLoader> loader(do_QueryInterface(GetDocShell()));
+  if (loader) {
+    nsCOMPtr<nsILoadGroup> loadgroup;
+    Unused << loader->GetLoadGroup(getter_AddRefs(loadgroup));
+    if (loadgroup) {
+      nsCOMPtr<nsISimpleEnumerator> iter;
+      Unused << loadgroup->GetRequests(getter_AddRefs(iter));
+      if (iter) {
+        nsCOMPtr<nsISupports> tmp;
+        bool hasMore = true;
+        // Check each network request in the load group.
+        while (NS_SUCCEEDED(iter->HasMoreElements(&hasMore)) && hasMore) {
+          iter->GetNext(getter_AddRefs(tmp));
+          nsCOMPtr<nsIChannel> loadingChannel(do_QueryInterface(tmp));
+          // Ignore subresource requests.  Logging for a subresource
+          // FetchEvent should be handled above since the client is
+          // already controlled.
+          if (!loadingChannel ||
+              !nsContentUtils::IsNonSubresourceRequest(loadingChannel)) {
+            continue;
+          }
+          nsCOMPtr<nsIURI> loadingURL;
+          Unused << loadingChannel->GetURI(getter_AddRefs(loadingURL));
+          if (!loadingURL) {
+            continue;
+          }
+          nsAutoCString loadingSpec;
+          Unused << loadingURL->GetSpec(loadingSpec);
+          // Perform a simple substring comparison to match the scope
+          // against the channel URL.
+          if (StringBeginsWith(loadingSpec, aScope)) {
+            *aResultOut = true;
+            return CallState::Stop;
+          }
+        }
+      }
+    }
+  }
+
+  // The current window doesn't care about this service worker, but maybe
+  // one of our child frames does.
+  return CallOnInProcessChildren(
+      &nsGlobalWindowInner::ShouldReportForServiceWorkerScopeInternal, aScope,
+      aResultOut);
+}
+
+void nsGlobalWindowInner::NoteCalledRegisterForServiceWorkerScope(
+    const nsACString& aScope) {
+  if (!mClientSource) {
+    return;
+  }
+
+  mClientSource->NoteCalledRegisterForServiceWorkerScope(aScope);
+}
+
+void nsGlobalWindowInner::NoteDOMContentLoaded() {
+  if (!mClientSource) {
+    return;
+  }
+
+  mClientSource->NoteDOMContentLoaded();
+}
+
+void nsGlobalWindowInner::UpdateTopInnerWindow() {
+  if (IsTopInnerWindow() || !mTopInnerWindow) {
+    return;
+  }
+
+  mTopInnerWindow->UpdateWebSocketCount(-(int32_t)mNumOfOpenWebSockets);
+}
+
+bool nsGlobalWindowInner::IsInSyncOperation() {
+  return GetExtantDoc() && GetExtantDoc()->IsInSyncOperation();
+}
+
+bool nsGlobalWindowInner::IsSharedMemoryAllowedInternal(
+    nsIPrincipal* aPrincipal) const {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (StaticPrefs::
+          dom_postMessage_sharedArrayBuffer_bypassCOOP_COEP_insecure_enabled()) {
+    return true;
+  }
+
+  if (ExtensionPolicyService::GetSingleton().IsExtensionProcess()) {
+    if (auto* basePrincipal = BasePrincipal::Cast(aPrincipal)) {
+      if (auto* policy = basePrincipal->AddonPolicy()) {
+        return policy->IsPrivileged();
+      }
+    }
+  }
+
+  return CrossOriginIsolated();
+}
+
+bool nsGlobalWindowInner::CrossOriginIsolated() const {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  RefPtr<BrowsingContext> bc = GetBrowsingContext();
+  MOZ_DIAGNOSTIC_ASSERT(bc);
+  return bc->CrossOriginIsolated();
+}
+
+WindowContext* TopWindowContext(nsPIDOMWindowInner& aWindow) {
+  WindowContext* wc = aWindow.GetWindowContext();
+  if (!wc) {
+    return nullptr;
+  }
+
+  return wc->TopWindowContext();
+}
+
+void nsPIDOMWindowInner::AddPeerConnection() {
+  MOZ_ASSERT(NS_IsMainThread());
+  ++mActivePeerConnections;
+  if (mActivePeerConnections == 1 && mWindowGlobalChild) {
+    mWindowGlobalChild->SendUpdateActivePeerConnectionStatus(
+        /*aIsAdded*/ true);
+
+    // We need to present having active peer connections immediately. If we need
+    // to wait for the parent process to come back with this information we
+    // might start throttling.
+    if (WindowContext* top = TopWindowContext(*this)) {
+      top->TransientSetHasActivePeerConnections();
+    }
+  }
+}
+
+void nsPIDOMWindowInner::RemovePeerConnection() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mActivePeerConnections > 0);
+  --mActivePeerConnections;
+  if (mActivePeerConnections == 0 && mWindowGlobalChild) {
+    mWindowGlobalChild->SendUpdateActivePeerConnectionStatus(
+        /*aIsAdded*/ false);
+  }
+}
+
+bool nsPIDOMWindowInner::HasActivePeerConnections() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  WindowContext* topWindowContext = TopWindowContext(*this);
+  return topWindowContext && topWindowContext->GetHasActivePeerConnections();
+}
+
+void nsPIDOMWindowInner::AddMediaKeysInstance(MediaKeys* aMediaKeys) {
+  MOZ_ASSERT(NS_IsMainThread());
+  mMediaKeysInstances.AppendElement(aMediaKeys);
+  if (mWindowGlobalChild && mMediaKeysInstances.Length() == 1) {
+    mWindowGlobalChild->BlockBFCacheFor(BFCacheStatus::CONTAINS_EME_CONTENT);
+  }
+}
+
+void nsPIDOMWindowInner::RemoveMediaKeysInstance(MediaKeys* aMediaKeys) {
+  MOZ_ASSERT(NS_IsMainThread());
+  mMediaKeysInstances.RemoveElement(aMediaKeys);
+  if (mWindowGlobalChild && mMediaKeysInstances.IsEmpty()) {
+    mWindowGlobalChild->UnblockBFCacheFor(BFCacheStatus::CONTAINS_EME_CONTENT);
+  }
+}
+
+bool nsPIDOMWindowInner::HasActiveMediaKeysInstance() {
+  MOZ_ASSERT(NS_IsMainThread());
+  return !mMediaKeysInstances.IsEmpty();
+}
+
+bool nsPIDOMWindowInner::IsPlayingAudio() {
+  for (uint32_t i = 0; i < mAudioContexts.Length(); i++) {
+    if (mAudioContexts[i]->IsRunning()) {
+      return true;
+    }
+  }
+  RefPtr<AudioChannelService> acs = AudioChannelService::Get();
+  if (!acs) {
+    return false;
+  }
+  auto outer = GetOuterWindow();
+  if (!outer) {
+    // We've been unlinked and are about to die.  Not a good time to pretend to
+    // be playing audio.
+    return false;
+  }
+  return acs->IsWindowActive(outer);
+}
+
+bool nsPIDOMWindowInner::IsDocumentLoaded() const { return mIsDocumentLoaded; }
+
+mozilla::dom::TimeoutManager& nsPIDOMWindowInner::TimeoutManager() {
+  return *mTimeoutManager;
+}
+
+bool nsPIDOMWindowInner::IsRunningTimeout() {
+  return TimeoutManager().IsRunningTimeout();
+}
+
+void nsPIDOMWindowInner::TryToCacheTopInnerWindow() {
+  if (mHasTriedToCacheTopInnerWindow) {
+    return;
+  }
+
+  nsGlobalWindowInner* window = nsGlobalWindowInner::Cast(this);
+
+  MOZ_ASSERT(!window->IsDying());
+
+  mHasTriedToCacheTopInnerWindow = true;
+
+  MOZ_ASSERT(window);
+
+  if (nsCOMPtr<nsPIDOMWindowOuter> topOutter =
+          window->GetInProcessScriptableTop()) {
+    mTopInnerWindow = topOutter->GetCurrentInnerWindow();
+  }
+}
+
+void nsPIDOMWindowInner::UpdateActiveIndexedDBDatabaseCount(int32_t aDelta) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (aDelta == 0) {
+    return;
+  }
+
+  // We count databases but not transactions because only active databases
+  // could block throttling.
+  uint32_t& counter = mTopInnerWindow
+                          ? mTopInnerWindow->mNumOfIndexedDBDatabases
+                          : mNumOfIndexedDBDatabases;
+
+  counter += aDelta;
+}
+
+bool nsPIDOMWindowInner::HasActiveIndexedDBDatabases() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  return mTopInnerWindow ? mTopInnerWindow->mNumOfIndexedDBDatabases > 0
+                         : mNumOfIndexedDBDatabases > 0;
+}
+
+void nsPIDOMWindowInner::UpdateWebSocketCount(int32_t aDelta) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (aDelta == 0) {
+    return;
+  }
+
+  if (mTopInnerWindow && !IsTopInnerWindow()) {
+    mTopInnerWindow->UpdateWebSocketCount(aDelta);
+  }
+
+  MOZ_DIAGNOSTIC_ASSERT(
+      aDelta > 0 || ((aDelta + mNumOfOpenWebSockets) < mNumOfOpenWebSockets));
+
+  mNumOfOpenWebSockets += aDelta;
+}
+
+bool nsPIDOMWindowInner::HasOpenWebSockets() const {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  return mNumOfOpenWebSockets ||
+         (mTopInnerWindow && mTopInnerWindow->mNumOfOpenWebSockets);
+}
+
+bool nsPIDOMWindowInner::IsCurrentInnerWindow() const {
+  if (mozilla::SessionHistoryInParent() && mBrowsingContext &&
+      mBrowsingContext->IsInBFCache()) {
+    return false;
+  }
+
+  if (!mBrowsingContext || mBrowsingContext->IsDiscarded()) {
+    // If our BrowsingContext has been discarded, we consider ourselves
+    // still-current if we were current at the time it was discarded.
+    return mOuterWindow && WasCurrentInnerWindow();
+  }
+
+  nsPIDOMWindowOuter* outer = mBrowsingContext->GetDOMWindow();
+  return outer && outer->GetCurrentInnerWindow() == this;
+}
+
+bool nsPIDOMWindowInner::IsFullyActive() const {
+  WindowContext* wc = GetWindowContext();
+  if (!wc || wc->IsDiscarded() || !wc->IsCurrent()) {
+    return false;
+  }
+  return GetBrowsingContext()->AncestorsAreCurrent();
+}
+
+void nsPIDOMWindowInner::SetAudioCapture(bool aCapture) {
+  RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
+  if (service) {
+    service->SetWindowAudioCaptured(GetOuterWindow(), mWindowID, aCapture);
+  }
+}
+
+void nsGlobalWindowInner::SetActiveLoadingState(bool aIsLoading) {
+  MOZ_LOG(
+      gTimeoutLog, mozilla::LogLevel::Debug,
+      ("SetActiveLoadingState innerwindow %p: %d", (void*)this, aIsLoading));
+  if (GetBrowsingContext()) {
+    // Setting loading on a discarded context has no effect.
+    Unused << GetBrowsingContext()->SetLoading(aIsLoading);
+  }
+
+  if (!nsGlobalWindowInner::Cast(this)->IsChromeWindow()) {
+    mTimeoutManager->SetLoading(aIsLoading);
+  }
+
+  HintIsLoading(aIsLoading);
+}
+
+void nsGlobalWindowInner::HintIsLoading(bool aIsLoading) {
+  // Hint to tell the JS GC to use modified triggers during pageload.
+  if (mHintedWasLoading != aIsLoading) {
+    using namespace js::gc;
+    SetPerformanceHint(danger::GetJSContext(), aIsLoading
+                                                   ? PerformanceHint::InPageLoad
+                                                   : PerformanceHint::Normal);
+    mHintedWasLoading = aIsLoading;
+  }
+}
+
+// nsISpeechSynthesisGetter
+
+#ifdef MOZ_WEBSPEECH
+SpeechSynthesis* nsGlobalWindowInner::GetSpeechSynthesis(ErrorResult& aError) {
+  if (!mSpeechSynthesis) {
+    mSpeechSynthesis = new SpeechSynthesis(this);
+  }
+
+  return mSpeechSynthesis;
+}
+
+bool nsGlobalWindowInner::HasActiveSpeechSynthesis() {
+  if (mSpeechSynthesis) {
+    return !mSpeechSynthesis->HasEmptyQueue();
+  }
+
+  return false;
+}
+
+#endif
+
+mozilla::glean::Glean* nsGlobalWindowInner::Glean() {
+  if (!mGlean) {
+    mGlean = new mozilla::glean::Glean(this);
+  }
+
+  return mGlean;
+}
+
+mozilla::glean::GleanPings* nsGlobalWindowInner::GleanPings() {
+  if (!mGleanPings) {
+    mGleanPings = new mozilla::glean::GleanPings();
+  }
+
+  return mGleanPings;
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::GetParent(
+    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetParentOuter, (), aError, nullptr);
+}
+
+/**
+ * GetInProcessScriptableParent used to be called when a script read
+ * window.parent. Under Fission, that is now handled by
+ * BrowsingContext::GetParent, and the result is a WindowProxyHolder rather than
+ * an actual global window. This method still exists for legacy callers which
+ * relied on the old logic, and require in-process windows. However, it only
+ * works correctly when no out-of-process frames exist between this window and
+ * the top-level window, so it should not be used in new code.
+ *
+ * In contrast to GetRealParent, GetInProcessScriptableParent respects <iframe
+ * mozbrowser> boundaries, so if |this| is contained by an <iframe
+ * mozbrowser>, we will return |this| as its own parent.
+ */
+nsPIDOMWindowOuter* nsGlobalWindowInner::GetInProcessScriptableParent() {
+  FORWARD_TO_OUTER(GetInProcessScriptableParent, (), nullptr);
+}
+
+/**
+ * GetInProcessScriptableTop used to be called when a script read window.top.
+ * Under Fission, that is now handled by BrowsingContext::Top, and the result is
+ * a WindowProxyHolder rather than an actual global window. This method still
+ * exists for legacy callers which relied on the old logic, and require
+ * in-process windows. However, it only works correctly when no out-of-process
+ * frames exist between this window and the top-level window, so it should not
+ * be used in new code.
+ *
+ * In contrast to GetRealTop, GetInProcessScriptableTop respects <iframe
+ * mozbrowser> boundaries.  If we encounter a window owned by an <iframe
+ * mozbrowser> while walking up the window hierarchy, we'll stop and return that
+ * window.
+ */
+nsPIDOMWindowOuter* nsGlobalWindowInner::GetInProcessScriptableTop() {
+  FORWARD_TO_OUTER(GetInProcessScriptableTop, (), nullptr);
+}
+
+void nsGlobalWindowInner::GetContent(JSContext* aCx,
+                                     JS::MutableHandle<JSObject*> aRetval,
+                                     CallerType aCallerType,
+                                     ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetContentOuter,
+                            (aCx, aRetval, aCallerType, aError), aError, );
+}
+
+BarProp* nsGlobalWindowInner::GetMenubar(ErrorResult& aError) {
+  if (!mMenubar) {
+    mMenubar = new MenubarProp(this);
+  }
+
+  return mMenubar;
+}
+
+BarProp* nsGlobalWindowInner::GetToolbar(ErrorResult& aError) {
+  if (!mToolbar) {
+    mToolbar = new ToolbarProp(this);
+  }
+
+  return mToolbar;
+}
+
+BarProp* nsGlobalWindowInner::GetLocationbar(ErrorResult& aError) {
+  if (!mLocationbar) {
+    mLocationbar = new LocationbarProp(this);
+  }
+  return mLocationbar;
+}
+
+BarProp* nsGlobalWindowInner::GetPersonalbar(ErrorResult& aError) {
+  if (!mPersonalbar) {
+    mPersonalbar = new PersonalbarProp(this);
+  }
+  return mPersonalbar;
+}
+
+BarProp* nsGlobalWindowInner::GetStatusbar(ErrorResult& aError) {
+  if (!mStatusbar) {
+    mStatusbar = new StatusbarProp(this);
+  }
+  return mStatusbar;
+}
+
+BarProp* nsGlobalWindowInner::GetScrollbars(ErrorResult& aError) {
+  if (!mScrollbars) {
+    mScrollbars = new ScrollbarsProp(this);
+  }
+
+  return mScrollbars;
+}
+
+bool nsGlobalWindowInner::GetClosed(ErrorResult& aError) {
+  // If we're called from JS (which is the only way we should be getting called
+  // here) and we reach this point, that means our JS global is the current
+  // target of the WindowProxy, which means that we are the "current inner"
+  // of our outer. So if FORWARD_TO_OUTER fails to forward, that means the
+  // outer is already torn down, which corresponds to the closed state.
+  FORWARD_TO_OUTER(GetClosedOuter, (), true);
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::IndexedGetter(
+    uint32_t aIndex) {
+  FORWARD_TO_OUTER(IndexedGetterOuter, (aIndex), nullptr);
+}
+
+namespace {
+
+struct InterfaceShimEntry {
+  const char* geckoName;
+  const char* domName;
+};
+
+}  // anonymous namespace
+
+// We add shims from Components.interfaces.nsIDOMFoo to window.Foo for each
+// interface that has interface constants that sites might be getting off
+// of Ci.
+const InterfaceShimEntry kInterfaceShimMap[] = {
+    {"nsIXMLHttpRequest", "XMLHttpRequest"},
+    {"nsIDOMDOMException", "DOMException"},
+    {"nsIDOMNode", "Node"},
+    {"nsIDOMCSSRule", "CSSRule"},
+    {"nsIDOMEvent", "Event"},
+    {"nsIDOMNSEvent", "Event"},
+    {"nsIDOMKeyEvent", "KeyEvent"},
+    {"nsIDOMMouseEvent", "MouseEvent"},
+    {"nsIDOMMouseScrollEvent", "MouseScrollEvent"},
+    {"nsIDOMMutationEvent", "MutationEvent"},
+    {"nsIDOMUIEvent", "UIEvent"},
+    {"nsIDOMHTMLMediaElement", "HTMLMediaElement"},
+    {"nsIDOMRange", "Range"},
+    // Think about whether Ci.nsINodeFilter can just go away for websites!
+    {"nsIDOMNodeFilter", "NodeFilter"},
+    {"nsIDOMXPathResult", "XPathResult"}};
+
+bool nsGlobalWindowInner::ResolveComponentsShim(
+    JSContext* aCx, JS::Handle<JSObject*> aGlobal,
+    JS::MutableHandle<mozilla::Maybe<JS::PropertyDescriptor>> aDesc) {
+  // Keep track of how often this happens.
+  Telemetry::Accumulate(Telemetry::COMPONENTS_SHIM_ACCESSED_BY_CONTENT, true);
+
+  // Warn once.
+  nsCOMPtr<Document> doc = GetExtantDoc();
+  if (doc) {
+    doc->WarnOnceAbout(DeprecatedOperations::eComponents, /* asError = */ true);
+  }
+
+  // Create a fake Components object.
+  AssertSameCompartment(aCx, aGlobal);
+  JS::Rooted<JSObject*> components(aCx, JS_NewPlainObject(aCx));
+  if (NS_WARN_IF(!components)) {
+    return false;
+  }
+
+  // Create a fake interfaces object.
+  JS::Rooted<JSObject*> interfaces(aCx, JS_NewPlainObject(aCx));
+  if (NS_WARN_IF(!interfaces)) {
+    return false;
+  }
+  bool ok =
+      JS_DefineProperty(aCx, components, "interfaces", interfaces,
+                        JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
+  if (NS_WARN_IF(!ok)) {
+    return false;
+  }
+
+  // Define a bunch of shims from the Ci.nsIDOMFoo to window.Foo for DOM
+  // interfaces with constants.
+  for (uint32_t i = 0; i < ArrayLength(kInterfaceShimMap); ++i) {
+    // Grab the names from the table.
+    const char* geckoName = kInterfaceShimMap[i].geckoName;
+    const char* domName = kInterfaceShimMap[i].domName;
+
+    // Look up the appopriate interface object on the global.
+    JS::Rooted<JS::Value> v(aCx, JS::UndefinedValue());
+    ok = JS_GetProperty(aCx, aGlobal, domName, &v);
+    if (NS_WARN_IF(!ok)) {
+      return false;
+    }
+    if (!v.isObject()) {
+      NS_WARNING("Unable to find interface object on global");
+      continue;
+    }
+
+    // Define the shim on the interfaces object.
+    ok = JS_DefineProperty(
+        aCx, interfaces, geckoName, v,
+        JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
+    if (NS_WARN_IF(!ok)) {
+      return false;
+    }
+  }
+
+  aDesc.set(mozilla::Some(JS::PropertyDescriptor::Data(
+      JS::ObjectValue(*components),
+      {JS::PropertyAttribute::Configurable, JS::PropertyAttribute::Enumerable,
+       JS::PropertyAttribute::Writable})));
+  return true;
+}
+
+#ifdef RELEASE_OR_BETA
+#  define USE_CONTROLLERS_SHIM
+#endif
+
+#ifdef USE_CONTROLLERS_SHIM
+static const JSClass ControllersShimClass = {"Controllers", 0};
+static const JSClass XULControllersShimClass = {"XULControllers", 0};
+#endif
+
+bool nsGlobalWindowInner::DoResolve(
+    JSContext* aCx, JS::Handle<JSObject*> aObj, JS::Handle<jsid> aId,
+    JS::MutableHandle<mozilla::Maybe<JS::PropertyDescriptor>> aDesc) {
+  // Note: Keep this in sync with MayResolve.
+
+  // Note: The infallibleInit call in GlobalResolve depends on this check.
+  if (!aId.isString()) {
+    return true;
+  }
+
+  bool found;
+  if (!WebIDLGlobalNameHash::DefineIfEnabled(aCx, aObj, aId, aDesc, &found)) {
+    return false;
+  }
+
+  if (found) {
+    return true;
+  }
+
+  // We support a cut-down Components.interfaces in case websites are
+  // using Components.interfaces.nsIFoo.CONSTANT_NAME for the ones
+  // that have constants.
+  if (StaticPrefs::dom_use_components_shim() &&
+      aId == XPCJSRuntime::Get()->GetStringID(XPCJSContext::IDX_COMPONENTS)) {
+    return ResolveComponentsShim(aCx, aObj, aDesc);
+  }
+
+  // We also support a "window.controllers" thing; apparently some
+  // sites use it for browser-sniffing.  See bug 1010577.
+#ifdef USE_CONTROLLERS_SHIM
+  // Note: We use |aObj| rather than |this| to get the principal here, because
+  // this is called during Window setup when the Document isn't necessarily
+  // hooked up yet.
+  if ((aId == XPCJSRuntime::Get()->GetStringID(XPCJSContext::IDX_CONTROLLERS) ||
+       aId == XPCJSRuntime::Get()->GetStringID(
+                  XPCJSContext::IDX_CONTROLLERS_CLASS)) &&
+      !xpc::IsXrayWrapper(aObj) &&
+      !nsContentUtils::ObjectPrincipal(aObj)->IsSystemPrincipal()) {
+    if (GetExtantDoc()) {
+      GetExtantDoc()->WarnOnceAbout(
+          DeprecatedOperations::eWindow_Cc_ontrollers);
+    }
+    const JSClass* clazz;
+    if (aId ==
+        XPCJSRuntime::Get()->GetStringID(XPCJSContext::IDX_CONTROLLERS)) {
+      clazz = &XULControllersShimClass;
+    } else {
+      clazz = &ControllersShimClass;
+    }
+    MOZ_ASSERT(JS_IsGlobalObject(aObj));
+    JS::Rooted<JSObject*> shim(aCx, JS_NewObject(aCx, clazz));
+    if (NS_WARN_IF(!shim)) {
+      return false;
+    }
+
+    aDesc.set(mozilla::Some(JS::PropertyDescriptor::Data(
+        JS::ObjectValue(*shim),
+        {JS::PropertyAttribute::Configurable, JS::PropertyAttribute::Enumerable,
+         JS::PropertyAttribute::Writable})));
+    return true;
+  }
+#endif
+
+  return true;
+}
+
+/* static */
+bool nsGlobalWindowInner::MayResolve(jsid aId) {
+  // Note: This function does not fail and may not have any side-effects.
+  // Note: Keep this in sync with DoResolve.
+  if (!aId.isString()) {
+    return false;
+  }
+
+  if (aId == XPCJSRuntime::Get()->GetStringID(XPCJSContext::IDX_COMPONENTS)) {
+    return true;
+  }
+
+  if (aId == XPCJSRuntime::Get()->GetStringID(XPCJSContext::IDX_CONTROLLERS) ||
+      aId == XPCJSRuntime::Get()->GetStringID(
+                 XPCJSContext::IDX_CONTROLLERS_CLASS)) {
+    // We only resolve .controllers/.Controllers in release builds and on
+    // non-chrome windows, but let's not worry about any of that stuff.
