Add m-esr52 at 52.6.0

1 files changed, 4156 insertions, 0 deletions

diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
new file mode 100644
index 000000000..291df5f27
--- /dev/null
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -0,0 +1,4156 @@
+/* -*- 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 "nsDOMWindowUtils.h"
+
+#include "mozilla/layers/CompositorBridgeChild.h"
+#include "mozilla/layers/LayerTransactionChild.h"
+#include "nsPresContext.h"
+#include "nsDOMClassInfoID.h"
+#include "nsError.h"
+#include "nsIDOMEvent.h"
+#include "nsQueryContentEventResult.h"
+#include "nsGlobalWindow.h"
+#include "nsIDocument.h"
+#include "nsFocusManager.h"
+#include "nsFrameManager.h"
+#include "nsRefreshDriver.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/BlobBinding.h"
+#include "mozilla/dom/Touch.h"
+#include "mozilla/PendingAnimationTracker.h"
+#include "nsIObjectLoadingContent.h"
+#include "nsFrame.h"
+#include "mozilla/layers/ShadowLayers.h"
+#include "mozilla/layers/APZCCallbackHelper.h"
+#include "ClientLayerManager.h"
+#include "nsQueryObject.h"
+#ifdef MOZ_FMP4
+#include "MP4Decoder.h"
+#endif
+#include "CubebUtils.h"
+
+#include "nsIScrollableFrame.h"
+
+#include "nsContentUtils.h"
+
+#include "nsIFrame.h"
+#include "nsIWidget.h"
+#include "nsCharsetSource.h"
+#include "nsJSEnvironment.h"
+#include "nsJSUtils.h"
+
+#include "mozilla/ChaosMode.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/MiscEvents.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/TextEvents.h"
+#include "mozilla/TextEventDispatcher.h"
+#include "mozilla/TouchEvents.h"
+
+#include "nsViewManager.h"
+
+#include "nsIDOMHTMLCanvasElement.h"
+#include "nsLayoutUtils.h"
+#include "nsComputedDOMStyle.h"
+#include "nsIPresShell.h"
+#include "nsCSSProps.h"
+#include "nsTArrayHelpers.h"
+#include "nsIDocShell.h"
+#include "nsIContentViewer.h"
+#include "mozilla/StyleAnimationValue.h"
+#include "mozilla/dom/File.h"
+#include "mozilla/dom/FileBinding.h"
+#include "mozilla/dom/DOMRect.h"
+#include <algorithm>
+
+#if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK)
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+#endif
+
+#include "Layers.h"
+#include "gfxPrefs.h"
+
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/TabChild.h"
+#include "mozilla/dom/IDBFactoryBinding.h"
+#include "mozilla/dom/IDBMutableFileBinding.h"
+#include "mozilla/dom/IDBMutableFile.h"
+#include "mozilla/dom/IndexedDatabaseManager.h"
+#include "mozilla/dom/PermissionMessageUtils.h"
+#include "mozilla/dom/quota/PersistenceType.h"
+#include "mozilla/dom/quota/QuotaManager.h"
+#include "mozilla/layers/FrameUniformityData.h"
+#include "mozilla/layers/ShadowLayers.h"
+#include "nsPrintfCString.h"
+#include "nsViewportInfo.h"
+#include "nsIFormControl.h"
+#include "nsIScriptError.h"
+//#include "nsWidgetsCID.h"
+#include "FrameLayerBuilder.h"
+#include "nsDisplayList.h"
+#include "nsROCSSPrimitiveValue.h"
+#include "nsIBaseWindow.h"
+#include "nsIDocShellTreeOwner.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "GeckoProfiler.h"
+#include "mozilla/Preferences.h"
+#include "nsIContentIterator.h"
+#include "nsIDOMStyleSheet.h"
+#include "nsIStyleSheetService.h"
+#include "nsContentPermissionHelper.h"
+#include "nsCSSPseudoElements.h"            // for CSSPseudoElementType
+#include "nsNetUtil.h"
+#include "nsDocument.h"