+    return true;
+  }
+
+  return WebIDLGlobalNameHash::MayResolve(aId);
+}
+
+void nsGlobalWindowInner::GetOwnPropertyNames(
+    JSContext* aCx, JS::MutableHandleVector<jsid> aNames, bool aEnumerableOnly,
+    ErrorResult& aRv) {
+  if (aEnumerableOnly) {
+    // The names we would return from here get defined on the window via one of
+    // two codepaths.  The ones coming from the WebIDLGlobalNameHash will end up
+    // in the DefineConstructor function in BindingUtils, which always defines
+    // things as non-enumerable.  The ones coming from the script namespace
+    // manager get defined by our resolve hook using FillPropertyDescriptor with
+    // 0 for the property attributes, so non-enumerable as well.
+    //
+    // So in the aEnumerableOnly case we have nothing to do.
+    return;
+  }
+
+  // "Components" is marked as enumerable but only resolved on demand :-/.
+  // aNames.AppendElement(u"Components"_ns);
+
+  JS::Rooted<JSObject*> wrapper(aCx, GetWrapper());
+
+  // There are actually two ways we can get called here: For normal
+  // enumeration or for Xray enumeration.  In the latter case, we want to
+  // return all possible WebIDL names, because we don't really support
+  // deleting these names off our Xray; trying to resolve them will just make
+  // them come back.  In the former case, we want to avoid returning deleted
+  // names.  But the JS engine already knows about the non-deleted
+  // already-resolved names, so we can just return the so-far-unresolved ones.
+  //
+  // We can tell which case we're in by whether aCx is in our wrapper's
+  // compartment.  If not, we're in the Xray case.
+  WebIDLGlobalNameHash::NameType nameType =
+      js::IsObjectInContextCompartment(wrapper, aCx)
+          ? WebIDLGlobalNameHash::UnresolvedNamesOnly
+          : WebIDLGlobalNameHash::AllNames;
+  if (!WebIDLGlobalNameHash::GetNames(aCx, wrapper, nameType, aNames)) {
+    aRv.NoteJSContextException(aCx);
+  }
+}
+
+/* static */
+bool nsGlobalWindowInner::IsPrivilegedChromeWindow(JSContext*, JSObject* aObj) {
+  // For now, have to deal with XPConnect objects here.
+  nsGlobalWindowInner* win = xpc::WindowOrNull(aObj);
+  return win && win->IsChromeWindow() &&
+         nsContentUtils::ObjectPrincipal(aObj) ==
+             nsContentUtils::GetSystemPrincipal();
+}
+
+/* static */
+bool nsGlobalWindowInner::DeviceSensorsEnabled(JSContext*, JSObject*) {
+  return Preferences::GetBool("device.sensors.enabled");
+}
+
+/* static */
+bool nsGlobalWindowInner::CachesEnabled(JSContext* aCx, JSObject* aObj) {
+  if (!IsSecureContextOrObjectIsFromSecureContext(aCx, aObj)) {
+    return StaticPrefs::dom_caches_testing_enabled() ||
+           StaticPrefs::dom_serviceWorkers_testing_enabled();
+  }
+  return true;
+}
+
+/* static */
+bool nsGlobalWindowInner::IsSizeToContentEnabled(JSContext* aCx, JSObject*) {
+  return StaticPrefs::dom_window_sizeToContent_enabled() ||
+         nsContentUtils::IsSystemCaller(aCx);
+}
+
+/* static */
+bool nsGlobalWindowInner::IsGleanNeeded(JSContext* aCx, JSObject* aObj) {
+  // Glean is needed in ChromeOnly contexts and also in privileged about pages.
+  nsIPrincipal* principal = nsContentUtils::SubjectPrincipal(aCx);
+  if (principal->IsSystemPrincipal()) {
+    return true;
+  }
+
+  uint32_t flags = 0;
+  if (NS_FAILED(principal->GetAboutModuleFlags(&flags))) {
+    return false;
+  }
+  return flags & nsIAboutModule::IS_SECURE_CHROME_UI;
+}
+
+Crypto* nsGlobalWindowInner::GetCrypto(ErrorResult& aError) {
+  if (!mCrypto) {
+    mCrypto = new Crypto(this);
+  }
+  return mCrypto;
+}
+
+nsIControllers* nsGlobalWindowInner::GetControllers(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetControllersOuter, (aError), aError, nullptr);
+}
+
+nsresult nsGlobalWindowInner::GetControllers(nsIControllers** aResult) {
+  ErrorResult rv;
+  nsCOMPtr<nsIControllers> controllers = GetControllers(rv);
+  controllers.forget(aResult);
+
+  return rv.StealNSResult();
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::GetOpenerWindow(
+    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetOpenerWindowOuter, (), aError, nullptr);
+}
+
+void nsGlobalWindowInner::GetOpener(JSContext* aCx,
+                                    JS::MutableHandle<JS::Value> aRetval,
+                                    ErrorResult& aError) {
+  Nullable<WindowProxyHolder> opener = GetOpenerWindow(aError);
+  if (aError.Failed() || opener.IsNull()) {
+    aRetval.setNull();
+    return;
+  }
+
+  if (!ToJSValue(aCx, opener.Value(), aRetval)) {
+    aError.NoteJSContextException(aCx);
+  }
+}
+
+void nsGlobalWindowInner::SetOpener(JSContext* aCx,
+                                    JS::Handle<JS::Value> aOpener,
+                                    ErrorResult& aError) {
+  if (aOpener.isNull()) {
+    RefPtr<BrowsingContext> bc(GetBrowsingContext());
+    if (!bc->IsDiscarded()) {
+      bc->SetOpener(nullptr);
+    }
+    return;
+  }
+
+  // If something other than null is passed, just define aOpener on our inner
+  // window's JS object, wrapped into the current compartment so that for Xrays
+  // we define on the Xray expando object, but don't set it on the outer window,
+  // so that it'll get reset on navigation.  This is just like replaceable
+  // properties, but we're not quite readonly.
+  RedefineProperty(aCx, "opener", aOpener, aError);
+}
+
+void nsGlobalWindowInner::GetEvent(OwningEventOrUndefined& aRetval) {
+  if (mEvent) {
+    aRetval.SetAsEvent() = mEvent;
+  } else {
+    aRetval.SetUndefined();
+  }
+}
+
+void nsGlobalWindowInner::GetStatus(nsAString& aStatus, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetStatusOuter, (aStatus), aError, );
+}
+
+void nsGlobalWindowInner::SetStatus(const nsAString& aStatus,
+                                    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SetStatusOuter, (aStatus), aError, );
+}
+
+void nsGlobalWindowInner::GetName(nsAString& aName, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetNameOuter, (aName), aError, );
+}
+
+void nsGlobalWindowInner::SetName(const nsAString& aName,
+                                  mozilla::ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SetNameOuter, (aName, aError), aError, );
+}
+
+double nsGlobalWindowInner::GetInnerWidth(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetInnerWidthOuter, (aError), aError, 0);
+}
+
+nsresult nsGlobalWindowInner::GetInnerWidth(double* aWidth) {
+  ErrorResult rv;
+  // Callee doesn't care about the caller type, but play it safe.
+  *aWidth = GetInnerWidth(rv);
+  return rv.StealNSResult();
+}
+
+double nsGlobalWindowInner::GetInnerHeight(ErrorResult& aError) {
+  // We ignore aCallerType; we only have that argument because some other things
+  // called by GetReplaceableWindowCoord need it.  If this ever changes, fix
+  //   nsresult nsGlobalWindowInner::GetInnerHeight(double* aInnerWidth)
+  // to actually take a useful CallerType and pass it in here.
+  FORWARD_TO_OUTER_OR_THROW(GetInnerHeightOuter, (aError), aError, 0);
+}
+
+nsresult nsGlobalWindowInner::GetInnerHeight(double* aHeight) {
+  ErrorResult rv;
+  // Callee doesn't care about the caller type, but play it safe.
+  *aHeight = GetInnerHeight(rv);
+  return rv.StealNSResult();
+}
+
+int32_t nsGlobalWindowInner::GetOuterWidth(CallerType aCallerType,
+                                           ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetOuterWidthOuter, (aCallerType, aError), aError,
+                            0);
+}
+
+int32_t nsGlobalWindowInner::GetOuterHeight(CallerType aCallerType,
+                                            ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetOuterHeightOuter, (aCallerType, aError), aError,
+                            0);
+}
+
+double nsGlobalWindowInner::ScreenEdgeSlopX() const {
+  FORWARD_TO_OUTER(ScreenEdgeSlopX, (), 0);
+}
+
+double nsGlobalWindowInner::ScreenEdgeSlopY() const {
+  FORWARD_TO_OUTER(ScreenEdgeSlopY, (), 0);
+}
+
+int32_t nsGlobalWindowInner::GetScreenX(CallerType aCallerType,
+                                        ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScreenXOuter, (aCallerType, aError), aError, 0);
+}
+
+int32_t nsGlobalWindowInner::GetScreenY(CallerType aCallerType,
+                                        ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScreenYOuter, (aCallerType, aError), aError, 0);
+}
+
+float nsGlobalWindowInner::GetMozInnerScreenX(CallerType aCallerType,
+                                              ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetMozInnerScreenXOuter, (aCallerType), aError, 0);
+}
+
+float nsGlobalWindowInner::GetMozInnerScreenY(CallerType aCallerType,
+                                              ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetMozInnerScreenYOuter, (aCallerType), aError, 0);
+}
+
+static nsPresContext* GetPresContextForRatio(Document* aDoc) {
+  if (nsPresContext* presContext = aDoc->GetPresContext()) {
+    return presContext;
+  }
+  // We're in an undisplayed subdocument... There's not really an awesome way
+  // to tell what the right DPI is from here, so we try to walk up our parent
+  // document chain to the extent that the docs can observe each other.
+  Document* doc = aDoc;
+  while (doc->StyleOrLayoutObservablyDependsOnParentDocumentLayout()) {
+    doc = doc->GetInProcessParentDocument();
+    if (nsPresContext* presContext = doc->GetPresContext()) {
+      return presContext;
+    }
+  }
+  return nullptr;
+}
+
+double nsGlobalWindowInner::GetDevicePixelRatio(CallerType aCallerType,
+                                                ErrorResult& aError) {
+  ENSURE_ACTIVE_DOCUMENT(aError, 0.0);
+
+  RefPtr<nsPresContext> presContext = GetPresContextForRatio(mDoc);
+  if (NS_WARN_IF(!presContext)) {
+    // Still nothing, oh well.
+    return 1.0;
+  }
+
+  if (nsIGlobalObject::ShouldResistFingerprinting(
+          aCallerType, RFPTarget::WindowDevicePixelRatio)) {
+    // Spoofing the DevicePixelRatio causes blurriness in some situations
+    // on HiDPI displays. pdf.js is a non-system caller; but it can't
+    // expose the fingerprintable information, so we can safely disable
+    // spoofing in this situation. It doesn't address the issue for
+    // web-rendered content (including pdf.js instances on the web.)
+    // In the future we hope to have a better solution to fix all HiDPI
+    // blurriness...
+    nsAutoCString origin;
+    nsresult rv = this->GetPrincipal()->GetOrigin(origin);
+    if (NS_FAILED(rv) || origin != "resource://pdf.js"_ns) {
+      return 1.0;
+    }
+  }
+
+  if (aCallerType == CallerType::NonSystem) {
+    float overrideDPPX = presContext->GetOverrideDPPX();
+    if (overrideDPPX > 0.0f) {
+      return overrideDPPX;
+    }
+  }
+
+  return double(AppUnitsPerCSSPixel()) /
+         double(presContext->AppUnitsPerDevPixel());
+}
+
+double nsGlobalWindowInner::GetDesktopToDeviceScale(ErrorResult& aError) {
+  ENSURE_ACTIVE_DOCUMENT(aError, 0.0);
+  nsPresContext* presContext = GetPresContextForRatio(mDoc);
+  if (!presContext) {
+    return 1.0;
+  }
+  return presContext->DeviceContext()->GetDesktopToDeviceScale().scale;
+}
+
+int32_t nsGlobalWindowInner::RequestAnimationFrame(
+    FrameRequestCallback& aCallback, ErrorResult& aError) {
+  if (!mDoc) {
+    return 0;
+  }
+
+  if (GetWrapperPreserveColor()) {
+    js::NotifyAnimationActivity(GetWrapperPreserveColor());
+  }
+
+  DebuggerNotificationDispatch(this,
+                               DebuggerNotificationType::RequestAnimationFrame);
+
+  int32_t handle;
+  aError = mDoc->ScheduleFrameRequestCallback(aCallback, &handle);
+  return handle;
+}
+
+void nsGlobalWindowInner::CancelAnimationFrame(int32_t aHandle,
+                                               ErrorResult& aError) {
+  if (!mDoc) {
+    return;
+  }
+
+  DebuggerNotificationDispatch(this,
+                               DebuggerNotificationType::CancelAnimationFrame);
+
+  mDoc->CancelFrameRequestCallback(aHandle);
+}
+
+already_AddRefed<MediaQueryList> nsGlobalWindowInner::MatchMedia(
+    const nsACString& aMediaQueryList, CallerType aCallerType,
+    ErrorResult& aError) {
+  ENSURE_ACTIVE_DOCUMENT(aError, nullptr);
+  return mDoc->MatchMedia(aMediaQueryList, aCallerType);
+}
+
+int32_t nsGlobalWindowInner::GetScrollMinX(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollBoundaryOuter, (eSideLeft), aError, 0);
+}
+
+int32_t nsGlobalWindowInner::GetScrollMinY(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollBoundaryOuter, (eSideTop), aError, 0);
+}
+
+int32_t nsGlobalWindowInner::GetScrollMaxX(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollBoundaryOuter, (eSideRight), aError, 0);
+}
+
+int32_t nsGlobalWindowInner::GetScrollMaxY(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollBoundaryOuter, (eSideBottom), aError, 0);
+}
+
+double nsGlobalWindowInner::GetScrollX(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollXOuter, (), aError, 0);
+}
+
+double nsGlobalWindowInner::GetScrollY(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetScrollYOuter, (), aError, 0);
+}
+
+uint32_t nsGlobalWindowInner::Length() { FORWARD_TO_OUTER(Length, (), 0); }
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::GetTop(
+    mozilla::ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetTopOuter, (), aError, nullptr);
+}
+
+already_AddRefed<BrowsingContext> nsGlobalWindowInner::GetChildWindow(
+    const nsAString& aName) {
+  if (GetOuterWindowInternal()) {
+    return GetOuterWindowInternal()->GetChildWindow(aName);
+  }
+  return nullptr;
+}
+
+void nsGlobalWindowInner::RefreshRealmPrincipal() {
+  JS::SetRealmPrincipals(js::GetNonCCWObjectRealm(GetWrapperPreserveColor()),
+                         nsJSPrincipals::get(mDoc->NodePrincipal()));
+}
+
+void nsGlobalWindowInner::RefreshReduceTimerPrecisionCallerType() {
+  JS::SetRealmReduceTimerPrecisionCallerType(
+      js::GetNonCCWObjectRealm(GetWrapperPreserveColor()),
+      RTPCallerTypeToToken(GetRTPCallerType()));
+}
+
+already_AddRefed<nsIWidget> nsGlobalWindowInner::GetMainWidget() {
+  FORWARD_TO_OUTER(GetMainWidget, (), nullptr);
+}
+
+nsIWidget* nsGlobalWindowInner::GetNearestWidget() const {
+  if (GetOuterWindowInternal()) {
+    return GetOuterWindowInternal()->GetNearestWidget();
+  }
+  return nullptr;
+}
+
+void nsGlobalWindowInner::SetFullScreen(bool aFullscreen,
+                                        mozilla::ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SetFullscreenOuter, (aFullscreen, aError), aError,
+                            /* void */);
+}
+
+bool nsGlobalWindowInner::GetFullScreen(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetFullscreenOuter, (), aError, false);
+}
+
+bool nsGlobalWindowInner::GetFullScreen() {
+  ErrorResult dummy;
+  bool fullscreen = GetFullScreen(dummy);
+  dummy.SuppressException();
+  return fullscreen;
+}
+
+void nsGlobalWindowInner::Dump(const nsAString& aStr) {
+  if (!nsJSUtils::DumpEnabled()) {
+    return;
+  }
+
+  char* cstr = ToNewUTF8String(aStr);
+
+#if defined(XP_MACOSX)
+  // have to convert \r to \n so that printing to the console works
+  char *c = cstr, *cEnd = cstr + strlen(cstr);
+  while (c < cEnd) {
+    if (*c == '\r') *c = '\n';
+    c++;
+  }
+#endif
+
+  if (cstr) {
+    MOZ_LOG(nsContentUtils::DOMDumpLog(), LogLevel::Debug,
+            ("[Window.Dump] %s", cstr));
+#ifdef XP_WIN
+    PrintToDebugger(cstr);
+#endif
+#ifdef ANDROID
+    __android_log_write(ANDROID_LOG_INFO, "GeckoDump", cstr);
+#endif
+    FILE* fp = gDumpFile ? gDumpFile : stdout;
+    fputs(cstr, fp);
+    fflush(fp);
+    free(cstr);
+  }
+}
+
+void nsGlobalWindowInner::Alert(nsIPrincipal& aSubjectPrincipal,
+                                ErrorResult& aError) {
+  Alert(u""_ns, aSubjectPrincipal, aError);
+}
+
+void nsGlobalWindowInner::Alert(const nsAString& aMessage,
+                                nsIPrincipal& aSubjectPrincipal,
+                                ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(AlertOuter, (aMessage, aSubjectPrincipal, aError),
+                            aError, );
+}
+
+bool nsGlobalWindowInner::Confirm(const nsAString& aMessage,
+                                  nsIPrincipal& aSubjectPrincipal,
+                                  ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(ConfirmOuter, (aMessage, aSubjectPrincipal, aError),
+                            aError, false);
+}
+
+already_AddRefed<Promise> nsGlobalWindowInner::Fetch(
+    const RequestOrUSVString& aInput, const RequestInit& aInit,
+    CallerType aCallerType, ErrorResult& aRv) {
+  return FetchRequest(this, aInput, aInit, aCallerType, aRv);
+}
+
+void nsGlobalWindowInner::Prompt(const nsAString& aMessage,
+                                 const nsAString& aInitial, nsAString& aReturn,
+                                 nsIPrincipal& aSubjectPrincipal,
+                                 ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      PromptOuter, (aMessage, aInitial, aReturn, aSubjectPrincipal, aError),
+      aError, );
+}
+
+void nsGlobalWindowInner::Focus(CallerType aCallerType, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(FocusOuter,
+                            (aCallerType, /* aFromOtherProcess */ false,
+                             nsFocusManager::GenerateFocusActionId()),
+                            aError, );
+}
+
+nsresult nsGlobalWindowInner::Focus(CallerType aCallerType) {
+  ErrorResult rv;
+  Focus(aCallerType, rv);
+
+  return rv.StealNSResult();
+}
+
+void nsGlobalWindowInner::Blur(CallerType aCallerType, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(BlurOuter, (aCallerType), aError, );
+}
+
+void nsGlobalWindowInner::Stop(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(StopOuter, (aError), aError, );
+}
+
+void nsGlobalWindowInner::Print(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(PrintOuter, (aError), aError, );
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::PrintPreview(
+    nsIPrintSettings* aSettings, nsIWebProgressListener* aListener,
+    nsIDocShell* aDocShellToCloneInto, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      Print,
+      (aSettings,
+       /* aRemotePrintJob = */ nullptr, aListener, aDocShellToCloneInto,
+       nsGlobalWindowOuter::IsPreview::Yes,
+       nsGlobalWindowOuter::IsForWindowDotPrint::No,
+       /* aPrintPreviewCallback = */ nullptr, aError),
+      aError, nullptr);
+}
+
+void nsGlobalWindowInner::MoveTo(int32_t aXPos, int32_t aYPos,
+                                 CallerType aCallerType, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(MoveToOuter, (aXPos, aYPos, aCallerType, aError),
+                            aError, );
+}
+
+void nsGlobalWindowInner::MoveBy(int32_t aXDif, int32_t aYDif,
+                                 CallerType aCallerType, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(MoveByOuter, (aXDif, aYDif, aCallerType, aError),
+                            aError, );
+}
+
+void nsGlobalWindowInner::ResizeTo(int32_t aWidth, int32_t aHeight,
+                                   CallerType aCallerType,
+                                   ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(ResizeToOuter,
+                            (aWidth, aHeight, aCallerType, aError), aError, );
+}
+
+void nsGlobalWindowInner::ResizeBy(int32_t aWidthDif, int32_t aHeightDif,
+                                   CallerType aCallerType,
+                                   ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      ResizeByOuter, (aWidthDif, aHeightDif, aCallerType, aError), aError, );
+}
+
+void nsGlobalWindowInner::SizeToContent(CallerType aCallerType,
+                                        ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SizeToContentOuter, (aCallerType, {}, aError),
+                            aError, );
+}
+
+void nsGlobalWindowInner::SizeToContentConstrained(
+    const SizeToContentConstraints& aConstraints, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      SizeToContentOuter, (CallerType::System, aConstraints, aError), aError, );
+}
+
+already_AddRefed<nsPIWindowRoot> nsGlobalWindowInner::GetTopWindowRoot() {
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  if (!outer) {
+    return nullptr;
+  }
+  return outer->GetTopWindowRoot();
+}
+
+void nsGlobalWindowInner::Scroll(double aXScroll, double aYScroll) {
+  // Convert -Inf, Inf, and NaN to 0; otherwise, convert by C-style cast.
+  auto scrollPos = CSSIntPoint::Truncate(mozilla::ToZeroIfNonfinite(aXScroll),
+                                         mozilla::ToZeroIfNonfinite(aYScroll));
+  ScrollTo(scrollPos, ScrollOptions());
+}
+
+void nsGlobalWindowInner::ScrollTo(double aXScroll, double aYScroll) {
+  // Convert -Inf, Inf, and NaN to 0; otherwise, convert by C-style cast.
+  auto scrollPos = CSSIntPoint::Truncate(mozilla::ToZeroIfNonfinite(aXScroll),
+                                         mozilla::ToZeroIfNonfinite(aYScroll));
+  ScrollTo(scrollPos, ScrollOptions());
+}
+
+void nsGlobalWindowInner::ScrollTo(const ScrollToOptions& aOptions) {
+  // When scrolling to a non-zero offset, we need to determine whether that
+  // position is within our scrollable range, so we need updated layout
+  // information which requires a layout flush, otherwise all we need is to
+  // flush frames to be able to access our scrollable frame here.
+  FlushType flushType =
+      ((aOptions.mLeft.WasPassed() && aOptions.mLeft.Value() > 0) ||
+       (aOptions.mTop.WasPassed() && aOptions.mTop.Value() > 0))
+          ? FlushType::Layout
+          : FlushType::Frames;
+  FlushPendingNotifications(flushType);
+  nsIScrollableFrame* sf = GetScrollFrame();
+
+  if (sf) {
+    CSSIntPoint scrollPos = sf->GetRoundedScrollPositionCSSPixels();
+    if (aOptions.mLeft.WasPassed()) {
+      scrollPos.x = static_cast<int32_t>(
+          mozilla::ToZeroIfNonfinite(aOptions.mLeft.Value()));
+    }
+    if (aOptions.mTop.WasPassed()) {
+      scrollPos.y = static_cast<int32_t>(
+          mozilla::ToZeroIfNonfinite(aOptions.mTop.Value()));
+    }
+
+    ScrollTo(scrollPos, aOptions);
+  }
+}
+
+void nsGlobalWindowInner::Scroll(const ScrollToOptions& aOptions) {
+  ScrollTo(aOptions);
+}
+
+void nsGlobalWindowInner::ScrollTo(const CSSIntPoint& aScroll,
+                                   const ScrollOptions& aOptions) {
+  // When scrolling to a non-zero offset, we need to determine whether that
+  // position is within our scrollable range, so we need updated layout
+  // information which requires a layout flush, otherwise all we need is to
+  // flush frames to be able to access our scrollable frame here.
+  FlushType flushType =
+      (aScroll.x || aScroll.y) ? FlushType::Layout : FlushType::Frames;
+  FlushPendingNotifications(flushType);
+  nsIScrollableFrame* sf = GetScrollFrame();
+
+  if (sf) {
+    // Here we calculate what the max pixel value is that we can
+    // scroll to, we do this by dividing maxint with the pixel to
+    // twips conversion factor, and subtracting 4, the 4 comes from
+    // experimenting with this value, anything less makes the view
+    // code not scroll correctly, I have no idea why. -- jst
+    const int32_t maxpx = nsPresContext::AppUnitsToIntCSSPixels(0x7fffffff) - 4;
+
+    CSSIntPoint scroll(aScroll);
+    if (scroll.x > maxpx) {
+      scroll.x = maxpx;
+    }
+
+    if (scroll.y > maxpx) {
+      scroll.y = maxpx;
+    }
+
+    ScrollMode scrollMode = sf->IsSmoothScroll(aOptions.mBehavior)
+                                ? ScrollMode::SmoothMsd
+                                : ScrollMode::Instant;
+
+    sf->ScrollToCSSPixels(scroll, scrollMode);
+  }
+}
+
+void nsGlobalWindowInner::ScrollBy(double aXScrollDif, double aYScrollDif) {
+  FlushPendingNotifications(FlushType::Layout);
+  nsIScrollableFrame* sf = GetScrollFrame();
+
+  if (sf) {
+    // It seems like it would make more sense for ScrollBy to use
+    // SMOOTH mode, but tests seem to depend on the synchronous behaviour.
+    // Perhaps Web content does too.
+    ScrollToOptions options;
+    options.mLeft.Construct(aXScrollDif);
+    options.mTop.Construct(aYScrollDif);
+    ScrollBy(options);
+  }
+}
+
+void nsGlobalWindowInner::ScrollBy(const ScrollToOptions& aOptions) {
+  FlushPendingNotifications(FlushType::Layout);
+  nsIScrollableFrame* sf = GetScrollFrame();
+
+  if (sf) {
+    CSSIntPoint scrollDelta;
+    if (aOptions.mLeft.WasPassed()) {
+      scrollDelta.x = static_cast<int32_t>(
+          mozilla::ToZeroIfNonfinite(aOptions.mLeft.Value()));
+    }
+    if (aOptions.mTop.WasPassed()) {
+      scrollDelta.y = static_cast<int32_t>(
+          mozilla::ToZeroIfNonfinite(aOptions.mTop.Value()));
+    }
+
+    ScrollMode scrollMode = sf->IsSmoothScroll(aOptions.mBehavior)
+                                ? ScrollMode::SmoothMsd
+                                : ScrollMode::Instant;
+
+    sf->ScrollByCSSPixels(scrollDelta, scrollMode);
+  }
+}
+
+void nsGlobalWindowInner::ScrollByLines(int32_t numLines,
+                                        const ScrollOptions& aOptions) {
+  FlushPendingNotifications(FlushType::Layout);
+  nsIScrollableFrame* sf = GetScrollFrame();
+  if (sf) {
+    // It seems like it would make more sense for ScrollByLines to use
+    // SMOOTH mode, but tests seem to depend on the synchronous behaviour.
+    // Perhaps Web content does too.
+    ScrollMode scrollMode = sf->IsSmoothScroll(aOptions.mBehavior)
+                                ? ScrollMode::SmoothMsd
+                                : ScrollMode::Instant;
+
+    sf->ScrollBy(nsIntPoint(0, numLines), ScrollUnit::LINES, scrollMode);
+  }
+}
+
+void nsGlobalWindowInner::ScrollByPages(int32_t numPages,
+                                        const ScrollOptions& aOptions) {
+  FlushPendingNotifications(FlushType::Layout);
+  nsIScrollableFrame* sf = GetScrollFrame();
+  if (sf) {
+    // It seems like it would make more sense for ScrollByPages to use
+    // SMOOTH mode, but tests seem to depend on the synchronous behaviour.
+    // Perhaps Web content does too.
+    ScrollMode scrollMode = sf->IsSmoothScroll(aOptions.mBehavior)
+                                ? ScrollMode::SmoothMsd
+                                : ScrollMode::Instant;
+
+    sf->ScrollBy(nsIntPoint(0, numPages), ScrollUnit::PAGES, scrollMode);
+  }
+}
+
+void nsGlobalWindowInner::MozScrollSnap() {
+  FlushPendingNotifications(FlushType::Layout);
+  nsIScrollableFrame* sf = GetScrollFrame();
+  if (sf) {
+    sf->ScrollSnap();
+  }
+}
+
+void nsGlobalWindowInner::ClearTimeout(int32_t aHandle) {
+  DebuggerNotificationDispatch(this, DebuggerNotificationType::ClearTimeout);
+
+  if (aHandle > 0) {
+    mTimeoutManager->ClearTimeout(aHandle, Timeout::Reason::eTimeoutOrInterval);
+  }
+}
+
+void nsGlobalWindowInner::ClearInterval(int32_t aHandle) {
+  DebuggerNotificationDispatch(this, DebuggerNotificationType::ClearInterval);
+
+  if (aHandle > 0) {
+    mTimeoutManager->ClearTimeout(aHandle, Timeout::Reason::eTimeoutOrInterval);
+  }
+}
+
+void nsGlobalWindowInner::SetResizable(bool aResizable) const {
+  // nop
+}
+
+void nsGlobalWindowInner::CaptureEvents() {
+  if (mDoc) {
+    mDoc->WarnOnceAbout(DeprecatedOperations::eUseOfCaptureEvents);
+  }
+}
+
+void nsGlobalWindowInner::ReleaseEvents() {
+  if (mDoc) {
+    mDoc->WarnOnceAbout(DeprecatedOperations::eUseOfReleaseEvents);
+  }
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::Open(const nsAString& aUrl,
+                                                      const nsAString& aName,
+                                                      const nsAString& aOptions,
+                                                      ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(OpenOuter, (aUrl, aName, aOptions, aError), aError,
+                            nullptr);
+}
+
+Nullable<WindowProxyHolder> nsGlobalWindowInner::OpenDialog(
+    JSContext* aCx, const nsAString& aUrl, const nsAString& aName,
+    const nsAString& aOptions, const Sequence<JS::Value>& aExtraArgument,
+    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      OpenDialogOuter, (aCx, aUrl, aName, aOptions, aExtraArgument, aError),
+      aError, nullptr);
+}
+
+WindowProxyHolder nsGlobalWindowInner::GetFrames(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetFramesOuter, (), aError, Window());
+}
+
+void nsGlobalWindowInner::PostMessageMoz(JSContext* aCx,
+                                         JS::Handle<JS::Value> aMessage,
+                                         const nsAString& aTargetOrigin,
+                                         JS::Handle<JS::Value> aTransfer,
+                                         nsIPrincipal& aSubjectPrincipal,
+                                         ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(
+      PostMessageMozOuter,
+      (aCx, aMessage, aTargetOrigin, aTransfer, aSubjectPrincipal, aError),
+      aError, );
+}
+
+void nsGlobalWindowInner::PostMessageMoz(JSContext* aCx,
+                                         JS::Handle<JS::Value> aMessage,
+                                         const nsAString& aTargetOrigin,
+                                         const Sequence<JSObject*>& aTransfer,
+                                         nsIPrincipal& aSubjectPrincipal,
+                                         ErrorResult& aRv) {
+  JS::Rooted<JS::Value> transferArray(aCx, JS::UndefinedValue());
+
+  aRv = nsContentUtils::CreateJSValueFromSequenceOfObject(aCx, aTransfer,
+                                                          &transferArray);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  PostMessageMoz(aCx, aMessage, aTargetOrigin, transferArray, aSubjectPrincipal,
+                 aRv);
+}
+
+void nsGlobalWindowInner::PostMessageMoz(
+    JSContext* aCx, JS::Handle<JS::Value> aMessage,
+    const WindowPostMessageOptions& aOptions, nsIPrincipal& aSubjectPrincipal,
+    ErrorResult& aRv) {
+  JS::Rooted<JS::Value> transferArray(aCx, JS::UndefinedValue());
+
+  aRv = nsContentUtils::CreateJSValueFromSequenceOfObject(
+      aCx, aOptions.mTransfer, &transferArray);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  PostMessageMoz(aCx, aMessage, aOptions.mTargetOrigin, transferArray,
+                 aSubjectPrincipal, aRv);
+}
+
+void nsGlobalWindowInner::Close(CallerType aCallerType, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(CloseOuter, (aCallerType == CallerType::System),
+                            aError, );
+}
+
+nsresult nsGlobalWindowInner::Close() {
+  FORWARD_TO_OUTER(Close, (), NS_ERROR_UNEXPECTED);
+}
+
+bool nsGlobalWindowInner::IsInModalState() {
+  FORWARD_TO_OUTER(IsInModalState, (), false);
+}
+
+// static
+void nsGlobalWindowInner::NotifyDOMWindowDestroyed(
+    nsGlobalWindowInner* aWindow) {
+  nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
+  if (observerService) {
+    observerService->NotifyObservers(ToSupports(aWindow),
+                                     DOM_WINDOW_DESTROYED_TOPIC, nullptr);
+  }
+}
+
+void nsGlobalWindowInner::NotifyWindowIDDestroyed(const char* aTopic) {
+  nsCOMPtr<nsIRunnable> runnable =
+      new WindowDestroyedEvent(this, mWindowID, aTopic);
+  Dispatch(runnable.forget());
+}
+
+// static
+void nsGlobalWindowInner::NotifyDOMWindowFrozen(nsGlobalWindowInner* aWindow) {
+  if (aWindow) {
+    nsCOMPtr<nsIObserverService> observerService =
+        services::GetObserverService();
+    if (observerService) {
+      observerService->NotifyObservers(ToSupports(aWindow),
+                                       DOM_WINDOW_FROZEN_TOPIC, nullptr);
+    }
+  }
+}
+
+// static
+void nsGlobalWindowInner::NotifyDOMWindowThawed(nsGlobalWindowInner* aWindow) {
+  if (aWindow) {
+    nsCOMPtr<nsIObserverService> observerService =
+        services::GetObserverService();
+    if (observerService) {
+      observerService->NotifyObservers(ToSupports(aWindow),
+                                       DOM_WINDOW_THAWED_TOPIC, nullptr);
+    }
+  }
+}
+
+Element* nsGlobalWindowInner::GetFrameElement(nsIPrincipal& aSubjectPrincipal,
+                                              ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetFrameElement, (aSubjectPrincipal), aError,
+                            nullptr);
+}
+
+Element* nsGlobalWindowInner::GetRealFrameElement(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetFrameElement, (), aError, nullptr);
+}
+
+void nsGlobalWindowInner::UpdateCommands(const nsAString& anAction) {
+  if (GetOuterWindowInternal()) {
+    GetOuterWindowInternal()->UpdateCommands(anAction);
+  }
+}
+
+Selection* nsGlobalWindowInner::GetSelection(ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetSelectionOuter, (), aError, nullptr);
+}
+
+WebTaskScheduler* nsGlobalWindowInner::Scheduler() {
+  if (!mWebTaskScheduler) {
+    mWebTaskScheduler = WebTaskScheduler::CreateForMainThread(this);
+  }
+  MOZ_ASSERT(mWebTaskScheduler);
+  return mWebTaskScheduler;
+}
+
+bool nsGlobalWindowInner::Find(const nsAString& aString, bool aCaseSensitive,
+                               bool aBackwards, bool aWrapAround,
+                               bool aWholeWord, bool aSearchInFrames,
+                               bool aShowDialog, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(FindOuter,
+                            (aString, aCaseSensitive, aBackwards, aWrapAround,
+                             aWholeWord, aSearchInFrames, aShowDialog, aError),
+                            aError, false);
+}
+
+void nsGlobalWindowInner::GetOrigin(nsAString& aOrigin) {
+  nsContentUtils::GetWebExposedOriginSerialization(GetPrincipal(), aOrigin);
+}
+
+// See also AutoJSAPI::ReportException
+void nsGlobalWindowInner::ReportError(JSContext* aCx,
+                                      JS::Handle<JS::Value> aError,
+                                      CallerType aCallerType,
+                                      ErrorResult& aRv) {
+  if (MOZ_UNLIKELY(!HasActiveDocument())) {
+    return aRv.Throw(NS_ERROR_XPC_SECURITY_MANAGER_VETO);
+  }
+
+  JS::ErrorReportBuilder jsReport(aCx);
+  JS::ExceptionStack exnStack(aCx, aError, nullptr);
+  if (!jsReport.init(aCx, exnStack, JS::ErrorReportBuilder::NoSideEffects)) {
+    return aRv.NoteJSContextException(aCx);
+  }
+
+  RefPtr<xpc::ErrorReport> xpcReport = new xpc::ErrorReport();
+  bool isChrome = aCallerType == CallerType::System;
+  xpcReport->Init(jsReport.report(), jsReport.toStringResult().c_str(),
+                  isChrome, WindowID());
+
+  JS::RootingContext* rcx = JS::RootingContext::get(aCx);
+  DispatchScriptErrorEvent(this, rcx, xpcReport, exnStack.exception(),
+                           exnStack.stack());
+}
+
+void nsGlobalWindowInner::Atob(const nsAString& aAsciiBase64String,
+                               nsAString& aBinaryData, ErrorResult& aError) {
+  aError = nsContentUtils::Atob(aAsciiBase64String, aBinaryData);
+}
+
+void nsGlobalWindowInner::Btoa(const nsAString& aBinaryData,
+                               nsAString& aAsciiBase64String,
+                               ErrorResult& aError) {
+  aError = nsContentUtils::Btoa(aBinaryData, aAsciiBase64String);
+}
+
+//*****************************************************************************
+// EventTarget
+//*****************************************************************************
+
+nsPIDOMWindowOuter* nsGlobalWindowInner::GetOwnerGlobalForBindingsInternal() {
+  return nsPIDOMWindowOuter::GetFromCurrentInner(this);
+}
+
+bool nsGlobalWindowInner::DispatchEvent(Event& aEvent, CallerType aCallerType,
+                                        ErrorResult& aRv) {
+  if (!IsCurrentInnerWindow()) {
+    NS_WARNING(
+        "DispatchEvent called on non-current inner window, dropping. "
+        "Please check the window in the caller instead.");
+    aRv.Throw(NS_ERROR_FAILURE);
+    return false;
+  }
+
+  if (!mDoc) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return false;
+  }
+
+  // Obtain a presentation shell
+  RefPtr<nsPresContext> presContext = mDoc->GetPresContext();
+
+  nsEventStatus status = nsEventStatus_eIgnore;
+  nsresult rv = EventDispatcher::DispatchDOMEvent(this, nullptr, &aEvent,
+                                                  presContext, &status);
+  bool retval = !aEvent.DefaultPrevented(aCallerType);
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+  }
+  return retval;
+}
+
+mozilla::Maybe<mozilla::dom::EventCallbackDebuggerNotificationType>
+nsGlobalWindowInner::GetDebuggerNotificationType() const {
+  return mozilla::Some(
+      mozilla::dom::EventCallbackDebuggerNotificationType::Global);
+}
+
+bool nsGlobalWindowInner::ComputeDefaultWantsUntrusted(ErrorResult& aRv) {
+  return !nsContentUtils::IsChromeDoc(mDoc);
+}
+
+EventListenerManager* nsGlobalWindowInner::GetOrCreateListenerManager() {
+  if (!mListenerManager) {
+    mListenerManager =
+        new EventListenerManager(static_cast<EventTarget*>(this));
+  }
+
+  return mListenerManager;
+}
+
+EventListenerManager* nsGlobalWindowInner::GetExistingListenerManager() const {
+  return mListenerManager;
+}
+
+mozilla::dom::DebuggerNotificationManager*
+nsGlobalWindowInner::GetOrCreateDebuggerNotificationManager() {
+  if (!mDebuggerNotificationManager) {
+    mDebuggerNotificationManager = new DebuggerNotificationManager(this);
+  }
+
+  return mDebuggerNotificationManager;
+}
+
+mozilla::dom::DebuggerNotificationManager*
+nsGlobalWindowInner::GetExistingDebuggerNotificationManager() {
+  return mDebuggerNotificationManager;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsPIDOMWindow
+//*****************************************************************************
+
+Location* nsGlobalWindowInner::Location() {
+  if (!mLocation) {
+    mLocation = new dom::Location(this);
+  }
+
+  return mLocation;
+}
+
+void nsGlobalWindowInner::MaybeUpdateTouchState() {
+  if (mMayHaveTouchEventListener) {
+    nsCOMPtr<nsIObserverService> observerService =
+        services::GetObserverService();
+
+    if (observerService) {
+      observerService->NotifyObservers(static_cast<nsIDOMWindow*>(this),
+                                       DOM_TOUCH_LISTENER_ADDED, nullptr);
+    }
+  }
+}
+
+void nsGlobalWindowInner::EnableGamepadUpdates() {
+  if (mHasGamepad) {
+    RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());
+    if (gamepadManager) {
+      gamepadManager->AddListener(this);
+    }
+  }
+}
+
+void nsGlobalWindowInner::DisableGamepadUpdates() {
+  if (mHasGamepad) {
+    RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());
+    if (gamepadManager) {
+      gamepadManager->RemoveListener(this);
+    }
+  }
+}
+
+void nsGlobalWindowInner::EnableVRUpdates() {
+  // We need to create a VREventObserver before we can either detect XR runtimes
+  // or start an XR session
+  if (!mVREventObserver && (mHasXRSession || mXRRuntimeDetectionInFlight)) {
+    // Assert that we are not creating the observer while IsDying() as
+    // that would result in a leak.  VREventObserver holds a RefPtr to
+    // this nsGlobalWindowInner and would prevent it from being deallocated.
+    MOZ_ASSERT(!IsDying(),
+               "Creating a VREventObserver for an nsGlobalWindow that is "
+               "dying would cause it to leak.");
+    mVREventObserver = new VREventObserver(this);
+  }
+  // If the content has an XR session, then we need to tell
+  // VREventObserver that there is VR activity.
+  if (mHasXRSession) {
+    nsPIDOMWindowOuter* outer = GetOuterWindow();
+    if (outer && !outer->IsBackground()) {
+      StartVRActivity();
+    }
+  }
+}
+
+void nsGlobalWindowInner::DisableVRUpdates() {
+  if (mVREventObserver) {
+    mVREventObserver->DisconnectFromOwner();
+    mVREventObserver = nullptr;
+  }
+}
+
+void nsGlobalWindowInner::ResetVRTelemetry(bool aUpdate) {
+  if (mVREventObserver) {
+    mVREventObserver->UpdateSpentTimeIn2DTelemetry(aUpdate);
+  }
+}
+
+void nsGlobalWindowInner::StartVRActivity() {
+  /**
+   * If the content has an XR session, tell
+   * the VREventObserver that the window is accessing
+   * VR devices.
+   *
+   * It's possible to have a VREventObserver without
+   * and XR session, if we are using it to get updates
+   * about XR runtime enumeration.  In this case,
+   * we would not tell the VREventObserver that
+   * we are accessing VR devices.
+   */
+  if (mVREventObserver && mHasXRSession) {
+    mVREventObserver->StartActivity();
+  }
+}
+
+void nsGlobalWindowInner::StopVRActivity() {
+  /**
+   * If the content has an XR session, tell
+   * the VReventObserver that the window is no longer
+   * accessing VR devices.  This does not stop the
+   * XR session itself, which may be resumed with
+   * EnableVRUpdates.
+   * It's possible to have a VREventObserver without
+   * and XR session, if we are using it to get updates
+   * about XR runtime enumeration.  In this case,
+   * we would not tell the VREventObserver that
+   * we ending an activity that accesses VR devices.
+   */
+  if (mVREventObserver && mHasXRSession) {
+    mVREventObserver->StopActivity();
+  }
+}
+
+void nsGlobalWindowInner::SetFocusedElement(Element* aElement,
+                                            uint32_t aFocusMethod,
+                                            bool aNeedsFocus) {
+  if (aElement && aElement->GetComposedDoc() != mDoc) {
+    NS_WARNING("Trying to set focus to a node from a wrong document");
+    return;
+  }
+
+  if (IsDying()) {
+    NS_ASSERTION(!aElement, "Trying to focus cleaned up window!");
+    aElement = nullptr;
+    aNeedsFocus = false;
+  }
+  if (mFocusedElement != aElement) {
+    UpdateCanvasFocus(false, aElement);
+    mFocusedElement = aElement;
+    // TODO: Maybe this should be set on refocus too?
+    mFocusMethod = aFocusMethod & nsIFocusManager::METHOD_MASK;
+  }
+
+  if (mFocusedElement) {
+    // if a node was focused by a keypress, turn on focus rings for the
+    // window.
+    if (mFocusMethod & nsIFocusManager::FLAG_BYKEY) {
+      mUnknownFocusMethodShouldShowOutline = true;
+      mFocusByKeyOccurred = true;
+    } else if (nsFocusManager::GetFocusMoveActionCause(mFocusMethod) !=
+               widget::InputContextAction::CAUSE_UNKNOWN) {
+      mUnknownFocusMethodShouldShowOutline = false;
+    } else if (aFocusMethod & nsIFocusManager::FLAG_NOSHOWRING) {
+      // If we get focused via script, and script has explicitly opted out of
+      // outlines via FLAG_NOSHOWRING, we don't want to make a refocus start
+      // showing outlines.
+      mUnknownFocusMethodShouldShowOutline = false;
+    }
+  }
+
+  if (aNeedsFocus) {
+    mNeedsFocus = aNeedsFocus;
+  }
+}
+
+uint32_t nsGlobalWindowInner::GetFocusMethod() { return mFocusMethod; }
+
+bool nsGlobalWindowInner::ShouldShowFocusRing() {
+  if (mFocusByKeyOccurred &&
+      StaticPrefs::browser_display_always_show_rings_after_key_focus()) {
+    return true;
+  }
+  return StaticPrefs::browser_display_show_focus_rings();
+}
+
+bool nsGlobalWindowInner::TakeFocus(bool aFocus, uint32_t aFocusMethod) {
+  if (IsDying()) {
+    return false;
+  }
+
+  if (aFocus) {
+    mFocusMethod = aFocusMethod & nsIFocusManager::METHOD_MASK;
+  }
+
+  if (mHasFocus != aFocus) {
+    mHasFocus = aFocus;
+    UpdateCanvasFocus(true, mFocusedElement);
+  }
+
+  // if mNeedsFocus is true, then the document has not yet received a
+  // document-level focus event. If there is a root content node, then return
+  // true to tell the calling focus manager that a focus event is expected. If
+  // there is no root content node, the document hasn't loaded enough yet, or
+  // there isn't one and there is no point in firing a focus event.
+  if (aFocus && mNeedsFocus && mDoc && mDoc->GetRootElement() != nullptr) {
+    mNeedsFocus = false;
+    return true;
+  }
+
+  mNeedsFocus = false;
+  return false;
+}
+
+void nsGlobalWindowInner::SetReadyForFocus() {
+  bool oldNeedsFocus = mNeedsFocus;
+  mNeedsFocus = false;
+
+  if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) {
+    nsCOMPtr<nsPIDOMWindowOuter> outerWindow = GetOuterWindow();
+    fm->WindowShown(outerWindow, oldNeedsFocus);
+  }
+}
+
+void nsGlobalWindowInner::PageHidden() {
+  // the window is being hidden, so tell the focus manager that the frame is
+  // no longer valid. Use the persisted field to determine if the document
+  // is being destroyed.
+
+  if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) {
+    nsCOMPtr<nsPIDOMWindowOuter> outerWindow = GetOuterWindow();
+    fm->WindowHidden(outerWindow, nsFocusManager::GenerateFocusActionId());
+  }
+
+  mNeedsFocus = true;
+}
+
+class HashchangeCallback : public Runnable {
+ public:
+  HashchangeCallback(const nsAString& aOldURL, const nsAString& aNewURL,
+                     nsGlobalWindowInner* aWindow)
+      : mozilla::Runnable("HashchangeCallback"), mWindow(aWindow) {
+    MOZ_ASSERT(mWindow);
+    mOldURL.Assign(aOldURL);
+    mNewURL.Assign(aNewURL);
+  }
+
+  NS_IMETHOD Run() override {
+    MOZ_ASSERT(NS_IsMainThread(), "Should be called on the main thread.");
+    return mWindow->FireHashchange(mOldURL, mNewURL);
+  }
+
+ private:
+  nsString mOldURL;
+  nsString mNewURL;
+  RefPtr<nsGlobalWindowInner> mWindow;
+};
+
+nsresult nsGlobalWindowInner::DispatchAsyncHashchange(nsIURI* aOldURI,
+                                                      nsIURI* aNewURI) {
+  // Make sure that aOldURI and aNewURI are identical up to the '#', and that
+  // their hashes are different.