+#include "HTMLImageElement.h"
+#include "mozilla/css/ImageLoader.h"
+#include "mozilla/layers/APZCTreeManager.h" // for layers::ZoomToRectBehavior
+#include "mozilla/dom/Promise.h"
+#include "mozilla/StyleSheetInlines.h"
+#include "mozilla/gfx/GPUProcessManager.h"
+
+#ifdef XP_WIN
+#undef GetClassName
+#endif
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::ipc;
+using namespace mozilla::layers;
+using namespace mozilla::widget;
+using namespace mozilla::gfx;
+
+class gfxContext;
+
+class OldWindowSize : public LinkedListElement<OldWindowSize>
+{
+public:
+  static void Set(nsIWeakReference* aWindowRef, const nsSize& aSize)
+  {
+    OldWindowSize* item = GetItem(aWindowRef);
+    if (item) {
+      item->mSize = aSize;
+    } else {
+      item = new OldWindowSize(aWindowRef, aSize);
+      sList.insertBack(item);
+    }
+  }
+
+  static nsSize GetAndRemove(nsIWeakReference* aWindowRef)
+  {
+    nsSize result;
+    if (OldWindowSize* item = GetItem(aWindowRef)) {
+      result = item->mSize;
+      delete item;
+    }
+    return result;
+  }
+
+private:
+  explicit OldWindowSize(nsIWeakReference* aWindowRef, const nsSize& aSize)
+    : mWindowRef(aWindowRef), mSize(aSize) { }
+  ~OldWindowSize() { };
+
+  static OldWindowSize* GetItem(nsIWeakReference* aWindowRef)
+  {
+    OldWindowSize* item = sList.getFirst();
+    while (item && item->mWindowRef != aWindowRef) {
+      item = item->getNext();
+    }
+    return item;
+  }
+
+  static LinkedList<OldWindowSize> sList;
+  nsWeakPtr mWindowRef;
+  nsSize mSize;
+};
+
+LinkedList<OldWindowSize> OldWindowSize::sList;
+
+NS_INTERFACE_MAP_BEGIN(nsDOMWindowUtils)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMWindowUtils)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMWindowUtils)
+  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ADDREF(nsDOMWindowUtils)
+NS_IMPL_RELEASE(nsDOMWindowUtils)
+
+nsDOMWindowUtils::nsDOMWindowUtils(nsGlobalWindow *aWindow)
+{
+  nsCOMPtr<nsISupports> supports = do_QueryObject(aWindow);
+  mWindow = do_GetWeakReference(supports);
+  NS_ASSERTION(aWindow->IsOuterWindow(), "How did that happen?");
+}
+
+nsDOMWindowUtils::~nsDOMWindowUtils()
+{
+  OldWindowSize::GetAndRemove(mWindow);
+}
+
+nsIPresShell*
+nsDOMWindowUtils::GetPresShell()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (!window)
+    return nullptr;
+
+  nsIDocShell *docShell = window->GetDocShell();
+  if (!docShell)
+    return nullptr;
+
+  return docShell->GetPresShell();
+}
+
+nsPresContext*
+nsDOMWindowUtils::GetPresContext()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (!window)
+    return nullptr;
+  nsIDocShell *docShell = window->GetDocShell();
+  if (!docShell)
+    return nullptr;
+  RefPtr<nsPresContext> presContext;
+  docShell->GetPresContext(getter_AddRefs(presContext));
+  return presContext;
+}
+
+nsIDocument*
+nsDOMWindowUtils::GetDocument()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (!window) {
+    return nullptr;
+  }
+  return window->GetExtantDoc();
+}
+
+LayerTransactionChild*
+nsDOMWindowUtils::GetLayerTransaction()
+{
+  nsIWidget* widget = GetWidget();
+  if (!widget)
+    return nullptr;
+
+  LayerManager* manager = widget->GetLayerManager();
+  if (!manager)
+    return nullptr;
+
+  ShadowLayerForwarder* forwarder = manager->AsShadowForwarder();
+  return forwarder && forwarder->HasShadowManager() ?