+  bool equal = false;
+  NS_ENSURE_STATE(NS_SUCCEEDED(aOldURI->EqualsExceptRef(aNewURI, &equal)) &&
+                  equal);
+  nsAutoCString oldHash, newHash;
+  bool oldHasHash, newHasHash;
+  NS_ENSURE_STATE(NS_SUCCEEDED(aOldURI->GetRef(oldHash)) &&
+                  NS_SUCCEEDED(aNewURI->GetRef(newHash)) &&
+                  NS_SUCCEEDED(aOldURI->GetHasRef(&oldHasHash)) &&
+                  NS_SUCCEEDED(aNewURI->GetHasRef(&newHasHash)) &&
+                  (oldHasHash != newHasHash || !oldHash.Equals(newHash)));
+
+  nsAutoCString oldSpec, newSpec;
+  nsresult rv = aOldURI->GetSpec(oldSpec);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = aNewURI->GetSpec(newSpec);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NS_ConvertUTF8toUTF16 oldWideSpec(oldSpec);
+  NS_ConvertUTF8toUTF16 newWideSpec(newSpec);
+
+  nsCOMPtr<nsIRunnable> callback =
+      new HashchangeCallback(oldWideSpec, newWideSpec, this);
+  return Dispatch(callback.forget());
+}
+
+nsresult nsGlobalWindowInner::FireHashchange(const nsAString& aOldURL,
+                                             const nsAString& aNewURL) {
+  // Don't do anything if the window is frozen.
+  if (IsFrozen()) {
+    return NS_OK;
+  }
+
+  // Get a presentation shell for use in creating the hashchange event.
+  NS_ENSURE_STATE(IsCurrentInnerWindow());
+
+  HashChangeEventInit init;
+  init.mNewURL = aNewURL;
+  init.mOldURL = aOldURL;
+
+  RefPtr<HashChangeEvent> event =
+      HashChangeEvent::Constructor(this, u"hashchange"_ns, init);
+
+  event->SetTrusted(true);
+
+  ErrorResult rv;
+  DispatchEvent(*event, rv);
+  return rv.StealNSResult();
+}
+
+nsresult nsGlobalWindowInner::DispatchSyncPopState() {
+  NS_ASSERTION(nsContentUtils::IsSafeToRunScript(),
+               "Must be safe to run script here.");
+
+  // Bail if the window is frozen.
+  if (IsFrozen()) {
+    return NS_OK;
+  }
+
+  AutoJSAPI jsapi;
+  bool result = jsapi.Init(this);
+  NS_ENSURE_TRUE(result, NS_ERROR_FAILURE);
+
+  JSContext* cx = jsapi.cx();
+
+  // Get the document's pending state object -- it contains the data we're
+  // going to send along with the popstate event.  The object is serialized
+  // using structured clone.
+  JS::Rooted<JS::Value> stateJSValue(cx);
+  nsresult rv = mDoc->GetStateObject(&stateJSValue);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!JS_WrapValue(cx, &stateJSValue)) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  RootedDictionary<PopStateEventInit> init(cx);
+  init.mState = stateJSValue;
+
+  RefPtr<PopStateEvent> event =
+      PopStateEvent::Constructor(this, u"popstate"_ns, init);
+  event->SetTrusted(true);
+  event->SetTarget(this);
+
+  ErrorResult err;
+  DispatchEvent(*event, err);
+  return err.StealNSResult();
+}
+
+//-------------------------------------------------------
+// Tells the HTMLFrame/CanvasFrame that is now has focus
+void nsGlobalWindowInner::UpdateCanvasFocus(bool aFocusChanged,
+                                            nsIContent* aNewContent) {
+  // this is called from the inner window so use GetDocShell
+  nsIDocShell* docShell = GetDocShell();
+  if (!docShell) return;
+
+  bool editable;
+  docShell->GetEditable(&editable);
+  if (editable) return;
+
+  PresShell* presShell = docShell->GetPresShell();
+  if (!presShell || !mDoc) {
+    return;
+  }
+
+  Element* rootElement = mDoc->GetRootElement();
+  if (rootElement) {
+    if ((mHasFocus || aFocusChanged) &&
+        (mFocusedElement == rootElement || aNewContent == rootElement)) {
+      nsCanvasFrame* canvasFrame = presShell->GetCanvasFrame();
+      if (canvasFrame) {
+        canvasFrame->SetHasFocus(mHasFocus && rootElement == aNewContent);
+      }
+    }
+  } else {
+    // XXXbz I would expect that there is never a canvasFrame in this case...
+    nsCanvasFrame* canvasFrame = presShell->GetCanvasFrame();
+    if (canvasFrame) {
+      canvasFrame->SetHasFocus(false);
+    }
+  }
+}
+
+already_AddRefed<nsICSSDeclaration> nsGlobalWindowInner::GetComputedStyle(
+    Element& aElt, const nsAString& aPseudoElt, ErrorResult& aError) {
+  return GetComputedStyleHelper(aElt, aPseudoElt, false, aError);
+}
+
+already_AddRefed<nsICSSDeclaration>
+nsGlobalWindowInner::GetDefaultComputedStyle(Element& aElt,
+                                             const nsAString& aPseudoElt,
+                                             ErrorResult& aError) {
+  return GetComputedStyleHelper(aElt, aPseudoElt, true, aError);
+}
+
+already_AddRefed<nsICSSDeclaration> nsGlobalWindowInner::GetComputedStyleHelper(
+    Element& aElt, const nsAString& aPseudoElt, bool aDefaultStylesOnly,
+    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetComputedStyleHelperOuter,
+                            (aElt, aPseudoElt, aDefaultStylesOnly, aError),
+                            aError, nullptr);
+}
+
+Storage* nsGlobalWindowInner::GetSessionStorage(ErrorResult& aError) {
+  nsIPrincipal* principal = GetPrincipal();
+  nsIPrincipal* storagePrincipal;
+  if (StaticPrefs::
+          privacy_partition_always_partition_third_party_non_cookie_storage_exempt_sessionstorage()) {
+    storagePrincipal = GetEffectiveCookiePrincipal();
+  } else {
+    storagePrincipal = GetEffectiveStoragePrincipal();
+  }
+  BrowsingContext* browsingContext = GetBrowsingContext();
+
+  if (!principal || !storagePrincipal || !browsingContext ||
+      !Storage::StoragePrefIsEnabled()) {
+    return nullptr;
+  }
+
+  if (mSessionStorage) {
+    MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+            ("nsGlobalWindowInner %p has %p sessionStorage", this,
+             mSessionStorage.get()));
+    bool canAccess =
+        principal->Subsumes(mSessionStorage->Principal()) &&
+        storagePrincipal->Subsumes(mSessionStorage->StoragePrincipal());
+    if (!canAccess) {
+      mSessionStorage = nullptr;
+    }
+  }
+
+  if (!mSessionStorage) {
+    nsString documentURI;
+    if (mDoc) {
+      aError = mDoc->GetDocumentURI(documentURI);
+      if (NS_WARN_IF(aError.Failed())) {
+        return nullptr;
+      }
+    }
+
+    if (!mDoc) {
+      aError.Throw(NS_ERROR_FAILURE);
+      return nullptr;
+    }
+
+    // If the document's sandboxed origin flag is set, then accessing
+    // sessionStorage is prohibited.
+    if (mDoc->GetSandboxFlags() & SANDBOXED_ORIGIN) {
+      aError.ThrowSecurityError(
+          "Forbidden in a sandboxed document without the 'allow-same-origin' "
+          "flag.");
+      return nullptr;
+    }
+
+    uint32_t rejectedReason = 0;
+    StorageAccess access = StorageAllowedForWindow(this, &rejectedReason);
+
+    // SessionStorage is an ephemeral per-tab per-origin storage that only lives
+    // as long as the tab is open, although it may survive browser restarts
+    // thanks to the session store. So we interpret storage access differently
+    // than we would for persistent per-origin storage like LocalStorage and so
+    // it may be okay to provide SessionStorage even when we receive a value of
+    // eDeny.
+    //
+    // ContentBlocking::ShouldAllowAccessFor will return false for 3 main
+    // reasons.
+    //
+    // 1. Cookies are entirely blocked due to a per-origin permission
+    // (nsICookiePermission::ACCESS_DENY for the top-level principal or this
+    // window's principal) or the very broad BEHAVIOR_REJECT. This will return
+    // eDeny with a reason of STATE_COOKIES_BLOCKED_BY_PERMISSION or
+    // STATE_COOKIES_BLOCKED_ALL.
+    //
+    // 2. Third-party cookies are limited via BEHAVIOR_REJECT_FOREIGN and
+    // BEHAVIOR_LIMIT_FOREIGN and this is a third-party window. This will return
+    // eDeny with a reason of STATE_COOKIES_BLOCKED_FOREIGN.
+    //
+    // 3. Tracking protection (BEHAVIOR_REJECT_TRACKER and
+    // BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN) is in effect and
+    // IsThirdPartyTrackingResourceWindow() returned true and there wasn't a
+    // permission that allows it. This will return ePartitionTrackersOrDeny with
+    // a reason of STATE_COOKIES_BLOCKED_TRACKER or
+    // STATE_COOKIES_BLOCKED_SOCIALTRACKER.
+    //
+    // In the 1st case, the user has explicitly indicated that they don't want
+    // to allow any storage to the origin or all origins and so we throw an
+    // error and deny access to SessionStorage. In the 2nd case, a legacy
+    // decision reasoned that there's no harm in providing SessionStorage
+    // because the information is not durable and cannot escape the current tab.
+    // The rationale is similar for the 3rd case.
+    if (access == StorageAccess::eDeny &&
+        rejectedReason !=
+            nsIWebProgressListener::STATE_COOKIES_BLOCKED_FOREIGN) {
+      aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+      return nullptr;
+    }
+
+    const RefPtr<SessionStorageManager> storageManager =
+        browsingContext->GetSessionStorageManager();
+    if (!storageManager) {
+      aError.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
+      return nullptr;
+    }
+
+    RefPtr<Storage> storage;
+    aError = storageManager->CreateStorage(this, principal, storagePrincipal,
+                                           documentURI, IsPrivateBrowsing(),
+                                           getter_AddRefs(storage));
+    if (aError.Failed()) {
+      return nullptr;
+    }
+
+    mSessionStorage = storage;
+    MOZ_ASSERT(mSessionStorage);
+
+    MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+            ("nsGlobalWindowInner %p tried to get a new sessionStorage %p",
+             this, mSessionStorage.get()));
+
+    if (!mSessionStorage) {
+      aError.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
+      return nullptr;
+    }
+  }
+
+  MOZ_LOG(gDOMLeakPRLogInner, LogLevel::Debug,
+          ("nsGlobalWindowInner %p returns %p sessionStorage", this,
+           mSessionStorage.get()));
+
+  return mSessionStorage;
+}
+
+Storage* nsGlobalWindowInner::GetLocalStorage(ErrorResult& aError) {
+  if (!Storage::StoragePrefIsEnabled()) {
+    return nullptr;
+  }
+
+  // If the document's sandboxed origin flag is set, then accessing localStorage
+  // is prohibited.
+  if (mDoc && mDoc->GetSandboxFlags() & SANDBOXED_ORIGIN) {
+    aError.ThrowSecurityError(
+        "Forbidden in a sandboxed document without the 'allow-same-origin' "
+        "flag.");
+    return nullptr;
+  }
+
+  // LocalStorage needs to be exposed in every context except for sandboxes and
+  // NullPrincipals (data: URLs, for instance). But we need to keep data
+  // separate in some scenarios: private-browsing and partitioned trackers.
+  // In private-browsing, LocalStorage keeps data in memory, and it shares
+  // StorageEvents just with other origins in the same private-browsing
+  // environment.
+  // For Partitioned Trackers, we expose a partitioned LocalStorage, which
+  // doesn't share data with other contexts, and it's just in memory.
+  // Partitioned localStorage is available only for trackers listed in the
+  // privacy.restrict3rdpartystorage.partitionedHosts pref. See
+  // nsContentUtils::IsURIInPrefList to know the syntax for the pref value.
+  // This is a temporary web-compatibility hack.
+
+  StorageAccess access = StorageAllowedForWindow(this);
+
+  // We allow partitioned localStorage only to some hosts.
+  bool isolated = false;
+  if (ShouldPartitionStorage(access)) {
+    if (!mDoc) {
+      access = StorageAccess::eDeny;
+    } else if (!StoragePartitioningEnabled(access, mDoc->CookieJarSettings())) {
+      static const char* kPrefName =
+          "privacy.restrict3rdpartystorage.partitionedHosts";
+
+      bool isInList = false;
+      mDoc->NodePrincipal()->IsURIInPrefList(kPrefName, &isInList);
+      if (!isInList) {
+        access = StorageAccess::eDeny;
+      } else {
+        isolated = true;
+      }
+    }
+  }
+
+  if (access == StorageAccess::eDeny) {
+    aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return nullptr;
+  }
+
+  nsCOMPtr<nsICookieJarSettings> cookieJarSettings;
+  if (mDoc) {
+    cookieJarSettings = mDoc->CookieJarSettings();
+  } else {
+    cookieJarSettings = net::CookieJarSettings::GetBlockingAll(
+        ShouldResistFingerprinting(RFPTarget::IsAlwaysEnabledForPrecompute));
+  }
+
+  // Note that this behavior is observable: if we grant storage permission to a
+  // tracker, we pass from the partitioned LocalStorage (or a partitioned cookie
+  // jar) to the 'normal' one. The previous data is lost and the 2
+  // window.localStorage objects, before and after the permission granted, will
+  // be different.
+  if (mLocalStorage) {
+    if ((mLocalStorage->Type() == (isolated ? Storage::ePartitionedLocalStorage
+                                            : Storage::eLocalStorage)) &&
+        (mLocalStorage->StoragePrincipal() == GetEffectiveStoragePrincipal())) {
+      return mLocalStorage;
+    }
+
+    // storage needs change
+    mLocalStorage = nullptr;
+  }
+
+  MOZ_ASSERT(!mLocalStorage);
+
+  if (!isolated) {
+    RefPtr<Storage> storage;
+
+    if (NextGenLocalStorageEnabled()) {
+      aError = LSObject::CreateForWindow(this, getter_AddRefs(storage));
+    } else {
+      nsresult rv;
+      nsCOMPtr<nsIDOMStorageManager> storageManager =
+          do_GetService("@mozilla.org/dom/localStorage-manager;1", &rv);
+      if (NS_FAILED(rv)) {
+        aError.Throw(rv);
+        return nullptr;
+      }
+
+      nsString documentURI;
+      if (mDoc) {
+        aError = mDoc->GetDocumentURI(documentURI);
+        if (NS_WARN_IF(aError.Failed())) {
+          return nullptr;
+        }
+      }
+
+      nsIPrincipal* principal = GetPrincipal();
+      if (!principal) {
+        aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+        return nullptr;
+      }
+
+      nsIPrincipal* storagePrincipal = GetEffectiveStoragePrincipal();
+      if (!storagePrincipal) {
+        aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+        return nullptr;
+      }
+
+      aError = storageManager->CreateStorage(this, principal, storagePrincipal,
+                                             documentURI, IsPrivateBrowsing(),
+                                             getter_AddRefs(storage));
+    }
+
+    if (aError.Failed()) {
+      return nullptr;
+    }
+
+    mLocalStorage = storage;
+  } else {
+    nsresult rv;
+    nsCOMPtr<nsIDOMSessionStorageManager> storageManager =
+        do_GetService("@mozilla.org/dom/sessionStorage-manager;1", &rv);
+    if (NS_FAILED(rv)) {
+      aError.Throw(rv);
+      return nullptr;
+    }
+
+    nsIPrincipal* principal = GetPrincipal();
+    if (!principal) {
+      aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+      return nullptr;
+    }
+
+    nsIPrincipal* storagePrincipal = GetEffectiveStoragePrincipal();
+    if (!storagePrincipal) {
+      aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
+      return nullptr;
+    }
+
+    RefPtr<SessionStorageCache> cache;
+    if (isolated) {
+      cache = new SessionStorageCache();
+    } else {
+      // This will clone the session storage if it exists.
+      rv = storageManager->GetSessionStorageCache(principal, storagePrincipal,
+                                                  &cache);
+      if (NS_FAILED(rv)) {
+        aError.Throw(rv);
+        return nullptr;
+      }
+    }
+
+    mLocalStorage =
+        new PartitionedLocalStorage(this, principal, storagePrincipal, cache);
+  }
+
+  MOZ_ASSERT(mLocalStorage);
+  MOZ_ASSERT(
+      mLocalStorage->Type() ==
+      (isolated ? Storage::ePartitionedLocalStorage : Storage::eLocalStorage));
+  return mLocalStorage;
+}
+
+IDBFactory* nsGlobalWindowInner::GetIndexedDB(JSContext* aCx,
+                                              ErrorResult& aError) {
+  if (!mIndexedDB) {
+    // This may keep mIndexedDB null without setting an error.
+    auto res = IDBFactory::CreateForWindow(this);
+    if (res.isErr()) {
+      aError = res.unwrapErr();
+    } else {
+      mIndexedDB = res.unwrap();
+    }
+  }
+
+  return mIndexedDB;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner::nsIInterfaceRequestor
+//*****************************************************************************
+
+NS_IMETHODIMP
+nsGlobalWindowInner::GetInterface(const nsIID& aIID, void** aSink) {
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  NS_ENSURE_TRUE(outer, NS_ERROR_NOT_INITIALIZED);
+
+  nsresult rv = outer->GetInterfaceInternal(aIID, aSink);
+  if (rv == NS_ERROR_NO_INTERFACE) {
+    return QueryInterface(aIID, aSink);
+  }
+  return rv;
+}
+
+void nsGlobalWindowInner::GetInterface(JSContext* aCx,
+                                       JS::Handle<JS::Value> aIID,
+                                       JS::MutableHandle<JS::Value> aRetval,
+                                       ErrorResult& aError) {
+  dom::GetInterface(aCx, this, aIID, aRetval, aError);
+}
+
+already_AddRefed<CacheStorage> nsGlobalWindowInner::GetCaches(
+    ErrorResult& aRv) {
+  if (!mCacheStorage) {
+    bool forceTrustedOrigin =
+        GetBrowsingContext() &&
+        GetBrowsingContext()->Top()->GetServiceWorkersTestingEnabled();
+    mCacheStorage = CacheStorage::CreateOnMainThread(
+        cache::DEFAULT_NAMESPACE, this, GetEffectiveStoragePrincipal(),
+        forceTrustedOrigin, aRv);
+  }
+
+  RefPtr<CacheStorage> ref = mCacheStorage;
+  return ref.forget();
+}
+
+void nsGlobalWindowInner::FireOfflineStatusEventIfChanged() {
+  if (!IsCurrentInnerWindow()) return;
+
+  // Don't fire an event if the status hasn't changed
+  if (mWasOffline == NS_IsOffline()) {
+    return;
+  }
+
+  mWasOffline = !mWasOffline;
+
+  nsAutoString name;
+  if (mWasOffline) {
+    name.AssignLiteral("offline");
+  } else {
+    name.AssignLiteral("online");
+  }
+  nsContentUtils::DispatchTrustedEvent(mDoc, this, name, CanBubble::eNo,
+                                       Cancelable::eNo);
+}
+
+nsGlobalWindowInner::SlowScriptResponse
+nsGlobalWindowInner::ShowSlowScriptDialog(JSContext* aCx,
+                                          const nsString& aAddonId,
+                                          const double aDuration) {
+  nsresult rv;
+
+  if (Preferences::GetBool("dom.always_stop_slow_scripts")) {
+    return KillSlowScript;
+  }
+
+  // If it isn't safe to run script, then it isn't safe to bring up the prompt
+  // (since that spins the event loop). In that (rare) case, we just kill the
+  // script and report a warning.
+  if (!nsContentUtils::IsSafeToRunScript()) {
+    JS::WarnASCII(aCx, "A long running script was terminated");
+    return KillSlowScript;
+  }
+
+  // If our document is not active, just kill the script: we've been unloaded
+  if (!HasActiveDocument()) {
+    return KillSlowScript;
+  }
+
+  // Check if we should offer the option to debug
+  JS::AutoFilename filename;
+  uint32_t lineno;
+  // Computing the line number can be very expensive (see bug 1330231 for
+  // example), and we don't use the line number anywhere except than in the
+  // parent process, so we avoid computing it elsewhere.  This gives us most of
+  // the wins we are interested in, since the source of the slowness here is
+  // minified scripts which is more common in Web content that is loaded in the
+  // content process.
+  uint32_t* linenop = XRE_IsParentProcess() ? &lineno : nullptr;
+  bool hasFrame = JS::DescribeScriptedCaller(aCx, &filename, linenop);
+
+  // Record the slow script event if we haven't done so already for this inner
+  // window (which represents a particular page to the user).
+  if (!mHasHadSlowScript) {
+    Telemetry::Accumulate(Telemetry::SLOW_SCRIPT_PAGE_COUNT, 1);
+  }
+  mHasHadSlowScript = true;
+
+  // Override the cursor to something that we're sure the user can see.
+  SetCursor("auto"_ns, IgnoreErrors());
+
+  if (XRE_IsContentProcess() && ProcessHangMonitor::Get()) {
+    ProcessHangMonitor::SlowScriptAction action;
+    RefPtr<ProcessHangMonitor> monitor = ProcessHangMonitor::Get();
+    nsIDocShell* docShell = GetDocShell();
+    nsCOMPtr<nsIBrowserChild> child =
+        docShell ? docShell->GetBrowserChild() : nullptr;
+    action =
+        monitor->NotifySlowScript(child, filename.get(), aAddonId, aDuration);
+    if (action == ProcessHangMonitor::Terminate) {
+      return KillSlowScript;
+    }
+
+    if (action == ProcessHangMonitor::StartDebugger) {
+      // Spin a nested event loop so that the debugger in the parent can fetch
+      // any information it needs. Once the debugger has started, return to the
+      // script.
+      RefPtr<nsGlobalWindowOuter> outer = GetOuterWindowInternal();
+      outer->EnterModalState();
+      SpinEventLoopUntil("nsGlobalWindowInner::ShowSlowScriptDialog"_ns, [&]() {
+        return monitor->IsDebuggerStartupComplete();
+      });
+      outer->LeaveModalState();
+      return ContinueSlowScript;
+    }
+
+    return ContinueSlowScriptAndKeepNotifying;
+  }
+
+  // Reached only on non-e10s - once per slow script dialog.
+  // On e10s - we probe once at ProcessHangsMonitor.jsm
+  Telemetry::Accumulate(Telemetry::SLOW_SCRIPT_NOTICE_COUNT, 1);
+
+  // Get the nsIPrompt interface from the docshell
+  nsCOMPtr<nsIDocShell> ds = GetDocShell();
+  NS_ENSURE_TRUE(ds, KillSlowScript);
+  nsCOMPtr<nsIPrompt> prompt = do_GetInterface(ds);
+  NS_ENSURE_TRUE(prompt, KillSlowScript);
+
+  // Prioritize the SlowScriptDebug interface over JSD1.
+  nsCOMPtr<nsISlowScriptDebugCallback> debugCallback;
+
+  if (hasFrame) {
+    const char* debugCID = "@mozilla.org/dom/slow-script-debug;1";
+    nsCOMPtr<nsISlowScriptDebug> debugService = do_GetService(debugCID, &rv);
+    if (NS_SUCCEEDED(rv)) {
+      debugService->GetActivationHandler(getter_AddRefs(debugCallback));
+    }
+  }
+
+  bool failed = false;
+  auto getString = [&](const char* name,
+                       nsContentUtils::PropertiesFile propFile =
+                           nsContentUtils::eDOM_PROPERTIES) {
+    nsAutoString result;
+    nsresult rv = nsContentUtils::GetLocalizedString(propFile, name, result);
+
+    // GetStringFromName can return NS_OK and still give nullptr string
+    failed = failed || NS_FAILED(rv) || result.IsEmpty();
+    return result;
+  };
+
+  bool isAddonScript = !aAddonId.IsEmpty();
+  bool showDebugButton = debugCallback && !isAddonScript;
+
+  // Get localizable strings
+
+  nsAutoString title, checkboxMsg, debugButton, msg;
+  if (isAddonScript) {
+    title = getString("KillAddonScriptTitle");
+    checkboxMsg = getString("KillAddonScriptGlobalMessage");
+
+    auto appName =
+        getString("brandShortName", nsContentUtils::eBRAND_PROPERTIES);
+
+    nsCOMPtr<nsIAddonPolicyService> aps =
+        do_GetService("@mozilla.org/addons/policy-service;1");
+    nsString addonName;
+    if (!aps || NS_FAILED(aps->GetExtensionName(aAddonId, addonName))) {
+      addonName = aAddonId;
+    }
+
+    rv = nsContentUtils::FormatLocalizedString(
+        msg, nsContentUtils::eDOM_PROPERTIES, "KillAddonScriptMessage",
+        addonName, appName);
+
+    failed = failed || NS_FAILED(rv);
+  } else {
+    title = getString("KillScriptTitle");
+    checkboxMsg = getString("DontAskAgain");
+
+    if (showDebugButton) {
+      debugButton = getString("DebugScriptButton");
+      msg = getString("KillScriptWithDebugMessage");
+    } else {
+      msg = getString("KillScriptMessage");
+    }
+  }
+
+  auto stopButton = getString("StopScriptButton");
+  auto waitButton = getString("WaitForScriptButton");
+
+  if (failed) {
+    NS_ERROR("Failed to get localized strings.");
+    return ContinueSlowScript;
+  }
+
+  // Append file and line number information, if available
+  if (filename.get()) {
+    nsAutoString scriptLocation;
+    // We want to drop the middle part of too-long locations.  We'll
+    // define "too-long" as longer than 60 UTF-16 code units.  Just
+    // have to be a bit careful about unpaired surrogates.
+    NS_ConvertUTF8toUTF16 filenameUTF16(filename.get());
+    if (filenameUTF16.Length() > 60) {
+      // XXXbz Do we need to insert any bidi overrides here?
+      size_t cutStart = 30;
+      size_t cutLength = filenameUTF16.Length() - 60;
+      MOZ_ASSERT(cutLength > 0);
+      if (NS_IS_LOW_SURROGATE(filenameUTF16[cutStart])) {
+        // Don't truncate before the low surrogate, in case it's preceded by a
+        // high surrogate and forms a single Unicode character.  Instead, just
+        // include the low surrogate.
+        ++cutStart;
+        --cutLength;
+      }
+      if (NS_IS_LOW_SURROGATE(filenameUTF16[cutStart + cutLength])) {
+        // Likewise, don't drop a trailing low surrogate here.  We want to
+        // increase cutLength, since it might be 0 already so we can't very well
+        // decrease it.
+        ++cutLength;
+      }
+
+      // Insert U+2026 HORIZONTAL ELLIPSIS
+      filenameUTF16.ReplaceLiteral(cutStart, cutLength, u"\x2026");
+    }
+    rv = nsContentUtils::FormatLocalizedString(
+        scriptLocation, nsContentUtils::eDOM_PROPERTIES, "KillScriptLocation",
+        filenameUTF16);
+
+    if (NS_SUCCEEDED(rv)) {
+      msg.AppendLiteral("\n\n");
+      msg.Append(scriptLocation);
+      msg.Append(':');
+      msg.AppendInt(lineno);
+    }
+  }
+
+  uint32_t buttonFlags = nsIPrompt::BUTTON_POS_1_DEFAULT +
+                         (nsIPrompt::BUTTON_TITLE_IS_STRING *
+                          (nsIPrompt::BUTTON_POS_0 + nsIPrompt::BUTTON_POS_1));
+
+  // Add a third button if necessary.
+  if (showDebugButton)
+    buttonFlags += nsIPrompt::BUTTON_TITLE_IS_STRING * nsIPrompt::BUTTON_POS_2;
+
+  bool checkboxValue = false;
+  int32_t buttonPressed = 0;  // In case the user exits dialog by clicking X.
+  {
+    // Null out the operation callback while we're re-entering JS here.
+    AutoDisableJSInterruptCallback disabler(aCx);
+
+    // Open the dialog.
+    rv = prompt->ConfirmEx(
+        title.get(), msg.get(), buttonFlags, waitButton.get(), stopButton.get(),
+        debugButton.get(), checkboxMsg.get(), &checkboxValue, &buttonPressed);
+  }
+
+  if (buttonPressed == 0) {
+    if (checkboxValue && !isAddonScript && NS_SUCCEEDED(rv))
+      return AlwaysContinueSlowScript;
+    return ContinueSlowScript;
+  }
+
+  if (buttonPressed == 2) {
+    MOZ_RELEASE_ASSERT(debugCallback);
+
+    rv = debugCallback->HandleSlowScriptDebug(this);
+    return NS_SUCCEEDED(rv) ? ContinueSlowScript : KillSlowScript;
+  }
+
+  JS_ClearPendingException(aCx);
+
+  return KillSlowScript;
+}
+
+nsresult nsGlobalWindowInner::Observe(nsISupports* aSubject, const char* aTopic,
+                                      const char16_t* aData) {
+  if (!nsCRT::strcmp(aTopic, NS_IOSERVICE_OFFLINE_STATUS_TOPIC)) {
+    if (!IsFrozen()) {
+      // Fires an offline status event if the offline status has changed
+      FireOfflineStatusEventIfChanged();
+    }
+    return NS_OK;
+  }
+
+  if (!nsCRT::strcmp(aTopic, MEMORY_PRESSURE_OBSERVER_TOPIC)) {
+    if (mPerformance) {
+      mPerformance->MemoryPressure();
+    }
+    RemoveReportRecords();
+    return NS_OK;
+  }
+
+  if (!nsCRT::strcmp(aTopic, PERMISSION_CHANGED_TOPIC)) {
+    nsCOMPtr<nsIPermission> perm(do_QueryInterface(aSubject));
+    if (!perm) {
+      // A null permission indicates that the entire permission list
+      // was cleared.
+      MOZ_ASSERT(!nsCRT::strcmp(aData, u"cleared"));
+      UpdatePermissions();
+      return NS_OK;
+    }
+
+    nsAutoCString type;
+    perm->GetType(type);
+    if (type == "autoplay-media"_ns) {
+      UpdateAutoplayPermission();
+    } else if (type == "shortcuts"_ns) {
+      UpdateShortcutsPermission();
+    } else if (type == "popup"_ns) {
+      UpdatePopupPermission();
+    }
+
+    if (!mDoc) {
+      return NS_OK;
+    }
+
+    RefPtr<PermissionDelegateHandler> permDelegateHandler =
+        mDoc->GetPermissionDelegateHandler();
+
+    if (permDelegateHandler) {
+      permDelegateHandler->UpdateDelegatedPermission(type);
+    }
+
+    return NS_OK;
+  }
+
+  if (!nsCRT::strcmp(aTopic, "screen-information-changed")) {
+    if (mScreen) {
+      if (RefPtr<ScreenOrientation> orientation =
+              mScreen->GetOrientationIfExists()) {
+        orientation->MaybeChanged();
+      }
+    }
+    if (mHasOrientationChangeListeners) {
+      int32_t oldAngle = mOrientationAngle;
+      mOrientationAngle = Orientation(CallerType::System);
+      if (mOrientationAngle != oldAngle && IsCurrentInnerWindow()) {
+        nsCOMPtr<nsPIDOMWindowOuter> outer = GetOuterWindow();
+        outer->DispatchCustomEvent(u"orientationchange"_ns);
+      }
+    }
+    return NS_OK;
+  }
+
+  if (!nsCRT::strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
+    MOZ_ASSERT(!NS_strcmp(aData, u"intl.accept_languages"));
+
+    // The user preferred languages have changed, we need to fire an event on
+    // Window object and invalidate the cache for navigator.languages. It is
+    // done for every change which can be a waste of cycles but those should be
+    // fairly rare.
+    // We MUST invalidate navigator.languages before sending the event in the
+    // very likely situation where an event handler will try to read its value.
+
+    if (mNavigator) {
+      Navigator_Binding::ClearCachedLanguageValue(mNavigator);
+      Navigator_Binding::ClearCachedLanguagesValue(mNavigator);
+    }
+
+    // The event has to be dispatched only to the current inner window.
+    if (!IsCurrentInnerWindow()) {
+      return NS_OK;
+    }
+
+    RefPtr<Event> event = NS_NewDOMEvent(this, nullptr, nullptr);
+    event->InitEvent(u"languagechange"_ns, false, false);
+    event->SetTrusted(true);
+
+    ErrorResult rv;
+    DispatchEvent(*event, rv);
+    return rv.StealNSResult();
+  }
+
+  NS_WARNING("unrecognized topic in nsGlobalWindowInner::Observe");
+  return NS_ERROR_FAILURE;
+}
+
+void nsGlobalWindowInner::ObserveStorageNotification(
+    StorageEvent* aEvent, const char16_t* aStorageType, bool aPrivateBrowsing) {
+  MOZ_ASSERT(aEvent);
+
+  // The private browsing check must be done here again because this window
+  // could have changed its state before the notification check and now. This
+  // happens in case this window did have a docShell at that time.
+  if (aPrivateBrowsing != IsPrivateBrowsing()) {
+    return;
+  }
+
+  // LocalStorage can only exist on an inner window, and we don't want to
+  // generate events on frozen or otherwise-navigated-away from windows.
+  // (Actually, this code used to try and buffer events for frozen windows,
+  // but it never worked, so we've removed it.  See bug 1285898.)
+  if (!IsCurrentInnerWindow() || IsFrozen()) {
+    return;
+  }
+
+  nsIPrincipal* principal = GetPrincipal();
+  if (!principal) {
+    return;
+  }
+
+  bool fireMozStorageChanged = false;
+  nsAutoString eventType;
+  eventType.AssignLiteral("storage");
+
+  if (!NS_strcmp(aStorageType, u"sessionStorage")) {
+    RefPtr<Storage> changingStorage = aEvent->GetStorageArea();
+    MOZ_ASSERT(changingStorage);
+
+    bool check = false;
+
+    if (const RefPtr<SessionStorageManager> storageManager =
+            GetBrowsingContext()->GetSessionStorageManager()) {
+      nsresult rv = storageManager->CheckStorage(GetEffectiveStoragePrincipal(),
+                                                 changingStorage, &check);
+      if (NS_FAILED(rv)) {
+        return;
+      }
+    }
+
+    if (!check) {
+      // This storage event is not coming from our storage or is coming
+      // from a different docshell, i.e. it is a clone, ignore this event.
+      return;
+    }
+
+    MOZ_LOG(
+        gDOMLeakPRLogInner, LogLevel::Debug,
+        ("nsGlobalWindowInner %p with sessionStorage %p passing event from %p",
+         this, mSessionStorage.get(), changingStorage.get()));
+
+    fireMozStorageChanged = mSessionStorage == changingStorage;
+    if (fireMozStorageChanged) {
+      eventType.AssignLiteral("MozSessionStorageChanged");
+    }
+  }
+
+  else {
+    MOZ_ASSERT(!NS_strcmp(aStorageType, u"localStorage"));
+
+    nsIPrincipal* storagePrincipal = GetEffectiveStoragePrincipal();
+    if (!storagePrincipal) {
+      return;
+    }
+
+    MOZ_DIAGNOSTIC_ASSERT(StorageUtils::PrincipalsEqual(aEvent->GetPrincipal(),
+                                                        storagePrincipal));
+
+    fireMozStorageChanged =
+        mLocalStorage && mLocalStorage == aEvent->GetStorageArea();
+
+    if (fireMozStorageChanged) {
+      eventType.AssignLiteral("MozLocalStorageChanged");
+    }
+  }
+
+  // Clone the storage event included in the observer notification. We want
+  // to dispatch clones rather than the original event.
+  IgnoredErrorResult error;
+  RefPtr<StorageEvent> clonedEvent =
+      CloneStorageEvent(eventType, aEvent, error);
+  if (error.Failed() || !clonedEvent) {
+    return;
+  }
+
+  clonedEvent->SetTrusted(true);
+
+  if (fireMozStorageChanged) {
+    WidgetEvent* internalEvent = clonedEvent->WidgetEventPtr();
+    internalEvent->mFlags.mOnlyChromeDispatch = true;
+  }
+
+  DispatchEvent(*clonedEvent);
+}
+
+already_AddRefed<StorageEvent> nsGlobalWindowInner::CloneStorageEvent(
+    const nsAString& aType, const RefPtr<StorageEvent>& aEvent,
+    ErrorResult& aRv) {
+  StorageEventInit dict;
+
+  dict.mBubbles = aEvent->Bubbles();
+  dict.mCancelable = aEvent->Cancelable();
+  aEvent->GetKey(dict.mKey);
+  aEvent->GetOldValue(dict.mOldValue);
+  aEvent->GetNewValue(dict.mNewValue);
+  aEvent->GetUrl(dict.mUrl);
+
+  RefPtr<Storage> storageArea = aEvent->GetStorageArea();
+
+  RefPtr<Storage> storage;
+
+  // If null, this is a localStorage event received by IPC.
+  if (!storageArea) {
+    storage = GetLocalStorage(aRv);
+    if (!NextGenLocalStorageEnabled()) {
+      if (aRv.Failed() || !storage) {
+        return nullptr;
+      }
+
+      if (storage->Type() == Storage::eLocalStorage) {
+        RefPtr<LocalStorage> localStorage =
+            static_cast<LocalStorage*>(storage.get());
+
+        // We must apply the current change to the 'local' localStorage.
+        localStorage->ApplyEvent(aEvent);
+      }
+    }
+  } else if (storageArea->Type() == Storage::eSessionStorage) {
+    storage = GetSessionStorage(aRv);
+  } else {
+    MOZ_ASSERT(storageArea->Type() == Storage::eLocalStorage);
+    storage = GetLocalStorage(aRv);
+  }
+
+  if (aRv.Failed() || !storage) {
+    return nullptr;
+  }
+
+  if (storage->Type() == Storage::ePartitionedLocalStorage) {
+    // This error message is not exposed.
+    aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return nullptr;
+  }
+
+  MOZ_ASSERT(storage);
+  MOZ_ASSERT_IF(storageArea, storage->IsForkOf(storageArea));
+
+  dict.mStorageArea = storage;
+
+  RefPtr<StorageEvent> event = StorageEvent::Constructor(this, aType, dict);
+  return event.forget();
+}
+
+void nsGlobalWindowInner::Suspend(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  // We can only safely suspend windows that are the current inner window.  If
+  // its not the current inner, then we are in one of two different cases.
+  // Either we are in the bfcache or we are doomed window that is going away.
+  // When a window becomes inactive we purposely avoid placing already suspended
+  // windows into the bfcache.  It only expects windows suspended due to the
+  // Freeze() method which occurs while the window is still the current inner.
+  // So we must not call Suspend() on bfcache windows at this point or this
+  // invariant will be broken.  If the window is doomed there is no point in
+  // suspending it since it will soon be gone.
+  if (!IsCurrentInnerWindow()) {
+    return;
+  }
+
+  // All in-process descendants are also suspended.  This ensure mSuspendDepth
+  // is set properly and the timers are properly canceled for each in-process
+  // descendant.
+  if (aIncludeSubWindows) {
+    CallOnInProcessDescendants(&nsGlobalWindowInner::Suspend, false);
+  }
+
+  mSuspendDepth += 1;
+  if (mSuspendDepth != 1) {
+    return;
+  }
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->BlockBFCacheFor(BFCacheStatus::SUSPENDED);
+  }
+
+  nsCOMPtr<nsIDeviceSensors> ac = do_GetService(NS_DEVICE_SENSORS_CONTRACTID);
+  if (ac) {
+    for (uint32_t i = 0; i < mEnabledSensors.Length(); i++)
+      ac->RemoveWindowListener(mEnabledSensors[i], this);
+  }
+  DisableGamepadUpdates();
+  DisableVRUpdates();
+
+  SuspendWorkersForWindow(*this);
+
+  for (RefPtr<mozilla::dom::SharedWorker> pinnedWorker :
+       mSharedWorkers.ForwardRange()) {
+    pinnedWorker->Suspend();
+  }
+
+  SuspendIdleRequests();
+
+  mTimeoutManager->Suspend();
+
+  // Suspend all of the AudioContexts for this window
+  for (uint32_t i = 0; i < mAudioContexts.Length(); ++i) {
+    mAudioContexts[i]->SuspendFromChrome();
+  }
+}
+
+void nsGlobalWindowInner::Resume(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  // We can only safely resume a window if its the current inner window.  If
+  // its not the current inner, then we are in one of two different cases.
+  // Either we are in the bfcache or we are doomed window that is going away.
+  // If a window is suspended when it becomes inactive we purposely do not
+  // put it in the bfcache, so Resume should never be needed in that case.
+  // If the window is doomed then there is no point in resuming it.
+  if (!IsCurrentInnerWindow()) {
+    return;
+  }
+
+  // Resume all in-process descendants.  This restores timers recursively
+  // canceled in Suspend() and ensures all in-process descendants have the
+  // correct mSuspendDepth.
+  if (aIncludeSubWindows) {
+    CallOnInProcessDescendants(&nsGlobalWindowInner::Resume, false);
+  }
+
+  if (mSuspendDepth == 0) {
+    // Ignore if the window is not suspended.
+    return;
+  }
+
+  mSuspendDepth -= 1;
+
+  if (mSuspendDepth != 0) {
+    return;
+  }
+
+  // We should not be able to resume a frozen window.  It must be Thaw()'d
+  // first.
+  MOZ_ASSERT(mFreezeDepth == 0);
+
+  nsCOMPtr<nsIDeviceSensors> ac = do_GetService(NS_DEVICE_SENSORS_CONTRACTID);
+  if (ac) {
+    for (uint32_t i = 0; i < mEnabledSensors.Length(); i++)
+      ac->AddWindowListener(mEnabledSensors[i], this);
+  }
+  EnableGamepadUpdates();
+  EnableVRUpdates();
+
+  // Resume all of the AudioContexts for this window
+  for (uint32_t i = 0; i < mAudioContexts.Length(); ++i) {
+    mAudioContexts[i]->ResumeFromChrome();
+  }
+
+  if (RefPtr<MediaDevices> devices = GetExtantMediaDevices()) {
+    devices->WindowResumed();
+  }
+
+  mTimeoutManager->Resume();
+
+  ResumeIdleRequests();
+
+  // Resume all of the workers for this window.  We must do this
+  // after timeouts since workers may have queued events that can trigger
+  // a setTimeout().
+  ResumeWorkersForWindow(*this);
+
+  for (RefPtr<mozilla::dom::SharedWorker> pinnedWorker :
+       mSharedWorkers.ForwardRange()) {
+    pinnedWorker->Resume();
+  }
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->UnblockBFCacheFor(BFCacheStatus::SUSPENDED);
+  }
+}
+
+bool nsGlobalWindowInner::IsSuspended() const {
+  MOZ_ASSERT(NS_IsMainThread());
+  return mSuspendDepth != 0;
+}
+
+void nsGlobalWindowInner::Freeze(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+  Suspend(aIncludeSubWindows);
+  FreezeInternal(aIncludeSubWindows);
+}
+
+void nsGlobalWindowInner::FreezeInternal(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_DIAGNOSTIC_ASSERT(IsCurrentInnerWindow());
+  MOZ_DIAGNOSTIC_ASSERT(IsSuspended());
+
+  HintIsLoading(false);
+
+  if (aIncludeSubWindows) {
+    CallOnInProcessChildren(&nsGlobalWindowInner::FreezeInternal,
+                            aIncludeSubWindows);
+  }
+
+  mFreezeDepth += 1;
+  MOZ_ASSERT(mSuspendDepth >= mFreezeDepth);
+  if (mFreezeDepth != 1) {
+    return;
+  }
+
+  FreezeWorkersForWindow(*this);
+
+  for (RefPtr<mozilla::dom::SharedWorker> pinnedWorker :
+       mSharedWorkers.ForwardRange()) {
+    pinnedWorker->Freeze();
+  }
+
+  mTimeoutManager->Freeze();
+  if (mClientSource) {
+    mClientSource->Freeze();
+  }
+
+  NotifyDOMWindowFrozen(this);
+}
+
+void nsGlobalWindowInner::Thaw(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+  ThawInternal(aIncludeSubWindows);
+  Resume(aIncludeSubWindows);
+}
+
+void nsGlobalWindowInner::ThawInternal(bool aIncludeSubWindows) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_DIAGNOSTIC_ASSERT(IsCurrentInnerWindow());
+  MOZ_DIAGNOSTIC_ASSERT(IsSuspended());
+
+  if (aIncludeSubWindows) {
+    CallOnInProcessChildren(&nsGlobalWindowInner::ThawInternal,
+                            aIncludeSubWindows);
+  }
+
+  MOZ_ASSERT(mFreezeDepth != 0);
+  mFreezeDepth -= 1;
+  MOZ_ASSERT(mSuspendDepth >= mFreezeDepth);
+  if (mFreezeDepth != 0) {
+    return;
+  }
+
+  if (mClientSource) {
+    mClientSource->Thaw();
+  }
+  mTimeoutManager->Thaw();
+
+  ThawWorkersForWindow(*this);
+
+  for (RefPtr<mozilla::dom::SharedWorker> pinnedWorker :
+       mSharedWorkers.ForwardRange()) {
+    pinnedWorker->Thaw();
+  }
+
+  NotifyDOMWindowThawed(this);
+}
+
+bool nsGlobalWindowInner::IsFrozen() const {
+  MOZ_ASSERT(NS_IsMainThread());
+  bool frozen = mFreezeDepth != 0;
+  MOZ_ASSERT_IF(frozen, IsSuspended());
+  return frozen;
+}
+
+void nsGlobalWindowInner::SyncStateFromParentWindow() {
+  // This method should only be called on an inner window that has been
+  // assigned to an outer window already.
+  MOZ_ASSERT(IsCurrentInnerWindow());
+  nsPIDOMWindowOuter* outer = GetOuterWindow();
+  MOZ_ASSERT(outer);
+
+  // Attempt to find our parent windows.
+  nsCOMPtr<Element> frame = outer->GetFrameElementInternal();
+  nsPIDOMWindowOuter* parentOuter =
+      frame ? frame->OwnerDoc()->GetWindow() : nullptr;
+  nsGlobalWindowInner* parentInner =
+      parentOuter
+          ? nsGlobalWindowInner::Cast(parentOuter->GetCurrentInnerWindow())
+          : nullptr;
+
+  // If our outer is in a modal state, but our parent is not in a modal
+  // state, then we must apply the suspend directly.  If our parent is
+  // in a modal state then we should get the suspend automatically
+  // via the parentSuspendDepth application below.
+  if ((!parentInner || !parentInner->IsInModalState()) && IsInModalState()) {
+    Suspend();
+  }
+
+  uint32_t parentFreezeDepth = parentInner ? parentInner->mFreezeDepth : 0;
+  uint32_t parentSuspendDepth = parentInner ? parentInner->mSuspendDepth : 0;
+
+  // Since every Freeze() calls Suspend(), the suspend count must
+  // be equal or greater to the freeze count.
+  MOZ_ASSERT(parentFreezeDepth <= parentSuspendDepth);
+
+  // First apply the Freeze() calls.
+  for (uint32_t i = 0; i < parentFreezeDepth; ++i) {
+    Freeze();
+  }
+
+  // Now apply only the number of Suspend() calls to reach the target
+  // suspend count after applying the Freeze() calls.
+  for (uint32_t i = 0; i < (parentSuspendDepth - parentFreezeDepth); ++i) {
+    Suspend();
+  }
+}
+
+void nsGlobalWindowInner::UpdateBackgroundState() {
+  if (RefPtr<MediaDevices> devices = GetExtantMediaDevices()) {
+    devices->BackgroundStateChanged();
+  }
+  mTimeoutManager->UpdateBackgroundState();
+}
+
+template <typename Method, typename... Args>
+CallState nsGlobalWindowInner::CallOnInProcessDescendantsInternal(
+    BrowsingContext* aBrowsingContext, bool aChildOnly, Method aMethod,
+    Args&&... aArgs) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aBrowsingContext);
+
+  CallState state = CallState::Continue;
+  for (const RefPtr<BrowsingContext>& bc : aBrowsingContext->Children()) {
+    if (nsCOMPtr<nsPIDOMWindowOuter> pWin = bc->GetDOMWindow()) {
+      auto* win = nsGlobalWindowOuter::Cast(pWin);
+      if (nsGlobalWindowInner* inner =
+              nsGlobalWindowInner::Cast(win->GetCurrentInnerWindow())) {
+        // Call the descendant method using our helper CallDescendant() template
+        // method. This allows us to handle both void returning methods and
+        // methods that return CallState explicitly.  For void returning methods
+        // we assume CallState::Continue.