+         forwarder->GetShadowManager() :
+         nullptr;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetImageAnimationMode(uint16_t *aMode)
+{
+  NS_ENSURE_ARG_POINTER(aMode);
+  *aMode = 0;
+  nsPresContext* presContext = GetPresContext();
+  if (presContext) {
+    *aMode = presContext->ImageAnimationMode();
+    return NS_OK;
+  }
+  return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetImageAnimationMode(uint16_t aMode)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (presContext) {
+    presContext->SetImageAnimationMode(aMode);
+    return NS_OK;
+  }
+  return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetDocCharsetIsForced(bool *aIsForced)
+{
+  *aIsForced = false;
+
+  nsIDocument* doc = GetDocument();
+  *aIsForced = doc &&
+    doc->GetDocumentCharacterSetSource() >= kCharsetFromParentForced;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetDocumentMetadata(const nsAString& aName,
+                                      nsAString& aValue)
+{
+  nsIDocument* doc = GetDocument();
+  if (doc) {
+    nsCOMPtr<nsIAtom> name = NS_Atomize(aName);
+    doc->GetHeaderData(name, aValue);
+    return NS_OK;
+  }
+
+  aValue.Truncate();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::Redraw(uint32_t aCount, uint32_t *aDurationOut)
+{
+  if (aCount == 0)
+    aCount = 1;
+
+  if (nsIPresShell* presShell = GetPresShell()) {
+    nsIFrame *rootFrame = presShell->GetRootFrame();
+
+    if (rootFrame) {
+      PRIntervalTime iStart = PR_IntervalNow();
+
+      for (uint32_t i = 0; i < aCount; i++)
+        rootFrame->InvalidateFrame();
+
+#if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK)
+      XSync(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), False);
+#endif
+
+      *aDurationOut = PR_IntervalToMilliseconds(PR_IntervalNow() - iStart);
+
+      return NS_OK;
+    }
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::UpdateLayerTree()
+{
+  if (nsIPresShell* presShell = GetPresShell()) {
+    presShell->FlushPendingNotifications(Flush_Display);
+    RefPtr<nsViewManager> vm = presShell->GetViewManager();
+    nsView* view = vm->GetRootView();
+    if (view) {
+      presShell->Paint(view, view->GetBounds(),
+          nsIPresShell::PAINT_LAYERS | nsIPresShell::PAINT_SYNC_DECODE_IMAGES);
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetContentViewerSize(uint32_t *aDisplayWidth, uint32_t *aDisplayHeight)
+{
+  nsIPresShell* presShell = GetPresShell();
+  LayoutDeviceIntSize displaySize;
+
+  if (!presShell || !nsLayoutUtils::GetContentViewerSize(presShell->GetPresContext(), displaySize)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aDisplayWidth = displaySize.width;
+  *aDisplayHeight = displaySize.height;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetViewportInfo(uint32_t aDisplayWidth,
+                                  uint32_t aDisplayHeight,
+                                  double *aDefaultZoom, bool *aAllowZoom,
+                                  double *aMinZoom, double *aMaxZoom,
+                                  uint32_t *aWidth, uint32_t *aHeight,
+                                  bool *aAutoSize)
+{
+  nsIDocument* doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  nsViewportInfo info = doc->GetViewportInfo(ScreenIntSize(aDisplayWidth, aDisplayHeight));
+  *aDefaultZoom = info.GetDefaultZoom().scale;
+  *aAllowZoom = info.IsZoomAllowed();
+  *aMinZoom = info.GetMinZoom().scale;
+  *aMaxZoom = info.GetMaxZoom().scale;
+  CSSIntSize size = gfx::RoundedToInt(info.GetSize());
+  *aWidth = size.width;
+  *aHeight = size.height;
+  *aAutoSize = info.IsAutoSizeEnabled();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetDisplayPortForElement(float aXPx, float aYPx,
+                                           float aWidthPx, float aHeightPx,
+                                           nsIDOMElement* aElement,
+                                           uint32_t aPriority)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (!aElement) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+
+  if (!content) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (content->GetUncomposedDoc() != presShell->GetDocument()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  DisplayPortPropertyData* currentData =
+    static_cast<DisplayPortPropertyData*>(content->GetProperty(nsGkAtoms::DisplayPort));
+  if (currentData && currentData->mPriority > aPriority) {
+    return NS_OK;
+  }
+
+  nsRect displayport(nsPresContext::CSSPixelsToAppUnits(aXPx),
+                     nsPresContext::CSSPixelsToAppUnits(aYPx),
+                     nsPresContext::CSSPixelsToAppUnits(aWidthPx),
+                     nsPresContext::CSSPixelsToAppUnits(aHeightPx));
+
+  content->SetProperty(nsGkAtoms::DisplayPort,
+                       new DisplayPortPropertyData(displayport, aPriority),
+                       nsINode::DeleteProperty<DisplayPortPropertyData>);
+
+  if (gfxPrefs::LayoutUseContainersForRootFrames()) {
+    nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
+    if (rootScrollFrame &&
+        content == rootScrollFrame->GetContent() &&
+        nsLayoutUtils::UsesAsyncScrolling(rootScrollFrame))
+    {
+      // We are setting a root displayport for a document.
+      // The pres shell needs a special flag set.
+      presShell->SetIgnoreViewportScrolling(true);
+    }
+  }
+
+  nsIFrame* rootFrame = presShell->FrameManager()->GetRootFrame();
+  if (rootFrame) {
+    rootFrame->SchedulePaint();
+
+    // If we are hiding something that is a display root then send empty paint
+    // transaction in order to release retained layers because it won't get
+    // any more paint requests when it is hidden.
+    if (displayport.IsEmpty() &&
+        rootFrame == nsLayoutUtils::GetDisplayRootFrame(rootFrame)) {
+      nsCOMPtr<nsIWidget> widget = GetWidget();
+      if (widget) {
+        LayerManager* manager = widget->GetLayerManager();
+        manager->BeginTransaction();
+        using PaintFrameFlags = nsLayoutUtils::PaintFrameFlags;
+        nsLayoutUtils::PaintFrame(nullptr, rootFrame, nsRegion(),
+                                  NS_RGB(255, 255, 255),
+                                  nsDisplayListBuilderMode::PAINTING,
+                                  PaintFrameFlags::PAINT_WIDGET_LAYERS |
+                                  PaintFrameFlags::PAINT_EXISTING_TRANSACTION);
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetDisplayPortMarginsForElement(float aLeftMargin,
+                                                  float aTopMargin,
+                                                  float aRightMargin,
+                                                  float aBottomMargin,
+                                                  nsIDOMElement* aElement,
+                                                  uint32_t aPriority)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (!aElement) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+
+  if (!content) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (content->GetUncomposedDoc() != presShell->GetDocument()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // Note order change of arguments between our function signature and
+  // ScreenMargin constructor.
+  ScreenMargin displayportMargins(aTopMargin,
+                                  aRightMargin,
+                                  aBottomMargin,
+                                  aLeftMargin);
+
+  nsLayoutUtils::SetDisplayPortMargins(content, presShell, displayportMargins,
+                                       aPriority);
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetDisplayPortBaseForElement(int32_t aX,
+                                               int32_t aY,
+                                               int32_t aWidth,
+                                               int32_t aHeight,
+                                               nsIDOMElement* aElement)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (!aElement) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+
+  if (!content) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (content->GetUncomposedDoc() != presShell->GetDocument()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsLayoutUtils::SetDisplayPortBase(content, nsRect(aX, aY, aWidth, aHeight));
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetResolution(float aResolution)
+{
+  if (!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  presShell->SetResolution(aResolution);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetResolutionAndScaleTo(float aResolution)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  presShell->SetResolutionAndScaleTo(aResolution);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetRestoreResolution(float aResolution,
+                                       uint32_t aDisplayWidth,
+                                       uint32_t aDisplayHeight)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  presShell->SetRestoreResolution(aResolution,
+    LayoutDeviceIntSize(aDisplayWidth, aDisplayHeight));
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetResolution(float* aResolution)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aResolution = presShell->GetResolution();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsResolutionSet(bool* aIsResolutionSet) {
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aIsResolutionSet = presShell->IsResolutionSet();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetIsFirstPaint(bool aIsFirstPaint)
+{
+  if (!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  nsIPresShell* presShell = GetPresShell();
+  if (presShell) {
+    presShell->SetIsFirstPaint(aIsFirstPaint);
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsFirstPaint(bool *aIsFirstPaint)
+{
+  if (!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  nsIPresShell* presShell = GetPresShell();
+  if (presShell) {
+    *aIsFirstPaint = presShell->GetIsFirstPaint();
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPresShellId(uint32_t *aPresShellId)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (presShell) {
+    *aPresShellId = presShell->GetPresShellId();
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendMouseEvent(const nsAString& aType,
+                                 float aX,
+                                 float aY,
+                                 int32_t aButton,
+                                 int32_t aClickCount,
+                                 int32_t aModifiers,
+                                 bool aIgnoreRootScrollFrame,
+                                 float aPressure,
+                                 unsigned short aInputSourceArg,
+                                 bool aIsDOMEventSynthesized,
+                                 bool aIsWidgetEventSynthesized,
+                                 int32_t aButtons,
+                                 uint8_t aOptionalArgCount,
+                                 bool *aPreventDefault)
+{
+  return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
+                              aIgnoreRootScrollFrame, aPressure,
+                              aInputSourceArg, false, aPreventDefault,
+                              aOptionalArgCount >= 4 ?