+        using returnType = decltype((inner->*aMethod)(aArgs...));
+        state = CallDescendant<returnType>(inner, aMethod, aArgs...);
+
+        if (state == CallState::Stop) {
+          return state;
+        }
+      }
+    }
+
+    if (!aChildOnly) {
+      state = CallOnInProcessDescendantsInternal(bc.get(), aChildOnly, aMethod,
+                                                 aArgs...);
+      if (state == CallState::Stop) {
+        return state;
+      }
+    }
+  }
+
+  return state;
+}
+
+Maybe<ClientInfo> nsGlobalWindowInner::GetClientInfo() const {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (mDoc && mDoc->IsStaticDocument()) {
+    if (Maybe<ClientInfo> info = mDoc->GetOriginalDocument()->GetClientInfo()) {
+      return info;
+    }
+  }
+
+  Maybe<ClientInfo> clientInfo;
+  if (mClientSource) {
+    clientInfo.emplace(mClientSource->Info());
+  }
+  return clientInfo;
+}
+
+Maybe<ClientState> nsGlobalWindowInner::GetClientState() const {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (mDoc && mDoc->IsStaticDocument()) {
+    if (Maybe<ClientState> state =
+            mDoc->GetOriginalDocument()->GetClientState()) {
+      return state;
+    }
+  }
+
+  Maybe<ClientState> clientState;
+  if (mClientSource) {
+    Result<ClientState, ErrorResult> res = mClientSource->SnapshotState();
+    if (res.isOk()) {
+      clientState.emplace(res.unwrap());
+    } else {
+      res.unwrapErr().SuppressException();
+    }
+  }
+  return clientState;
+}
+
+Maybe<ServiceWorkerDescriptor> nsGlobalWindowInner::GetController() const {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (mDoc && mDoc->IsStaticDocument()) {
+    if (Maybe<ServiceWorkerDescriptor> controller =
+            mDoc->GetOriginalDocument()->GetController()) {
+      return controller;
+    }
+  }
+
+  Maybe<ServiceWorkerDescriptor> controller;
+  if (mClientSource) {
+    controller = mClientSource->GetController();
+  }
+  return controller;
+}
+
+void nsGlobalWindowInner::SetCsp(nsIContentSecurityPolicy* aCsp) {
+  if (!mClientSource) {
+    return;
+  }
+  mClientSource->SetCsp(aCsp);
+  // Also cache the CSP within the document
+  mDoc->SetCsp(aCsp);
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->SendSetClientInfo(mClientSource->Info().ToIPC());
+  }
+}
+
+void nsGlobalWindowInner::SetPreloadCsp(nsIContentSecurityPolicy* aPreloadCsp) {
+  if (!mClientSource) {
+    return;
+  }
+  mClientSource->SetPreloadCsp(aPreloadCsp);
+  // Also cache the preload CSP within the document
+  mDoc->SetPreloadCsp(aPreloadCsp);
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->SendSetClientInfo(mClientSource->Info().ToIPC());
+  }
+}
+
+nsIContentSecurityPolicy* nsGlobalWindowInner::GetCsp() {
+  if (mDoc) {
+    return mDoc->GetCsp();
+  }
+
+  // If the window is partially torn down and has its document nulled out,
+  // we query the CSP we snapshot in FreeInnerObjects.
+  if (mDocumentCsp) {
+    return mDocumentCsp;
+  }
+  return nullptr;
+}
+
+RefPtr<ServiceWorker> nsGlobalWindowInner::GetOrCreateServiceWorker(
+    const ServiceWorkerDescriptor& aDescriptor) {
+  MOZ_ASSERT(NS_IsMainThread());
+  RefPtr<ServiceWorker> ref;
+  ForEachGlobalTeardownObserver(
+      [&](GlobalTeardownObserver* aObserver, bool* aDoneOut) {
+        RefPtr<ServiceWorker> sw = do_QueryObject(aObserver);
+        if (!sw || !sw->Descriptor().Matches(aDescriptor)) {
+          return;
+        }
+
+        ref = std::move(sw);
+        *aDoneOut = true;
+      });
+
+  if (!ref) {
+    ref = ServiceWorker::Create(this, aDescriptor);
+  }
+
+  return ref;
+}
+
+RefPtr<mozilla::dom::ServiceWorkerRegistration>
+nsGlobalWindowInner::GetServiceWorkerRegistration(
+    const mozilla::dom::ServiceWorkerRegistrationDescriptor& aDescriptor)
+    const {
+  MOZ_ASSERT(NS_IsMainThread());
+  RefPtr<ServiceWorkerRegistration> ref;
+  ForEachGlobalTeardownObserver(
+      [&](GlobalTeardownObserver* aObserver, bool* aDoneOut) {
+        RefPtr<ServiceWorkerRegistration> swr = do_QueryObject(aObserver);
+        if (!swr || !swr->MatchesDescriptor(aDescriptor)) {
+          return;
+        }
+
+        ref = std::move(swr);
+        *aDoneOut = true;
+      });
+  return ref;
+}
+
+RefPtr<ServiceWorkerRegistration>
+nsGlobalWindowInner::GetOrCreateServiceWorkerRegistration(
+    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
+  MOZ_ASSERT(NS_IsMainThread());
+  RefPtr<ServiceWorkerRegistration> ref =
+      GetServiceWorkerRegistration(aDescriptor);
+  if (!ref) {
+    ref = ServiceWorkerRegistration::CreateForMainThread(this, aDescriptor);
+  }
+  return ref;
+}
+
+StorageAccess nsGlobalWindowInner::GetStorageAccess() {
+  return StorageAllowedForWindow(this);
+}
+
+nsresult nsGlobalWindowInner::FireDelayedDOMEvents(bool aIncludeSubWindows) {
+  // Fires an offline status event if the offline status has changed
+  FireOfflineStatusEventIfChanged();
+
+  if (!aIncludeSubWindows) {
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIDocShell> docShell = GetDocShell();
+  if (docShell) {
+    int32_t childCount = 0;
+    docShell->GetInProcessChildCount(&childCount);
+
+    // Take a copy of the current children so that modifications to
+    // the child list don't affect to the iteration.
+    AutoTArray<nsCOMPtr<nsIDocShellTreeItem>, 8> children;
+    for (int32_t i = 0; i < childCount; ++i) {
+      nsCOMPtr<nsIDocShellTreeItem> childShell;
+      docShell->GetInProcessChildAt(i, getter_AddRefs(childShell));
+      if (childShell) {
+        children.AppendElement(childShell);
+      }
+    }
+
+    for (nsCOMPtr<nsIDocShellTreeItem> childShell : children) {
+      if (nsCOMPtr<nsPIDOMWindowOuter> pWin = childShell->GetWindow()) {
+        auto* win = nsGlobalWindowOuter::Cast(pWin);
+        win->FireDelayedDOMEvents(true);
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner: Window Control Functions
+//*****************************************************************************
+
+nsPIDOMWindowOuter* nsGlobalWindowInner::GetInProcessParentInternal() {
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  if (!outer) {
+    // No outer window available!
+    return nullptr;
+  }
+  return outer->GetInProcessParentInternal();
+}
+
+nsIPrincipal* nsGlobalWindowInner::GetTopLevelAntiTrackingPrincipal() {
+  nsPIDOMWindowOuter* outerWindow = GetOuterWindowInternal();
+  if (!outerWindow) {
+    return nullptr;
+  }
+
+  nsPIDOMWindowOuter* topLevelOuterWindow =
+      GetBrowsingContext()->Top()->GetDOMWindow();
+  if (!topLevelOuterWindow) {
+    return nullptr;
+  }
+
+  bool stopAtOurLevel =
+      mDoc && mDoc->CookieJarSettings()->GetCookieBehavior() ==
+                  nsICookieService::BEHAVIOR_REJECT_TRACKER;
+
+  if (stopAtOurLevel && topLevelOuterWindow == outerWindow) {
+    return nullptr;
+  }
+
+  nsPIDOMWindowInner* topLevelInnerWindow =
+      topLevelOuterWindow->GetCurrentInnerWindow();
+  if (NS_WARN_IF(!topLevelInnerWindow)) {
+    return nullptr;
+  }
+
+  nsIPrincipal* topLevelPrincipal =
+      nsGlobalWindowInner::Cast(topLevelInnerWindow)->GetPrincipal();
+  if (NS_WARN_IF(!topLevelPrincipal)) {
+    return nullptr;
+  }
+
+  return topLevelPrincipal;
+}
+
+nsIPrincipal* nsGlobalWindowInner::GetClientPrincipal() {
+  return mClientSource ? mClientSource->GetPrincipal() : nullptr;
+}
+
+bool nsGlobalWindowInner::IsInFullScreenTransition() {
+  if (!mIsChrome) {
+    return false;
+  }
+
+  nsGlobalWindowOuter* outerWindow = GetOuterWindowInternal();
+  if (!outerWindow) {
+    return false;
+  }
+
+  return outerWindow->mIsInFullScreenTransition;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner: Timeout Functions
+//*****************************************************************************
+
+class WindowScriptTimeoutHandler final : public ScriptTimeoutHandler {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(WindowScriptTimeoutHandler,
+                                           ScriptTimeoutHandler)
+
+  WindowScriptTimeoutHandler(JSContext* aCx, nsIGlobalObject* aGlobal,
+                             const nsAString& aExpression)
+      : ScriptTimeoutHandler(aCx, aGlobal, aExpression),
+        mInitiatingScript(ScriptLoader::GetActiveScript(aCx)) {}
+
+  MOZ_CAN_RUN_SCRIPT virtual bool Call(const char* aExecutionReason) override;
+
+ private:
+  virtual ~WindowScriptTimeoutHandler() = default;
+
+  // Initiating script for use when evaluating mExpr on the main thread.
+  RefPtr<JS::loader::LoadedScript> mInitiatingScript;
+};
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(WindowScriptTimeoutHandler,
+                                   ScriptTimeoutHandler, mInitiatingScript)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(WindowScriptTimeoutHandler)
+NS_INTERFACE_MAP_END_INHERITING(ScriptTimeoutHandler)
+
+NS_IMPL_ADDREF_INHERITED(WindowScriptTimeoutHandler, ScriptTimeoutHandler)
+NS_IMPL_RELEASE_INHERITED(WindowScriptTimeoutHandler, ScriptTimeoutHandler)
+
+bool WindowScriptTimeoutHandler::Call(const char* aExecutionReason) {
+  // New script entry point required, due to the "Create a script" sub-step
+  // of
+  // http://www.whatwg.org/specs/web-apps/current-work/#timer-initialisation-steps
+  nsAutoMicroTask mt;
+  AutoEntryScript aes(mGlobal, aExecutionReason, true);
+  JS::CompileOptions options(aes.cx());
+  options.setFileAndLine(mFileName.get(), mLineNo);
+  options.setNoScriptRval(true);
+  options.setIntroductionType("domTimer");
+  JS::Rooted<JSObject*> global(aes.cx(), mGlobal->GetGlobalJSObject());
+  {
+    JSExecutionContext exec(aes.cx(), global, options);
+    nsresult rv = exec.Compile(mExpr);
+
+    JS::Rooted<JSScript*> script(aes.cx(), exec.MaybeGetScript());
+    if (script) {
+      if (mInitiatingScript) {
+        mInitiatingScript->AssociateWithScript(script);
+      }
+
+      rv = exec.ExecScript();
+    }
+
+    if (rv == NS_SUCCESS_DOM_SCRIPT_EVALUATION_THREW_UNCATCHABLE) {
+      return false;
+    }
+  }
+
+  return true;
+};
+
+nsGlobalWindowInner* nsGlobalWindowInner::InnerForSetTimeoutOrInterval(
+    ErrorResult& aError) {
+  nsGlobalWindowOuter* outer = GetOuterWindowInternal();
+  nsPIDOMWindowInner* currentInner =
+      outer ? outer->GetCurrentInnerWindow() : this;
+
+  // If forwardTo is not the window with an active document then we want the
+  // call to setTimeout/Interval to be a noop, so return null but don't set an
+  // error.
+  return HasActiveDocument() ? nsGlobalWindowInner::Cast(currentInner)
+                             : nullptr;
+}
+
+int32_t nsGlobalWindowInner::SetTimeout(JSContext* aCx, Function& aFunction,
+                                        int32_t aTimeout,
+                                        const Sequence<JS::Value>& aArguments,
+                                        ErrorResult& aError) {
+  return SetTimeoutOrInterval(aCx, aFunction, aTimeout, aArguments, false,
+                              aError);
+}
+
+int32_t nsGlobalWindowInner::SetTimeout(JSContext* aCx,
+                                        const nsAString& aHandler,
+                                        int32_t aTimeout,
+                                        const Sequence<JS::Value>& /* unused */,
+                                        ErrorResult& aError) {
+  return SetTimeoutOrInterval(aCx, aHandler, aTimeout, false, aError);
+}
+
+int32_t nsGlobalWindowInner::SetInterval(JSContext* aCx, Function& aFunction,
+                                         const int32_t aTimeout,
+                                         const Sequence<JS::Value>& aArguments,
+                                         ErrorResult& aError) {
+  return SetTimeoutOrInterval(aCx, aFunction, aTimeout, aArguments, true,
+                              aError);
+}
+
+int32_t nsGlobalWindowInner::SetInterval(
+    JSContext* aCx, const nsAString& aHandler, const int32_t aTimeout,
+    const Sequence<JS::Value>& /* unused */, ErrorResult& aError) {
+  return SetTimeoutOrInterval(aCx, aHandler, aTimeout, true, aError);
+}
+
+int32_t nsGlobalWindowInner::SetTimeoutOrInterval(
+    JSContext* aCx, Function& aFunction, int32_t aTimeout,
+    const Sequence<JS::Value>& aArguments, bool aIsInterval,
+    ErrorResult& aError) {
+  nsGlobalWindowInner* inner = InnerForSetTimeoutOrInterval(aError);
+  if (!inner) {
+    return -1;
+  }
+
+  if (inner != this) {
+    RefPtr<nsGlobalWindowInner> innerRef(inner);
+    return innerRef->SetTimeoutOrInterval(aCx, aFunction, aTimeout, aArguments,
+                                          aIsInterval, aError);
+  }
+
+  DebuggerNotificationDispatch(
+      this, aIsInterval ? DebuggerNotificationType::SetInterval
+                        : DebuggerNotificationType::SetTimeout);
+
+  if (!GetContextInternal() || !HasJSGlobal()) {
+    // This window was already closed, or never properly initialized,
+    // don't let a timer be scheduled on such a window.
+    aError.Throw(NS_ERROR_NOT_INITIALIZED);
+    return 0;
+  }
+
+  nsTArray<JS::Heap<JS::Value>> args;
+  if (!args.AppendElements(aArguments, fallible)) {
+    aError.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return 0;
+  }
+
+  RefPtr<TimeoutHandler> handler =
+      new CallbackTimeoutHandler(aCx, this, &aFunction, std::move(args));
+
+  int32_t result;
+  aError =
+      mTimeoutManager->SetTimeout(handler, aTimeout, aIsInterval,
+                                  Timeout::Reason::eTimeoutOrInterval, &result);
+  return result;
+}
+
+int32_t nsGlobalWindowInner::SetTimeoutOrInterval(JSContext* aCx,
+                                                  const nsAString& aHandler,
+                                                  int32_t aTimeout,
+                                                  bool aIsInterval,
+                                                  ErrorResult& aError) {
+  nsGlobalWindowInner* inner = InnerForSetTimeoutOrInterval(aError);
+  if (!inner) {
+    return -1;
+  }
+
+  if (inner != this) {
+    RefPtr<nsGlobalWindowInner> innerRef(inner);
+    return innerRef->SetTimeoutOrInterval(aCx, aHandler, aTimeout, aIsInterval,
+                                          aError);
+  }
+
+  DebuggerNotificationDispatch(
+      this, aIsInterval ? DebuggerNotificationType::SetInterval
+                        : DebuggerNotificationType::SetTimeout);
+
+  if (!GetContextInternal() || !HasJSGlobal()) {
+    // This window was already closed, or never properly initialized,
+    // don't let a timer be scheduled on such a window.
+    aError.Throw(NS_ERROR_NOT_INITIALIZED);
+    return 0;
+  }
+
+  bool allowEval = false;
+  aError = CSPEvalChecker::CheckForWindow(aCx, this, aHandler, &allowEval);
+  if (NS_WARN_IF(aError.Failed()) || !allowEval) {
+    return 0;
+  }
+
+  RefPtr<TimeoutHandler> handler =
+      new WindowScriptTimeoutHandler(aCx, this, aHandler);
+
+  int32_t result;
+  aError =
+      mTimeoutManager->SetTimeout(handler, aTimeout, aIsInterval,
+                                  Timeout::Reason::eTimeoutOrInterval, &result);
+  return result;
+}
+
+static const char* GetTimeoutReasonString(Timeout* aTimeout) {
+  switch (aTimeout->mReason) {
+    case Timeout::Reason::eTimeoutOrInterval:
+      if (aTimeout->mIsInterval) {
+        return "setInterval handler";
+      }
+      return "setTimeout handler";
+    case Timeout::Reason::eIdleCallbackTimeout:
+      return "setIdleCallback handler (timed out)";
+    case Timeout::Reason::eAbortSignalTimeout:
+      return "AbortSignal timeout";
+    case Timeout::Reason::eDelayedWebTaskTimeout:
+      return "delayedWebTaskCallback handler (timed out)";
+    default:
+      MOZ_CRASH("Unexpected enum value");
+      return "";
+  }
+  MOZ_CRASH("Unexpected enum value");
+  return "";
+}
+
+bool nsGlobalWindowInner::RunTimeoutHandler(Timeout* aTimeout,
+                                            nsIScriptContext* aScx) {
+  // Hold on to the timeout in case mExpr or mFunObj releases its
+  // doc.
+  // XXXbz Our caller guarantees it'll hold on to the timeout (because
+  // we're MOZ_CAN_RUN_SCRIPT), so we can probably stop doing that...
+  RefPtr<Timeout> timeout = aTimeout;
+  Timeout* last_running_timeout = mTimeoutManager->BeginRunningTimeout(timeout);
+  timeout->mRunning = true;
+
+  // Push this timeout's popup control state, which should only be
+  // enabled the first time a timeout fires that was created while
+  // popups were enabled and with a delay less than
+  // "dom.disable_open_click_delay".
+  AutoPopupStatePusher popupStatePusher(timeout->mPopupState);
+
+  // Clear the timeout's popup state, if any, to prevent interval
+  // timeouts from repeatedly opening poups.
+  timeout->mPopupState = PopupBlocker::openAbused;
+
+  uint32_t nestingLevel = TimeoutManager::GetNestingLevel();
+  TimeoutManager::SetNestingLevel(timeout->mNestingLevel);
+
+  const char* reason = GetTimeoutReasonString(timeout);
+
+  nsCString str;
+  if (profiler_thread_is_being_profiled_for_markers()) {
+    TimeDuration originalInterval = timeout->When() - timeout->SubmitTime();
+    str.Append(reason);
+    str.Append(" with interval ");
+    str.AppendInt(int(originalInterval.ToMilliseconds()));
+    str.Append("ms: ");
+    nsCString handlerDescription;
+    timeout->mScriptHandler->GetDescription(handlerDescription);
+    str.Append(handlerDescription);
+  }
+  AUTO_PROFILER_MARKER_TEXT("setTimeout callback", DOM,
+                            MarkerOptions(MarkerStack::TakeBacktrace(
+                                              timeout->TakeProfilerBacktrace()),
+                                          MarkerInnerWindowId(mWindowID)),
+                            str);
+
+  bool abortIntervalHandler;
+  {
+    RefPtr<TimeoutHandler> handler(timeout->mScriptHandler);
+
+    CallbackDebuggerNotificationGuard guard(
+        this, timeout->mIsInterval
+                  ? DebuggerNotificationType::SetIntervalCallback
+                  : DebuggerNotificationType::SetTimeoutCallback);
+    abortIntervalHandler = !handler->Call(reason);
+  }
+
+  // If we received an uncatchable exception, do not schedule the timeout again.
+  // This allows the slow script dialog to break easy DoS attacks like
+  // setInterval(function() { while(1); }, 100);
+  if (abortIntervalHandler) {
+    // If it wasn't an interval timer to begin with, this does nothing.  If it
+    // was, we'll treat it as a timeout that we just ran and discard it when
+    // we return.
+    timeout->mIsInterval = false;
+  }
+
+  // We ignore any failures from calling EvaluateString() on the context or
+  // Call() on a Function here since we're in a loop
+  // where we're likely to be running timeouts whose OS timers
+  // didn't fire in time and we don't want to not fire those timers
+  // now just because execution of one timer failed. We can't
+  // propagate the error to anyone who cares about it from this
+  // point anyway, and the script context should have already reported
+  // the script error in the usual way - so we just drop it.
+
+  TimeoutManager::SetNestingLevel(nestingLevel);
+
+  mTimeoutManager->EndRunningTimeout(last_running_timeout);
+  timeout->mRunning = false;
+
+  return timeout->mCleared;
+}
+
+//*****************************************************************************
+// nsGlobalWindowInner: Helper Functions
+//*****************************************************************************
+
+already_AddRefed<nsIDocShellTreeOwner> nsGlobalWindowInner::GetTreeOwner() {
+  FORWARD_TO_OUTER(GetTreeOwner, (), nullptr);
+}
+
+already_AddRefed<nsIWebBrowserChrome>
+nsGlobalWindowInner::GetWebBrowserChrome() {
+  nsCOMPtr<nsIDocShellTreeOwner> treeOwner = GetTreeOwner();
+
+  nsCOMPtr<nsIWebBrowserChrome> browserChrome = do_GetInterface(treeOwner);
+  return browserChrome.forget();
+}
+
+nsIScrollableFrame* nsGlobalWindowInner::GetScrollFrame() {
+  FORWARD_TO_OUTER(GetScrollFrame, (), nullptr);
+}
+
+bool nsGlobalWindowInner::IsPrivateBrowsing() {
+  nsCOMPtr<nsILoadContext> loadContext = do_QueryInterface(GetDocShell());
+  return loadContext && loadContext->UsePrivateBrowsing();
+}
+
+void nsGlobalWindowInner::FlushPendingNotifications(FlushType aType) {
+  if (mDoc) {
+    mDoc->FlushPendingNotifications(aType);
+  }
+}
+
+void nsGlobalWindowInner::EnableDeviceSensor(uint32_t aType) {
+  bool alreadyEnabled = false;
+  for (uint32_t i = 0; i < mEnabledSensors.Length(); i++) {
+    if (mEnabledSensors[i] == aType) {
+      alreadyEnabled = true;
+      break;
+    }
+  }
+
+  mEnabledSensors.AppendElement(aType);
+
+  if (alreadyEnabled) {
+    return;
+  }
+
+  nsCOMPtr<nsIDeviceSensors> ac = do_GetService(NS_DEVICE_SENSORS_CONTRACTID);
+  if (ac) {
+    ac->AddWindowListener(aType, this);
+  }
+}
+
+void nsGlobalWindowInner::DisableDeviceSensor(uint32_t aType) {
+  int32_t doomedElement = -1;
+  int32_t listenerCount = 0;
+  for (uint32_t i = 0; i < mEnabledSensors.Length(); i++) {
+    if (mEnabledSensors[i] == aType) {
+      doomedElement = i;
+      listenerCount++;
+    }
+  }
+
+  if (doomedElement == -1) {
+    return;
+  }
+
+  mEnabledSensors.RemoveElementAt(doomedElement);
+
+  if (listenerCount > 1) {
+    return;
+  }
+
+  nsCOMPtr<nsIDeviceSensors> ac = do_GetService(NS_DEVICE_SENSORS_CONTRACTID);
+  if (ac) {
+    ac->RemoveWindowListener(aType, this);
+  }
+}
+
+#if defined(MOZ_WIDGET_ANDROID)
+void nsGlobalWindowInner::EnableOrientationChangeListener() {
+  if (!ShouldResistFingerprinting(RFPTarget::ScreenOrientation)) {
+    mHasOrientationChangeListeners = true;
+    mOrientationAngle = Orientation(CallerType::System);
+  }
+}
+
+void nsGlobalWindowInner::DisableOrientationChangeListener() {
+  mHasOrientationChangeListeners = false;
+}
+#endif
+
+void nsGlobalWindowInner::SetHasGamepadEventListener(
+    bool aHasGamepad /* = true*/) {
+  mHasGamepad = aHasGamepad;
+  if (aHasGamepad) {
+    EnableGamepadUpdates();
+  }
+}
+
+void nsGlobalWindowInner::NotifyDetectXRRuntimesCompleted() {
+  if (!mXRRuntimeDetectionInFlight) {
+    return;
+  }
+  mXRRuntimeDetectionInFlight = false;
+  if (mXRPermissionRequestInFlight) {
+    return;
+  }
+  gfx::VRManagerChild* vm = gfx::VRManagerChild::Get();
+  bool supported = vm->RuntimeSupportsVR();
+  if (!supported) {
+    // A VR runtime was not installed; we can suppress
+    // the permission prompt
+    OnXRPermissionRequestCancel();
+    return;
+  }
+  // A VR runtime was found.  Display a permission prompt before
+  // allowing it to be accessed.