+                                aIsDOMEventSynthesized : true,
+                              aOptionalArgCount >= 5 ?
+                                aIsWidgetEventSynthesized : false,
+                              aOptionalArgCount >= 6 ?
+                              aButtons : MOUSE_BUTTONS_NOT_SPECIFIED);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendMouseEventToWindow(const nsAString& aType,
+                                         float aX,
+                                         float aY,
+                                         int32_t aButton,
+                                         int32_t aClickCount,
+                                         int32_t aModifiers,
+                                         bool aIgnoreRootScrollFrame,
+                                         float aPressure,
+                                         unsigned short aInputSourceArg,
+                                         bool aIsDOMEventSynthesized,
+                                         bool aIsWidgetEventSynthesized,
+                                         int32_t aButtons,
+                                         uint8_t aOptionalArgCount)
+{
+  PROFILER_LABEL("nsDOMWindowUtils", "SendMouseEventToWindow",
+    js::ProfileEntry::Category::EVENTS);
+
+  return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
+                              aIgnoreRootScrollFrame, aPressure,
+                              aInputSourceArg, true, nullptr,
+                              aOptionalArgCount >= 4 ?
+                                aIsDOMEventSynthesized : true,
+                              aOptionalArgCount >= 5 ?
+                                aIsWidgetEventSynthesized : false,
+                              aOptionalArgCount >= 6 ?
+                              aButtons : MOUSE_BUTTONS_NOT_SPECIFIED);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendMouseEventCommon(const nsAString& aType,
+                                       float aX,
+                                       float aY,
+                                       int32_t aButton,
+                                       int32_t aClickCount,
+                                       int32_t aModifiers,
+                                       bool aIgnoreRootScrollFrame,
+                                       float aPressure,
+                                       unsigned short aInputSourceArg,
+                                       bool aToWindow,
+                                       bool *aPreventDefault,
+                                       bool aIsDOMEventSynthesized,
+                                       bool aIsWidgetEventSynthesized,
+                                       int32_t aButtons)
+{
+  nsCOMPtr<nsIPresShell> presShell = GetPresShell();
+  return nsContentUtils::SendMouseEvent(presShell, aType, aX, aY, aButton,
+      aButtons, aClickCount, aModifiers, aIgnoreRootScrollFrame, aPressure,
+      aInputSourceArg, aToWindow, aPreventDefault, aIsDOMEventSynthesized,
+      aIsWidgetEventSynthesized);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendPointerEventCommon(const nsAString& aType,
+                                         float aX,
+                                         float aY,
+                                         int32_t aButton,
+                                         int32_t aClickCount,
+                                         int32_t aModifiers,
+                                         bool aIgnoreRootScrollFrame,
+                                         float aPressure,
+                                         unsigned short aInputSourceArg,
+                                         int32_t aPointerId,
+                                         int32_t aWidth,
+                                         int32_t aHeight,
+                                         int32_t aTiltX,
+                                         int32_t aTiltY,
+                                         bool aIsPrimary,
+                                         bool aIsSynthesized,
+                                         uint8_t aOptionalArgCount,
+                                         bool aToWindow,
+                                         bool* aPreventDefault)
+{
+  // get the widget to send the event to
+  nsPoint offset;
+  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  EventMessage msg;
+  if (aType.EqualsLiteral("pointerdown")) {
+    msg = ePointerDown;
+  } else if (aType.EqualsLiteral("pointerup")) {
+    msg = ePointerUp;
+  } else if (aType.EqualsLiteral("pointermove")) {
+    msg = ePointerMove;
+  } else if (aType.EqualsLiteral("pointerover")) {
+    msg = ePointerOver;
+  } else if (aType.EqualsLiteral("pointerout")) {
+    msg = ePointerOut;
+  } else {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (aInputSourceArg == nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN) {
+    aInputSourceArg = nsIDOMMouseEvent::MOZ_SOURCE_MOUSE;
+  }
+
+  WidgetPointerEvent event(true, msg, widget);
+  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
+  event.button = aButton;
+  event.buttons = nsContentUtils::GetButtonsFlagForButton(aButton);
+  event.pressure = aPressure;
+  event.inputSource = aInputSourceArg;
+  event.pointerId = aPointerId;
+  event.mWidth = aWidth;
+  event.mHeight = aHeight;
+  event.tiltX = aTiltX;
+  event.tiltY = aTiltY;
+  event.mIsPrimary =
+    (nsIDOMMouseEvent::MOZ_SOURCE_MOUSE == aInputSourceArg) ? true : aIsPrimary;
+  event.mClickCount = aClickCount;
+  event.mTime = PR_IntervalNow();
+  event.mFlags.mIsSynthesizedForTests = aOptionalArgCount >= 10 ? aIsSynthesized : true;
+
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_FAILURE;
+  }
+
+  event.mRefPoint =
+    nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
+  event.mIgnoreRootScrollFrame = aIgnoreRootScrollFrame;
+
+  nsEventStatus status;
+  if (aToWindow) {
+    nsCOMPtr<nsIPresShell> presShell;
+    nsView* view = nsContentUtils::GetViewToDispatchEvent(presContext, getter_AddRefs(presShell));
+    if (!presShell || !view) {
+      return NS_ERROR_FAILURE;
+    }
+    status = nsEventStatus_eIgnore;
+    return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
+  }
+  nsresult rv = widget->DispatchEvent(&event, status);
+  if (aPreventDefault) {
+    *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendPointerEvent(const nsAString& aType,
+                                   float aX,
+                                   float aY,
+                                   int32_t aButton,
+                                   int32_t aClickCount,
+                                   int32_t aModifiers,
+                                   bool aIgnoreRootScrollFrame,
+                                   float aPressure,
+                                   unsigned short aInputSourceArg,
+                                   int32_t aPointerId,
+                                   int32_t aWidth,
+                                   int32_t aHeight,
+                                   int32_t aTiltX,
+                                   int32_t aTiltY,
+                                   bool aIsPrimary,
+                                   bool aIsSynthesized,
+                                   uint8_t aOptionalArgCount,
+                                   bool* aPreventDefault)
+{
+  PROFILER_LABEL("nsDOMWindowUtils", "SendPointerEvent",
+                 js::ProfileEntry::Category::EVENTS);
+
+  return SendPointerEventCommon(aType, aX, aY, aButton, aClickCount,
+                                aModifiers, aIgnoreRootScrollFrame,
+                                aPressure, aInputSourceArg, aPointerId,
+                                aWidth, aHeight, aTiltX, aTiltY,
+                                aIsPrimary, aIsSynthesized,
+                                aOptionalArgCount, false, aPreventDefault);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendPointerEventToWindow(const nsAString& aType,
+                                           float aX,
+                                           float aY,
+                                           int32_t aButton,
+                                           int32_t aClickCount,
+                                           int32_t aModifiers,
+                                           bool aIgnoreRootScrollFrame,
+                                           float aPressure,
+                                           unsigned short aInputSourceArg,
+                                           int32_t aPointerId,
+                                           int32_t aWidth,
+                                           int32_t aHeight,
+                                           int32_t aTiltX,
+                                           int32_t aTiltY,
+                                           bool aIsPrimary,
+                                           bool aIsSynthesized,
+                                           uint8_t aOptionalArgCount)
+{
+  PROFILER_LABEL("nsDOMWindowUtils", "SendPointerEventToWindow",
+                 js::ProfileEntry::Category::EVENTS);
+
+  return SendPointerEventCommon(aType, aX, aY, aButton, aClickCount,
+                                aModifiers, aIgnoreRootScrollFrame,
+                                aPressure, aInputSourceArg, aPointerId,
+                                aWidth, aHeight, aTiltX, aTiltY,
+                                aIsPrimary, aIsSynthesized,
+                                aOptionalArgCount, true, nullptr);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendWheelEvent(float aX,