+  // Connect to the VRManager in order to receive the runtime
+  // detection results.
+  mXRPermissionRequestInFlight = true;
+  RefPtr<XRPermissionRequest> request =
+      new XRPermissionRequest(this, WindowID());
+  Unused << NS_WARN_IF(NS_FAILED(request->Start()));
+}
+
+void nsGlobalWindowInner::RequestXRPermission() {
+  if (IsDying()) {
+    // Do not proceed if the window is dying, as that will result
+    // in leaks of objects that get re-allocated after FreeInnerObjects
+    // has been called, including mVREventObserver.
+    return;
+  }
+  if (mXRPermissionGranted) {
+    // Don't prompt redundantly once permission to
+    // access XR devices has been granted.
+    OnXRPermissionRequestAllow();
+    return;
+  }
+  if (mXRRuntimeDetectionInFlight || mXRPermissionRequestInFlight) {
+    // Don't allow multiple simultaneous permissions requests;
+    return;
+  }
+  // Before displaying a permission prompt, detect
+  // if there is any VR runtime installed.
+  gfx::VRManagerChild* vm = gfx::VRManagerChild::Get();
+  mXRRuntimeDetectionInFlight = true;
+  EnableVRUpdates();
+  vm->DetectRuntimes();
+}
+
+void nsGlobalWindowInner::OnXRPermissionRequestAllow() {
+  mXRPermissionRequestInFlight = false;
+  if (IsDying()) {
+    // The window may have started dying while the permission request
+    // is in flight.
+    // Do not proceed if the window is dying, as that will result
+    // in leaks of objects that get re-allocated after FreeInnerObjects
+    // has been called, including mNavigator.
+    return;
+  }
+  mXRPermissionGranted = true;
+
+  NotifyHasXRSession();
+
+  dom::Navigator* nav = Navigator();
+  MOZ_ASSERT(nav != nullptr);
+  nav->OnXRPermissionRequestAllow();
+}
+
+void nsGlobalWindowInner::OnXRPermissionRequestCancel() {
+  mXRPermissionRequestInFlight = false;
+  if (IsDying()) {
+    // The window may have started dying while the permission request
+    // is in flight.
+    // Do not proceed if the window is dying, as that will result
+    // in leaks of objects that get re-allocated after FreeInnerObjects
+    // has been called, including mNavigator.
+    return;
+  }
+  dom::Navigator* nav = Navigator();
+  MOZ_ASSERT(nav != nullptr);
+  nav->OnXRPermissionRequestCancel();
+}
+
+void nsGlobalWindowInner::EventListenerAdded(nsAtom* aType) {
+  if (aType == nsGkAtoms::onvrdisplayactivate ||
+      aType == nsGkAtoms::onvrdisplayconnect ||
+      aType == nsGkAtoms::onvrdisplaydeactivate ||
+      aType == nsGkAtoms::onvrdisplaydisconnect ||
+      aType == nsGkAtoms::onvrdisplaypresentchange) {
+    RequestXRPermission();
+  }
+
+  if (aType == nsGkAtoms::onvrdisplayactivate) {
+    mHasVRDisplayActivateEvents = true;
+  }
+
+  if (aType == nsGkAtoms::onunload && mWindowGlobalChild) {
+    if (++mUnloadOrBeforeUnloadListenerCount == 1) {
+      mWindowGlobalChild->BlockBFCacheFor(BFCacheStatus::UNLOAD_LISTENER);
+    }
+  }
+
+  if (aType == nsGkAtoms::onbeforeunload && mWindowGlobalChild) {
+    if (!mozilla::SessionHistoryInParent() ||
+        !StaticPrefs::
+            docshell_shistory_bfcache_ship_allow_beforeunload_listeners()) {
+      if (++mUnloadOrBeforeUnloadListenerCount == 1) {
+        mWindowGlobalChild->BlockBFCacheFor(
+            BFCacheStatus::BEFOREUNLOAD_LISTENER);
+      }
+    }
+    if (!mDoc || !(mDoc->GetSandboxFlags() & SANDBOXED_MODALS)) {
+      mWindowGlobalChild->BeforeUnloadAdded();
+      MOZ_ASSERT(mWindowGlobalChild->BeforeUnloadListeners() > 0);
+    }
+  }
+
+  // We need to initialize localStorage in order to receive notifications.
+  if (aType == nsGkAtoms::onstorage) {
+    ErrorResult rv;
+    GetLocalStorage(rv);
+    rv.SuppressException();
+
+    if (NextGenLocalStorageEnabled() && mLocalStorage &&
+        mLocalStorage->Type() == Storage::eLocalStorage) {
+      auto object = static_cast<LSObject*>(mLocalStorage.get());
+
+      Unused << NS_WARN_IF(NS_FAILED(object->EnsureObserver()));
+    }
+  }
+}
+
+void nsGlobalWindowInner::EventListenerRemoved(nsAtom* aType) {
+  if (aType == nsGkAtoms::onunload && mWindowGlobalChild) {
+    MOZ_ASSERT(mUnloadOrBeforeUnloadListenerCount > 0);
+    if (--mUnloadOrBeforeUnloadListenerCount == 0) {
+      mWindowGlobalChild->UnblockBFCacheFor(BFCacheStatus::UNLOAD_LISTENER);
+    }
+  }
+
+  if (aType == nsGkAtoms::onbeforeunload && mWindowGlobalChild) {
+    if (!mozilla::SessionHistoryInParent() ||
+        !StaticPrefs::
+            docshell_shistory_bfcache_ship_allow_beforeunload_listeners()) {
+      if (--mUnloadOrBeforeUnloadListenerCount == 0) {
+        mWindowGlobalChild->UnblockBFCacheFor(
+            BFCacheStatus::BEFOREUNLOAD_LISTENER);
+      }
+    }
+    if (!mDoc || !(mDoc->GetSandboxFlags() & SANDBOXED_MODALS)) {
+      mWindowGlobalChild->BeforeUnloadRemoved();
+      MOZ_ASSERT(mWindowGlobalChild->BeforeUnloadListeners() >= 0);
+    }
+  }
+
+  if (aType == nsGkAtoms::onstorage) {
+    if (NextGenLocalStorageEnabled() && mLocalStorage &&
+        mLocalStorage->Type() == Storage::eLocalStorage &&
+        // The remove event is fired even if this isn't the last listener, so
+        // only remove if there are no other listeners left.
+        mListenerManager &&
+        !mListenerManager->HasListenersFor(nsGkAtoms::onstorage)) {
+      auto object = static_cast<LSObject*>(mLocalStorage.get());
+
+      object->DropObserver();
+    }
+  }
+}
+
+void nsGlobalWindowInner::NotifyHasXRSession() {
+  if (IsDying()) {
+    // Do not proceed if the window is dying, as that will result
+    // in leaks of objects that get re-allocated after FreeInnerObjects
+    // has been called, including mVREventObserver.
+    return;
+  }
+  if (mWindowGlobalChild && !mHasXRSession) {
+    mWindowGlobalChild->BlockBFCacheFor(BFCacheStatus::HAS_USED_VR);
+  }
+  mHasXRSession = true;
+  EnableVRUpdates();
+}
+
+bool nsGlobalWindowInner::HasUsedVR() const {
+  // Returns true only if content has enumerated and activated
+  // XR devices.  Detection of XR runtimes without activation
+  // will not cause true to be returned.
+  return mHasXRSession;
+}
+
+bool nsGlobalWindowInner::IsVRContentDetected() const {
+  // Returns true only if the content will respond to
+  // the VRDisplayActivate event.
+  return mHasVRDisplayActivateEvents;
+}
+
+bool nsGlobalWindowInner::IsVRContentPresenting() const {
+  for (const auto& display : mVRDisplays) {
+    if (display->IsAnyPresenting(gfx::kVRGroupAll)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void nsGlobalWindowInner::AddSizeOfIncludingThis(
+    nsWindowSizes& aWindowSizes) const {
+  aWindowSizes.mDOMSizes.mDOMOtherSize +=
+      aWindowSizes.mState.mMallocSizeOf(this);
+  aWindowSizes.mDOMSizes.mDOMOtherSize +=
+      nsIGlobalObject::ShallowSizeOfExcludingThis(
+          aWindowSizes.mState.mMallocSizeOf);
+
+  EventListenerManager* elm = GetExistingListenerManager();
+  if (elm) {
+    aWindowSizes.mDOMSizes.mDOMOtherSize +=
+        elm->SizeOfIncludingThis(aWindowSizes.mState.mMallocSizeOf);
+    aWindowSizes.mDOMEventListenersCount += elm->ListenerCount();
+  }
+  if (mDoc) {
+    // Multiple global windows can share a document. So only measure the
+    // document if it (a) doesn't have a global window, or (b) it's the
+    // primary document for the window.
+    if (!mDoc->GetInnerWindow() || mDoc->GetInnerWindow() == this) {
+      mDoc->DocAddSizeOfIncludingThis(aWindowSizes);
+    }
+  }
+
+  if (mNavigator) {
+    aWindowSizes.mDOMSizes.mDOMOtherSize +=
+        mNavigator->SizeOfIncludingThis(aWindowSizes.mState.mMallocSizeOf);
+  }
+
+  ForEachGlobalTeardownObserver([&](GlobalTeardownObserver* et,
+                                    bool* aDoneOut) {
+    if (nsCOMPtr<nsISizeOfEventTarget> iSizeOf = do_QueryObject(et)) {
+      aWindowSizes.mDOMSizes.mDOMEventTargetsSize +=
+          iSizeOf->SizeOfEventTargetIncludingThis(
+              aWindowSizes.mState.mMallocSizeOf);
+    }
+    if (nsCOMPtr<DOMEventTargetHelper> helper = do_QueryObject(et)) {
+      if (EventListenerManager* elm = helper->GetExistingListenerManager()) {
+        aWindowSizes.mDOMEventListenersCount += elm->ListenerCount();
+      }
+    }
+    ++aWindowSizes.mDOMEventTargetsCount;
+  });
+
+  if (mPerformance) {
+    aWindowSizes.mDOMSizes.mDOMPerformanceUserEntries =
+        mPerformance->SizeOfUserEntries(aWindowSizes.mState.mMallocSizeOf);
+    aWindowSizes.mDOMSizes.mDOMPerformanceResourceEntries =
+        mPerformance->SizeOfResourceEntries(aWindowSizes.mState.mMallocSizeOf);
+    aWindowSizes.mDOMSizes.mDOMPerformanceEventEntries =
+        mPerformance->SizeOfEventEntries(aWindowSizes.mState.mMallocSizeOf);
+  }
+}
+
+void nsGlobalWindowInner::RegisterDataDocumentForMemoryReporting(
+    Document* aDocument) {
+  aDocument->SetAddedToMemoryReportAsDataDocument();
+  mDataDocumentsForMemoryReporting.AppendElement(aDocument);
+}
+
+void nsGlobalWindowInner::UnregisterDataDocumentForMemoryReporting(
+    Document* aDocument) {
+  DebugOnly<bool> found =
+      mDataDocumentsForMemoryReporting.RemoveElement(aDocument);
+  MOZ_ASSERT(found);
+}
+
+void nsGlobalWindowInner::CollectDOMSizesForDataDocuments(
+    nsWindowSizes& aSize) const {
+  for (Document* doc : mDataDocumentsForMemoryReporting) {
+    if (doc) {
+      doc->DocAddSizeOfIncludingThis(aSize);
+    }
+  }
+}
+
+void nsGlobalWindowInner::AddGamepad(GamepadHandle aHandle, Gamepad* aGamepad) {
+  // Create the index we will present to content based on which indices are
+  // already taken, as required by the spec.
+  // https://w3c.github.io/gamepad/gamepad.html#widl-Gamepad-index
+  int index = 0;
+  while (mGamepadIndexSet.Contains(index)) {
+    ++index;
+  }
+  mGamepadIndexSet.Put(index);
+  aGamepad->SetIndex(index);
+  mGamepads.InsertOrUpdate(aHandle, RefPtr{aGamepad});
+}
+
+void nsGlobalWindowInner::RemoveGamepad(GamepadHandle aHandle) {
+  RefPtr<Gamepad> gamepad;
+  if (!mGamepads.Get(aHandle, getter_AddRefs(gamepad))) {
+    return;
+  }
+  // Free up the index we were using so it can be reused
+  mGamepadIndexSet.Remove(gamepad->Index());
+  mGamepads.Remove(aHandle);
+}
+
+void nsGlobalWindowInner::GetGamepads(nsTArray<RefPtr<Gamepad>>& aGamepads) {
+  aGamepads.Clear();
+
+  // navigator.getGamepads() always returns an empty array when
+  // privacy.resistFingerprinting is true.
+  if (ShouldResistFingerprinting(RFPTarget::Gamepad)) {
+    return;
+  }
+
+  // mGamepads.Count() may not be sufficient, but it's not harmful.
+  aGamepads.SetCapacity(mGamepads.Count());
+  for (const auto& entry : mGamepads) {
+    Gamepad* gamepad = entry.GetWeak();
+    aGamepads.EnsureLengthAtLeast(gamepad->Index() + 1);
+    aGamepads[gamepad->Index()] = gamepad;
+  }
+}
+
+already_AddRefed<Gamepad> nsGlobalWindowInner::GetGamepad(
+    GamepadHandle aHandle) {
+  RefPtr<Gamepad> gamepad;
+
+  if (mGamepads.Get(aHandle, getter_AddRefs(gamepad))) {
+    return gamepad.forget();
+  }
+
+  return nullptr;
+}
+
+void nsGlobalWindowInner::SetHasSeenGamepadInput(bool aHasSeen) {
+  mHasSeenGamepadInput = aHasSeen;
+}
+
+bool nsGlobalWindowInner::HasSeenGamepadInput() { return mHasSeenGamepadInput; }
+
+void nsGlobalWindowInner::SyncGamepadState() {
+  if (mHasSeenGamepadInput) {
+    RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());
+    for (const auto& entry : mGamepads) {
+      gamepadManager->SyncGamepadState(entry.GetKey(), this, entry.GetWeak());
+    }
+  }
+}
+
+void nsGlobalWindowInner::StopGamepadHaptics() {
+  if (mHasSeenGamepadInput) {
+    RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());
+    gamepadManager->StopHaptics();
+  }
+}
+
+bool nsGlobalWindowInner::UpdateVRDisplays(
+    nsTArray<RefPtr<mozilla::dom::VRDisplay>>& aDevices) {
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+  aDevices = mVRDisplays.Clone();
+  return true;
+}
+
+void nsGlobalWindowInner::NotifyActiveVRDisplaysChanged() {
+  if (mNavigator) {
+    mNavigator->NotifyActiveVRDisplaysChanged();
+  }
+}
+
+void nsGlobalWindowInner::NotifyPresentationGenerationChanged(
+    uint32_t aDisplayID) {
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID) {
+      display->OnPresentationGenerationChanged();
+    }
+  }
+}
+
+void nsGlobalWindowInner::DispatchVRDisplayActivate(
+    uint32_t aDisplayID, mozilla::dom::VRDisplayEventReason aReason) {
+  // Ensure that our list of displays is up to date
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+
+  // Search for the display identified with aDisplayID and fire the
+  // event if found.
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID) {
+      if (aReason != VRDisplayEventReason::Navigation &&
+          display->IsAnyPresenting(gfx::kVRGroupContent)) {
+        // We only want to trigger this event if nobody is presenting to the
+        // display already or when a page is loaded by navigating away
+        // from a page with an active VR Presentation.
+        continue;
+      }
+
+      VRDisplayEventInit init;
+      init.mBubbles = false;
+      init.mCancelable = false;
+      init.mDisplay = display;
+      init.mReason.Construct(aReason);
+
+      RefPtr<VRDisplayEvent> event =
+          VRDisplayEvent::Constructor(this, u"vrdisplayactivate"_ns, init);
+      // vrdisplayactivate is a trusted event, allowing VRDisplay.requestPresent
+      // to be used in response to link traversal, user request (chrome UX), and
+      // HMD mounting detection sensors.
+      event->SetTrusted(true);
+      // VRDisplay.requestPresent normally requires a user gesture; however, an
+      // exception is made to allow it to be called in response to
+      // vrdisplayactivate during VR link traversal.
+      display->StartHandlingVRNavigationEvent();
+      DispatchEvent(*event);
+      display->StopHandlingVRNavigationEvent();
+      // Once we dispatch the event, we must not access any members as an event
+      // listener can do anything, including closing windows.
+      return;
+    }
+  }
+}
+
+void nsGlobalWindowInner::DispatchVRDisplayDeactivate(
+    uint32_t aDisplayID, mozilla::dom::VRDisplayEventReason aReason) {
+  // Ensure that our list of displays is up to date
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+
+  // Search for the display identified with aDisplayID and fire the
+  // event if found.
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID && display->IsPresenting()) {
+      // We only want to trigger this event to content that is presenting to
+      // the display already.
+
+      VRDisplayEventInit init;
+      init.mBubbles = false;
+      init.mCancelable = false;
+      init.mDisplay = display;
+      init.mReason.Construct(aReason);
+
+      RefPtr<VRDisplayEvent> event =
+          VRDisplayEvent::Constructor(this, u"vrdisplaydeactivate"_ns, init);
+      event->SetTrusted(true);
+      DispatchEvent(*event);
+      // Once we dispatch the event, we must not access any members as an event
+      // listener can do anything, including closing windows.
+      return;
+    }
+  }
+}
+
+void nsGlobalWindowInner::DispatchVRDisplayConnect(uint32_t aDisplayID) {
+  // Ensure that our list of displays is up to date
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+
+  // Search for the display identified with aDisplayID and fire the
+  // event if found.
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID) {
+      // Fire event even if not presenting to the display.
+      VRDisplayEventInit init;
+      init.mBubbles = false;
+      init.mCancelable = false;
+      init.mDisplay = display;
+      // VRDisplayEvent.reason is not set for vrdisplayconnect
+
+      RefPtr<VRDisplayEvent> event =
+          VRDisplayEvent::Constructor(this, u"vrdisplayconnect"_ns, init);
+      event->SetTrusted(true);
+      DispatchEvent(*event);
+      // Once we dispatch the event, we must not access any members as an event
+      // listener can do anything, including closing windows.
+      return;
+    }
+  }
+}
+
+void nsGlobalWindowInner::DispatchVRDisplayDisconnect(uint32_t aDisplayID) {
+  // Ensure that our list of displays is up to date
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+
+  // Search for the display identified with aDisplayID and fire the
+  // event if found.
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID) {
+      // Fire event even if not presenting to the display.
+      VRDisplayEventInit init;
+      init.mBubbles = false;
+      init.mCancelable = false;
+      init.mDisplay = display;
+      // VRDisplayEvent.reason is not set for vrdisplaydisconnect
+
+      RefPtr<VRDisplayEvent> event =
+          VRDisplayEvent::Constructor(this, u"vrdisplaydisconnect"_ns, init);
+      event->SetTrusted(true);
+      DispatchEvent(*event);
+      // Once we dispatch the event, we must not access any members as an event
+      // listener can do anything, including closing windows.
+      return;
+    }
+  }
+}
+
+void nsGlobalWindowInner::DispatchVRDisplayPresentChange(uint32_t aDisplayID) {
+  // Ensure that our list of displays is up to date
+  VRDisplay::UpdateVRDisplays(mVRDisplays, this);
+
+  // Search for the display identified with aDisplayID and fire the
+  // event if found.
+  for (const auto& display : mVRDisplays) {
+    if (display->DisplayId() == aDisplayID) {
+      // Fire event even if not presenting to the display.
+      VRDisplayEventInit init;
+      init.mBubbles = false;
+      init.mCancelable = false;
+      init.mDisplay = display;
+      // VRDisplayEvent.reason is not set for vrdisplaypresentchange
+      RefPtr<VRDisplayEvent> event =
+          VRDisplayEvent::Constructor(this, u"vrdisplaypresentchange"_ns, init);
+      event->SetTrusted(true);
+      DispatchEvent(*event);
+      // Once we dispatch the event, we must not access any members as an event
+      // listener can do anything, including closing windows.
+      return;
+    }
+  }
+}
+
+enum WindowState {
+  // These constants need to match the constants in Window.webidl
+  STATE_MAXIMIZED = 1,
+  STATE_MINIMIZED = 2,
+  STATE_NORMAL = 3,
+  STATE_FULLSCREEN = 4
+};
+
+uint16_t nsGlobalWindowInner::WindowState() {
+  nsCOMPtr<nsIWidget> widget = GetMainWidget();
+
+  int32_t mode = widget ? widget->SizeMode() : 0;
+
+  switch (mode) {
+    case nsSizeMode_Minimized:
+      return STATE_MINIMIZED;
+    case nsSizeMode_Maximized:
+      return STATE_MAXIMIZED;
+    case nsSizeMode_Fullscreen:
+      return STATE_FULLSCREEN;
+    case nsSizeMode_Normal:
+      return STATE_NORMAL;
+    default:
+      NS_WARNING("Illegal window state for this chrome window");
+      break;
+  }
+
+  return STATE_NORMAL;
+}
+
+bool nsGlobalWindowInner::IsFullyOccluded() {
+  nsCOMPtr<nsIWidget> widget = GetMainWidget();
+  return widget && widget->IsFullyOccluded();
+}
+
+void nsGlobalWindowInner::Maximize() {
+  if (nsCOMPtr<nsIWidget> widget = GetMainWidget()) {
+    widget->SetSizeMode(nsSizeMode_Maximized);
+  }
+}
+
+void nsGlobalWindowInner::Minimize() {
+  if (nsCOMPtr<nsIWidget> widget = GetMainWidget()) {
+    widget->SetSizeMode(nsSizeMode_Minimized);
+  }
+}
+
+void nsGlobalWindowInner::Restore() {
+  if (nsCOMPtr<nsIWidget> widget = GetMainWidget()) {
+    widget->SetSizeMode(nsSizeMode_Normal);
+  }
+}
+
+void nsGlobalWindowInner::GetWorkspaceID(nsAString& workspaceID) {
+  workspaceID.Truncate();
+  if (nsCOMPtr<nsIWidget> widget = GetMainWidget()) {
+    return widget->GetWorkspaceID(workspaceID);
+  }
+}
+
+void nsGlobalWindowInner::MoveToWorkspace(const nsAString& workspaceID) {
+  if (nsCOMPtr<nsIWidget> widget = GetMainWidget()) {
+    widget->MoveToWorkspace(workspaceID);
+  }
+}
+
+void nsGlobalWindowInner::GetAttention(ErrorResult& aResult) {
+  return GetAttentionWithCycleCount(-1, aResult);
+}
+
+void nsGlobalWindowInner::GetAttentionWithCycleCount(int32_t aCycleCount,
+                                                     ErrorResult& aError) {
+  nsCOMPtr<nsIWidget> widget = GetMainWidget();
+
+  if (widget) {
+    aError = widget->GetAttention(aCycleCount);
+  }
+}
+
+already_AddRefed<Promise> nsGlobalWindowInner::PromiseDocumentFlushed(
+    PromiseDocumentFlushedCallback& aCallback, ErrorResult& aError) {
+  MOZ_RELEASE_ASSERT(IsChromeWindow());
+
+  if (!IsCurrentInnerWindow()) {
+    aError.ThrowInvalidStateError("Not the current inner window");
+    return nullptr;
+  }
+  if (!mDoc) {
+    aError.ThrowInvalidStateError("No document");
+    return nullptr;
+  }
+
+  if (mIteratingDocumentFlushedResolvers) {
+    aError.ThrowInvalidStateError("Already iterating through resolvers");
+    return nullptr;
+  }
+
+  PresShell* presShell = mDoc->GetPresShell();
+  if (!presShell) {
+    aError.ThrowInvalidStateError("No pres shell");
+    return nullptr;
+  }
+
+  // We need to associate the lifetime of the Promise to the lifetime
+  // of the caller's global. That way, if the window we're observing
+  // refresh driver ticks on goes away before our observer is fired,
+  // we can still resolve the Promise.