+                                 float aY,
+                                 double aDeltaX,
+                                 double aDeltaY,
+                                 double aDeltaZ,
+                                 uint32_t aDeltaMode,
+                                 int32_t aModifiers,
+                                 int32_t aLineOrPageDeltaX,
+                                 int32_t aLineOrPageDeltaY,
+                                 uint32_t aOptions)
+{
+  // get the widget to send the event to
+  nsPoint offset;
+  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
+  if (!widget) {
+    return NS_ERROR_NULL_POINTER;
+  }
+
+  WidgetWheelEvent wheelEvent(true, eWheel, widget);
+  wheelEvent.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
+  wheelEvent.mDeltaX = aDeltaX;
+  wheelEvent.mDeltaY = aDeltaY;
+  wheelEvent.mDeltaZ = aDeltaZ;
+  wheelEvent.mDeltaMode = aDeltaMode;
+  wheelEvent.mIsMomentum =
+    (aOptions & WHEEL_EVENT_CAUSED_BY_MOMENTUM) != 0;
+  wheelEvent.mIsNoLineOrPageDelta =
+    (aOptions & WHEEL_EVENT_CAUSED_BY_NO_LINE_OR_PAGE_DELTA_DEVICE) != 0;
+  wheelEvent.mCustomizedByUserPrefs =
+    (aOptions & WHEEL_EVENT_CUSTOMIZED_BY_USER_PREFS) != 0;
+  wheelEvent.mLineOrPageDeltaX = aLineOrPageDeltaX;
+  wheelEvent.mLineOrPageDeltaY = aLineOrPageDeltaY;
+
+  wheelEvent.mTime = PR_Now() / 1000;
+
+  nsPresContext* presContext = GetPresContext();
+  NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
+
+  wheelEvent.mRefPoint =
+    nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
+
+  widget->DispatchInputEvent(&wheelEvent);
+
+  if (widget->AsyncPanZoomEnabled()) {
+    // Computing overflow deltas is not compatible with APZ, so if APZ is
+    // enabled, we skip testing it.
+    return NS_OK;
+  }
+
+  bool failedX = false;
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_ZERO) &&
+      wheelEvent.mOverflowDeltaX != 0) {
+    failedX = true;
+  }
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_POSITIVE) &&
+      wheelEvent.mOverflowDeltaX <= 0) {
+    failedX = true;
+  }
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_NEGATIVE) &&
+      wheelEvent.mOverflowDeltaX >= 0) {
+    failedX = true;
+  }
+  bool failedY = false;
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_ZERO) &&
+      wheelEvent.mOverflowDeltaY != 0) {
+    failedY = true;
+  }
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_POSITIVE) &&
+      wheelEvent.mOverflowDeltaY <= 0) {
+    failedY = true;
+  }
+  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_NEGATIVE) &&
+      wheelEvent.mOverflowDeltaY >= 0) {
+    failedY = true;
+  }
+
+#ifdef DEBUG
+  if (failedX) {
+    nsPrintfCString debugMsg("SendWheelEvent(): unexpected mOverflowDeltaX: %f",
+                             wheelEvent.mOverflowDeltaX);
+    NS_WARNING(debugMsg.get());
+  }
+  if (failedY) {
+    nsPrintfCString debugMsg("SendWheelEvent(): unexpected mOverflowDeltaY: %f",
+                             wheelEvent.mOverflowDeltaY);
+    NS_WARNING(debugMsg.get());
+  }
+#endif
+
+  return (!failedX && !failedY) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendTouchEvent(const nsAString& aType,
+                                 uint32_t *aIdentifiers,
+                                 int32_t *aXs,
+                                 int32_t *aYs,
+                                 uint32_t *aRxs,
+                                 uint32_t *aRys,
+                                 float *aRotationAngles,
+                                 float *aForces,
+                                 uint32_t aCount,
+                                 int32_t aModifiers,
+                                 bool aIgnoreRootScrollFrame,
+                                 bool *aPreventDefault)
+{
+  return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
+                              aRotationAngles, aForces, aCount, aModifiers,
+                              aIgnoreRootScrollFrame, false, aPreventDefault);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendTouchEventToWindow(const nsAString& aType,
+                                         uint32_t* aIdentifiers,
+                                         int32_t* aXs,
+                                         int32_t* aYs,
+                                         uint32_t* aRxs,
+                                         uint32_t* aRys,
+                                         float* aRotationAngles,
+                                         float* aForces,
+                                         uint32_t aCount,
+                                         int32_t aModifiers,
+                                         bool aIgnoreRootScrollFrame,
+                                         bool* aPreventDefault)
+{