+  nsIGlobalObject* global = GetIncumbentGlobal();
+  if (!global) {
+    aError.ThrowInvalidStateError("No incumbent global");
+    return nullptr;
+  }
+
+  RefPtr<Promise> resultPromise = Promise::Create(global, aError);
+  if (aError.Failed()) {
+    return nullptr;
+  }
+
+  UniquePtr<PromiseDocumentFlushedResolver> flushResolver(
+      new PromiseDocumentFlushedResolver(resultPromise, aCallback));
+
+  if (!presShell->NeedStyleFlush() && !presShell->NeedLayoutFlush()) {
+    flushResolver->Call();
+    return resultPromise.forget();
+  }
+
+  if (!TryToObserveRefresh()) {
+    aError.ThrowInvalidStateError("Couldn't observe refresh");
+    return nullptr;
+  }
+
+  mDocumentFlushedResolvers.AppendElement(std::move(flushResolver));
+  return resultPromise.forget();
+}
+
+bool nsGlobalWindowInner::TryToObserveRefresh() {
+  if (mObservingRefresh) {
+    return true;
+  }
+
+  if (!mDoc) {
+    return false;
+  }
+
+  nsPresContext* pc = mDoc->GetPresContext();
+  if (!pc) {
+    return false;
+  }
+
+  mObservingRefresh = true;
+  auto observer = MakeRefPtr<ManagedPostRefreshObserver>(
+      pc, [win = RefPtr{this}](bool aWasCanceled) {
+        if (win->MaybeCallDocumentFlushedResolvers(
+                /* aUntilExhaustion = */ aWasCanceled)) {
+          return ManagedPostRefreshObserver::Unregister::No;
+        }
+        win->mObservingRefresh = false;
+        return ManagedPostRefreshObserver::Unregister::Yes;
+      });
+  pc->RegisterManagedPostRefreshObserver(observer.get());
+  return mObservingRefresh;
+}
+
+void nsGlobalWindowInner::CallDocumentFlushedResolvers(bool aUntilExhaustion) {
+  while (true) {
+    {
+      // To coalesce MicroTask checkpoints inside callback call, enclose the
+      // inner loop with nsAutoMicroTask, and perform a MicroTask checkpoint
+      // after the loop.
+      nsAutoMicroTask mt;
+
+      mIteratingDocumentFlushedResolvers = true;
+
+      auto resolvers = std::move(mDocumentFlushedResolvers);
+      for (const auto& resolver : resolvers) {
+        resolver->Call();
+      }
+
+      mIteratingDocumentFlushedResolvers = false;
+    }
+
+    // Leaving nsAutoMicroTask above will perform MicroTask checkpoint, and
+    // Promise callbacks there may create mDocumentFlushedResolvers items.
+
+    // If there's no new resolvers, or we're not exhausting the queue, there's
+    // nothing to do (we'll keep observing if there's any new observer).
+    //
+    // Otherwise, keep looping to call all promises. This case can happen while
+    // destroying the window.  This violates the constraint that the
+    // promiseDocumentFlushed callback only ever run when no flush is needed,
+    // but it's necessary to resolve the Promise returned by that.
+    if (!aUntilExhaustion || mDocumentFlushedResolvers.IsEmpty()) {
+      break;
+    }
+  }
+}
+
+bool nsGlobalWindowInner::MaybeCallDocumentFlushedResolvers(
+    bool aUntilExhaustion) {
+  MOZ_ASSERT(mDoc);
+
+  PresShell* presShell = mDoc->GetPresShell();
+  if (!presShell || aUntilExhaustion) {
+    CallDocumentFlushedResolvers(/* aUntilExhaustion = */ true);
+    return false;
+  }
+
+  if (presShell->NeedStyleFlush() || presShell->NeedLayoutFlush()) {
+    // By the time our observer fired, something has already invalidated
+    // style or layout - or perhaps we're still in the middle of a flush that
+    // was interrupted. In either case, we'll wait until the next refresh driver
+    // tick instead and try again.
+    return true;
+  }
+
+  CallDocumentFlushedResolvers(/* aUntilExhaustion = */ false);
+  return !mDocumentFlushedResolvers.IsEmpty();
+}
+
+already_AddRefed<nsWindowRoot> nsGlobalWindowInner::GetWindowRoot(
+    mozilla::ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetWindowRootOuter, (), aError, nullptr);
+}
+
+void nsGlobalWindowInner::SetCursor(const nsACString& aCursor,
+                                    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SetCursorOuter, (aCursor, aError), aError, );
+}
+
+nsIBrowserDOMWindow* nsGlobalWindowInner::GetBrowserDOMWindow(
+    ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(GetBrowserDOMWindow, (), aError, nullptr);
+}
+
+void nsGlobalWindowInner::SetBrowserDOMWindow(
+    nsIBrowserDOMWindow* aBrowserWindow, ErrorResult& aError) {
+  FORWARD_TO_OUTER_OR_THROW(SetBrowserDOMWindowOuter, (aBrowserWindow),
+                            aError, );
+}
+
+void nsGlobalWindowInner::NotifyDefaultButtonLoaded(Element& aDefaultButton,
+                                                    ErrorResult& aError) {
+  // Don't snap to a disabled button.
+  nsCOMPtr<nsIDOMXULControlElement> xulControl = aDefaultButton.AsXULControl();
+  if (!xulControl) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+  bool disabled;
+  aError = xulControl->GetDisabled(&disabled);
+  if (aError.Failed() || disabled) {
+    return;
+  }
+
+  // Get the button rect in screen coordinates.
+  nsIFrame* frame = aDefaultButton.GetPrimaryFrame();
+  if (!frame) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+  LayoutDeviceIntRect buttonRect = LayoutDeviceIntRect::FromAppUnitsToNearest(
+      frame->GetScreenRectInAppUnits(),
+      frame->PresContext()->AppUnitsPerDevPixel());
+
+  // Get the widget rect in screen coordinates.
+  nsIWidget* widget = GetNearestWidget();
+  if (!widget) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+  LayoutDeviceIntRect widgetRect = widget->GetScreenBounds();
+
+  // Convert the buttonRect coordinates from screen to the widget.
+  buttonRect -= widgetRect.TopLeft();
+  nsresult rv = widget->OnDefaultButtonLoaded(buttonRect);
+  if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
+    aError.Throw(rv);
+  }
+}
+
+ChromeMessageBroadcaster* nsGlobalWindowInner::MessageManager() {
+  MOZ_ASSERT(IsChromeWindow());
+  if (!mChromeFields.mMessageManager) {
+    RefPtr<ChromeMessageBroadcaster> globalMM =
+        nsFrameMessageManager::GetGlobalMessageManager();
+    mChromeFields.mMessageManager = new ChromeMessageBroadcaster(globalMM);
+  }
+  return mChromeFields.mMessageManager;
+}
+
+ChromeMessageBroadcaster* nsGlobalWindowInner::GetGroupMessageManager(
+    const nsAString& aGroup) {
+  MOZ_ASSERT(IsChromeWindow());
+
+  return mChromeFields.mGroupMessageManagers
+      .LookupOrInsertWith(
+          aGroup,
+          [&] {
+            return MakeAndAddRef<ChromeMessageBroadcaster>(MessageManager());
+          })
+      .get();
+}
+
+void nsGlobalWindowInner::InitWasOffline() { mWasOffline = NS_IsOffline(); }
+
+int16_t nsGlobalWindowInner::Orientation(CallerType aCallerType) {
+  // GetOrientationAngle() returns 0, 90, 180 or 270.
+  // window.orientation returns -90, 0, 90 or 180.
+  if (nsIGlobalObject::ShouldResistFingerprinting(
+          aCallerType, RFPTarget::ScreenOrientation)) {
+    return 0;
+  }
+  int16_t angle = AssertedCast<int16_t>(Screen()->GetOrientationAngle());
+  return angle <= 180 ? angle : angle - 360;
+}
+
+already_AddRefed<Console> nsGlobalWindowInner::GetConsole(JSContext* aCx,
+                                                          ErrorResult& aRv) {
+  if (!mConsole) {
+    mConsole = Console::Create(aCx, this, aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return nullptr;
+    }
+  }
+
+  RefPtr<Console> console = mConsole;
+  return console.forget();
+}
+
+bool nsGlobalWindowInner::IsSecureContext() const {
+  JS::Realm* realm = js::GetNonCCWObjectRealm(GetWrapperPreserveColor());
+  return JS::GetIsSecureContext(realm);
+}
+
+External* nsGlobalWindowInner::External() {
+  if (!mExternal) {
+    mExternal = new dom::External(ToSupports(this));
+  }
+
+  return mExternal;
+}
+
+void nsGlobalWindowInner::ClearDocumentDependentSlots(JSContext* aCx) {
+  // If JSAPI OOMs here, there is basically nothing we can do to recover safely.
+  if (!Window_Binding::ClearCachedDocumentValue(aCx, this) ||
+      !Window_Binding::ClearCachedPerformanceValue(aCx, this)) {
+    MOZ_CRASH("Unhandlable OOM while clearing document dependent slots.");
+  }
+}
+
+/* static */
+JSObject* nsGlobalWindowInner::CreateNamedPropertiesObject(
+    JSContext* aCx, JS::Handle<JSObject*> aProto) {
+  return WindowNamedPropertiesHandler::Create(aCx, aProto);
+}
+
+void nsGlobalWindowInner::RedefineProperty(JSContext* aCx,
+                                           const char* aPropName,
+                                           JS::Handle<JS::Value> aValue,
+                                           ErrorResult& aError) {
+  JS::Rooted<JSObject*> thisObj(aCx, GetWrapperPreserveColor());
+  if (!thisObj) {
+    aError.Throw(NS_ERROR_UNEXPECTED);
+    return;
+  }
+
+  if (!JS_WrapObject(aCx, &thisObj) ||
+      !JS_DefineProperty(aCx, thisObj, aPropName, aValue, JSPROP_ENUMERATE)) {
+    aError.Throw(NS_ERROR_FAILURE);
+  }
+}
+
+void nsGlobalWindowInner::FireOnNewGlobalObject() {
+  // AutoEntryScript required to invoke debugger hook, which is a
+  // Gecko-specific concept at present.
+  AutoEntryScript aes(this, "nsGlobalWindowInner report new global");
+  JS::Rooted<JSObject*> global(aes.cx(), GetWrapper());
+  JS_FireOnNewGlobalObject(aes.cx(), global);
+}
+
+#if defined(_WINDOWS_) && !defined(MOZ_WRAPPED_WINDOWS_H)
+#  pragma message( \
+      "wrapper failure reason: " MOZ_WINDOWS_WRAPPER_DISABLED_REASON)
+#  error "Never include unwrapped windows.h in this file!"
+#endif
+
+already_AddRefed<Promise> nsGlobalWindowInner::CreateImageBitmap(
+    const ImageBitmapSource& aImage, const ImageBitmapOptions& aOptions,
+    ErrorResult& aRv) {
+  return ImageBitmap::Create(this, aImage, Nothing(), aOptions, aRv);
+}
+
+already_AddRefed<Promise> nsGlobalWindowInner::CreateImageBitmap(
+    const ImageBitmapSource& aImage, int32_t aSx, int32_t aSy, int32_t aSw,
+    int32_t aSh, const ImageBitmapOptions& aOptions, ErrorResult& aRv) {
+  return ImageBitmap::Create(
+      this, aImage, Some(gfx::IntRect(aSx, aSy, aSw, aSh)), aOptions, aRv);
+}
+
+// https://html.spec.whatwg.org/#structured-cloning
+void nsGlobalWindowInner::StructuredClone(
+    JSContext* aCx, JS::Handle<JS::Value> aValue,
+    const StructuredSerializeOptions& aOptions,
+    JS::MutableHandle<JS::Value> aRetval, ErrorResult& aError) {
+  nsContentUtils::StructuredClone(aCx, this, aValue, aOptions, aRetval, aError);
+}
+
+nsresult nsGlobalWindowInner::Dispatch(
+    already_AddRefed<nsIRunnable>&& aRunnable) const {
+  MOZ_RELEASE_ASSERT(NS_IsMainThread());
+  return NS_DispatchToCurrentThread(std::move(aRunnable));
+}
+
+nsISerialEventTarget* nsGlobalWindowInner::SerialEventTarget() const {
+  MOZ_RELEASE_ASSERT(NS_IsMainThread());
+  return GetMainThreadSerialEventTarget();
+}
+
+Worklet* nsGlobalWindowInner::GetPaintWorklet(ErrorResult& aRv) {
+  if (!mPaintWorklet) {
+    nsIPrincipal* principal = GetPrincipal();
+    if (!principal) {
+      aRv.Throw(NS_ERROR_FAILURE);
+      return nullptr;
+    }
+
+    mPaintWorklet = PaintWorkletImpl::CreateWorklet(this, principal);
+  }
+
+  return mPaintWorklet;
+}
+
+void nsGlobalWindowInner::GetRegionalPrefsLocales(
+    nsTArray<nsString>& aLocales) {
+  MOZ_ASSERT(mozilla::intl::LocaleService::GetInstance());
+
+  AutoTArray<nsCString, 10> rpLocales;
+  mozilla::intl::LocaleService::GetInstance()->GetRegionalPrefsLocales(
+      rpLocales);
+
+  for (const auto& loc : rpLocales) {
+    aLocales.AppendElement(NS_ConvertUTF8toUTF16(loc));
+  }
+}
+
+void nsGlobalWindowInner::GetWebExposedLocales(nsTArray<nsString>& aLocales) {
+  MOZ_ASSERT(mozilla::intl::LocaleService::GetInstance());
+
+  AutoTArray<nsCString, 10> rpLocales;
+  mozilla::intl::LocaleService::GetInstance()->GetWebExposedLocales(rpLocales);
+
+  for (const auto& loc : rpLocales) {
+    aLocales.AppendElement(NS_ConvertUTF8toUTF16(loc));
+  }
+}
+
+IntlUtils* nsGlobalWindowInner::GetIntlUtils(ErrorResult& aError) {
+  if (!mIntlUtils) {
+    mIntlUtils = new IntlUtils(this);
+  }
+
+  return mIntlUtils;
+}
+
+void nsGlobalWindowInner::StoreSharedWorker(SharedWorker* aSharedWorker) {
+  MOZ_ASSERT(aSharedWorker);
+  MOZ_ASSERT(!mSharedWorkers.Contains(aSharedWorker));
+
+  mSharedWorkers.AppendElement(aSharedWorker);
+}
+
+void nsGlobalWindowInner::ForgetSharedWorker(SharedWorker* aSharedWorker) {
+  MOZ_ASSERT(aSharedWorker);
+  MOZ_ASSERT(mSharedWorkers.Contains(aSharedWorker));
+
+  mSharedWorkers.RemoveElement(aSharedWorker);
+}
+
+RefPtr<GenericPromise> nsGlobalWindowInner::StorageAccessPermissionChanged(
+    bool aGranted) {
+  // Invalidate cached StorageAllowed field so that calls to GetLocalStorage
+  // give us the updated localStorage object.
+  ClearStorageAllowedCache();
+
+  // If we're always partitioning non-cookie third party storage then
+  // there is no need to clear it when the user accepts requestStorageAccess.
+  if (StaticPrefs::
+          privacy_partition_always_partition_third_party_non_cookie_storage()) {
+    // Just reset the active cookie and storage principals
+    nsCOMPtr<nsICookieJarSettings> cjs;
+    if (mDoc) {
+      cjs = mDoc->CookieJarSettings();
+    }
+    StorageAccess storageAccess = StorageAllowedForWindow(this);
+    if (ShouldPartitionStorage(storageAccess) &&
+        StoragePartitioningEnabled(storageAccess, cjs)) {
+      if (mDoc) {
+        mDoc->ClearActiveCookieAndStoragePrincipals();
+      }
+      // When storage access is granted the content process needs to request the
+      // updated cookie list from the parent process. Otherwise the site won't
+      // have access to unpartitioned cookies via document.cookie without a
+      // reload.
+      if (aGranted) {
+        nsIChannel* channel = mDoc->GetChannel();
+        if (channel) {
+          // The promise resolves when the updated cookie list has been received
+          // from the parent.
+          return ContentChild::UpdateCookieStatus(channel);
+        }
+      }
+    }
+  }
+
+  PropagateStorageAccessPermissionGrantedToWorkers(*this);
+
+  // If we have a partitioned localStorage, it's time to replace it with a real
+  // one in order to receive notifications.
+
+  if (mLocalStorage) {
+    IgnoredErrorResult error;
+    GetLocalStorage(error);
+    if (NS_WARN_IF(error.Failed())) {
+      return MozPromise<bool, nsresult, true>::CreateAndReject(
+          error.StealNSResult(), __func__);
+    }
+
+    MOZ_ASSERT(mLocalStorage &&
+               mLocalStorage->Type() == Storage::eLocalStorage);
+
+    if (NextGenLocalStorageEnabled() && mListenerManager &&
+        mListenerManager->HasListenersFor(nsGkAtoms::onstorage)) {
+      auto object = static_cast<LSObject*>(mLocalStorage.get());
+
+      object->EnsureObserver();
+    }
+  }
+
+  // Reset the IndexedDB factory.
+  mIndexedDB = nullptr;
+
+  // Reset DOM Cache
+  mCacheStorage = nullptr;
+
+  // Reset the active cookie and storage principals
+  if (mDoc) {
+    mDoc->ClearActiveCookieAndStoragePrincipals();
+    if (mWindowGlobalChild) {
+      // XXX(farre): This is a bit backwards, but clearing the cookie
+      // principal might make us end up with a new effective storage
+      // principal on the child side than on the parent side, which
+      // means that we need to sync it. See bug 1705359.
+      mWindowGlobalChild->SetDocumentPrincipal(
+          mDoc->NodePrincipal(), mDoc->EffectiveStoragePrincipal());
+    }
+  }
+
+  // When storage access is granted the content process needs to request the
+  // updated cookie list from the parent process. Otherwise the site won't have
+  // access to unpartitioned cookies via document.cookie without a reload.
+  if (aGranted) {
+    nsIChannel* channel = mDoc->GetChannel();
+    if (channel) {
+      // The promise resolves when the updated cookie list has been received
+      // from the parent.
+      return ContentChild::UpdateCookieStatus(channel);
+    }
+  }
+  return MozPromise<bool, nsresult, true>::CreateAndResolve(true, __func__);
+}
+
+ContentMediaController* nsGlobalWindowInner::GetContentMediaController() {
+  if (mContentMediaController) {
+    return mContentMediaController;
+  }
+  if (!mBrowsingContext) {
+    return nullptr;
+  }
+
+  mContentMediaController = new ContentMediaController(mBrowsingContext->Id());
+  return mContentMediaController;
+}
+
+void nsGlobalWindowInner::SetScrollMarks(const nsTArray<uint32_t>& aScrollMarks,
+                                         bool aOnHScrollbar) {
+  mScrollMarks.Assign(aScrollMarks);
+  mScrollMarksOnHScrollbar = aOnHScrollbar;
+
+  // Mark the scrollbar for repainting.
+  if (mDoc) {
+    PresShell* presShell = mDoc->GetPresShell();
+    if (presShell) {
+      nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
+      if (sf) {
+        sf->InvalidateScrollbars();
+      }
+    }
+  }
+}
+
+/* static */
+already_AddRefed<nsGlobalWindowInner> nsGlobalWindowInner::Create(
+    nsGlobalWindowOuter* aOuterWindow, bool aIsChrome,
+    WindowGlobalChild* aActor) {
+  RefPtr<nsGlobalWindowInner> window =
+      new nsGlobalWindowInner(aOuterWindow, aActor);
+  if (aIsChrome) {
+    window->mIsChrome = true;
+    window->mCleanMessageManager = true;
+  }
+
+  if (aActor) {
+    aActor->InitWindowGlobal(window);
+  }
+
+  window->InitWasOffline();
+  return window.forget();
+}
+
+JS::loader::ModuleLoaderBase* nsGlobalWindowInner::GetModuleLoader(
+    JSContext* aCx) {
+  Document* document = GetDocument();
+  if (!document) {
+    return nullptr;
+  }
+
+  ScriptLoader* loader = document->ScriptLoader();
+  if (!loader) {
+    return nullptr;
+  }
+
+  return loader->GetModuleLoader();
+}
+
+nsIURI* nsPIDOMWindowInner::GetDocumentURI() const {
+  return mDoc ? mDoc->GetDocumentURI() : mDocumentURI.get();
+}
+
+nsIURI* nsPIDOMWindowInner::GetDocBaseURI() const {
+  return mDoc ? mDoc->GetDocBaseURI() : mDocBaseURI.get();
+}
+
+mozilla::dom::WindowContext* nsPIDOMWindowInner::GetWindowContext() const {
+  return mWindowGlobalChild ? mWindowGlobalChild->WindowContext() : nullptr;
+}
+
+bool nsPIDOMWindowInner::RemoveFromBFCacheSync() {
+  if (Document* doc = GetExtantDoc()) {
+    return doc->RemoveFromBFCacheSync();
+  }
+  return false;
+}
+
+void nsPIDOMWindowInner::MaybeCreateDoc() {
+  // XXX: Forward to outer?
+  MOZ_ASSERT(!mDoc);
+  if (nsIDocShell* docShell = GetDocShell()) {
+    // Note that |document| here is the same thing as our mDoc, but we
+    // don't have to explicitly set the member variable because the docshell
+    // has already called SetNewDocument().
+    nsCOMPtr<Document> document = docShell->GetDocument();
+    Unused << document;
+  }
+}
+
+mozilla::dom::DocGroup* nsPIDOMWindowInner::GetDocGroup() const {
+  Document* doc = GetExtantDoc();
+  if (doc) {
+    return doc->GetDocGroup();
+  }
+  return nullptr;
+}
+
+mozilla::dom::BrowsingContextGroup*
+nsPIDOMWindowInner::GetBrowsingContextGroup() const {
+  return mBrowsingContext ? mBrowsingContext->Group() : nullptr;
+}
+
+nsIGlobalObject* nsPIDOMWindowInner::AsGlobal() {
+  return nsGlobalWindowInner::Cast(this);
+}
+
+const nsIGlobalObject* nsPIDOMWindowInner::AsGlobal() const {
+  return nsGlobalWindowInner::Cast(this);
+}
+
+RefPtr<GenericPromise>
+nsPIDOMWindowInner::SaveStorageAccessPermissionGranted() {
+  WindowContext* wc = GetWindowContext();
+  if (wc) {
+    Unused << wc->SetUsingStorageAccess(true);
+  }
+
+  return nsGlobalWindowInner::Cast(this)->StorageAccessPermissionChanged(true);
+}
+
+RefPtr<GenericPromise>
+nsPIDOMWindowInner::SaveStorageAccessPermissionRevoked() {
+  WindowContext* wc = GetWindowContext();
+  if (wc) {
+    Unused << wc->SetUsingStorageAccess(false);
+  }
+
+  return nsGlobalWindowInner::Cast(this)->StorageAccessPermissionChanged(false);
+}
+
+bool nsPIDOMWindowInner::UsingStorageAccess() {
+  WindowContext* wc = GetWindowContext();
+  if (!wc) {
+    return false;
+  }
+
+  return wc->GetUsingStorageAccess();
+}
+
+nsPIDOMWindowInner::nsPIDOMWindowInner(nsPIDOMWindowOuter* aOuterWindow,
+                                       WindowGlobalChild* aActor)
+    : mMutationBits(0),
+      mIsDocumentLoaded(false),
+      mIsHandlingResizeEvent(false),
+      mMayHaveDOMActivateEventListeners(false),
+      mMayHavePaintEventListener(false),
+      mMayHaveTouchEventListener(false),
+      mMayHaveSelectionChangeEventListener(false),
+      mMayHaveFormSelectEventListener(false),
+      mMayHaveMouseEnterLeaveEventListener(false),
+      mMayHavePointerEnterLeaveEventListener(false),
+      mMayHaveTransitionEventListener(false),
+      mMayHaveBeforeInputEventListenerForTelemetry(false),
+      mMutationObserverHasObservedNodeForTelemetry(false),
+      mOuterWindow(aOuterWindow),
+      mWindowID(0),
+      mHasNotifiedGlobalCreated(false),
+      mMarkedCCGeneration(0),
+      mHasTriedToCacheTopInnerWindow(false),
+      mNumOfIndexedDBDatabases(0),
+      mNumOfOpenWebSockets(0),
+      mEvent(nullptr),
+      mWindowGlobalChild(aActor),
+      mWasSuspendedByGroup(false) {
+  MOZ_ASSERT(aOuterWindow);
+  mBrowsingContext = aOuterWindow->GetBrowsingContext();
+
+  if (mWindowGlobalChild) {
+    mWindowID = aActor->InnerWindowId();
+
+    MOZ_ASSERT(mWindowGlobalChild->BrowsingContext() == mBrowsingContext);
+  } else {
+    mWindowID = nsContentUtils::GenerateWindowId();
+  }
+}
+
+nsPIDOMWindowInner::~nsPIDOMWindowInner() = default;
+
+#undef FORWARD_TO_OUTER
+#undef FORWARD_TO_OUTER_OR_THROW
+#undef FORWARD_TO_OUTER_VOID