+  return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
+                              aRotationAngles, aForces, aCount, aModifiers,
+                              aIgnoreRootScrollFrame, true, aPreventDefault);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendTouchEventCommon(const nsAString& aType,
+                                       uint32_t* aIdentifiers,
+                                       int32_t* aXs,
+                                       int32_t* aYs,
+                                       uint32_t* aRxs,
+                                       uint32_t* aRys,
+                                       float* aRotationAngles,
+                                       float* aForces,
+                                       uint32_t aCount,
+                                       int32_t aModifiers,
+                                       bool aIgnoreRootScrollFrame,
+                                       bool aToWindow,
+                                       bool* aPreventDefault)
+{
+  // get the widget to send the event to
+  nsPoint offset;
+  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
+  if (!widget) {
+    return NS_ERROR_NULL_POINTER;
+  }
+  EventMessage msg;
+  if (aType.EqualsLiteral("touchstart")) {
+    msg = eTouchStart;
+  } else if (aType.EqualsLiteral("touchmove")) {
+    msg = eTouchMove;
+  } else if (aType.EqualsLiteral("touchend")) {
+    msg = eTouchEnd;
+  } else if (aType.EqualsLiteral("touchcancel")) {
+    msg = eTouchCancel;
+  } else {
+    return NS_ERROR_UNEXPECTED;
+  }
+  WidgetTouchEvent event(true, msg, widget);
+  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
+  event.mTime = PR_Now();
+
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_FAILURE;
+  }
+  event.mTouches.SetCapacity(aCount);
+  for (uint32_t i = 0; i < aCount; ++i) {
+    LayoutDeviceIntPoint pt =
+      nsContentUtils::ToWidgetPoint(CSSPoint(aXs[i], aYs[i]), offset, presContext);
+    LayoutDeviceIntPoint radius =
+      LayoutDeviceIntPoint::FromAppUnitsRounded(
+        CSSPoint::ToAppUnits(CSSPoint(aRxs[i], aRys[i])),
+        presContext->AppUnitsPerDevPixel());
+
+    RefPtr<Touch> t =
+      new Touch(aIdentifiers[i], pt, radius, aRotationAngles[i], aForces[i]);
+
+    event.mTouches.AppendElement(t);
+  }
+
+  nsEventStatus status;
+  if (aToWindow) {
+    nsCOMPtr<nsIPresShell> presShell;
+    nsView* view = nsContentUtils::GetViewToDispatchEvent(presContext, getter_AddRefs(presShell));
+    if (!presShell || !view) {
+      return NS_ERROR_FAILURE;
+    }
+    status = nsEventStatus_eIgnore;
+    *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
+    return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
+  }
+
+  nsresult rv = widget->DispatchEvent(&event, status);
+  *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendKeyEvent(const nsAString& aType,
+                               int32_t aKeyCode,
+                               int32_t aCharCode,
+                               int32_t aModifiers,
+                               uint32_t aAdditionalFlags,
+                               bool* aDefaultActionTaken)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+
+  return nsContentUtils::SendKeyEvent(widget, aType, aKeyCode, aCharCode,
+                                      aModifiers, aAdditionalFlags,
+                                      aDefaultActionTaken);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeKeyEvent(int32_t aNativeKeyboardLayout,
+                                     int32_t aNativeKeyCode,
+                                     int32_t aModifiers,
+                                     const nsAString& aCharacters,
+                                     const nsAString& aUnmodifiedCharacters,
+                                     nsIObserver* aObserver)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <int32_t, int32_t, uint32_t, nsString, nsString, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeKeyEvent, aNativeKeyboardLayout,
+    aNativeKeyCode, aModifiers, aCharacters, aUnmodifiedCharacters, aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeMouseEvent(int32_t aScreenX,
+                                       int32_t aScreenY,
+                                       int32_t aNativeMessage,
+                                       int32_t aModifierFlags,
+                                       nsIDOMElement* aElement,
+                                       nsIObserver* aObserver)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <LayoutDeviceIntPoint, int32_t, int32_t, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeMouseEvent,
+    LayoutDeviceIntPoint(aScreenX, aScreenY), aNativeMessage, aModifierFlags,
+    aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeMouseMove(int32_t aScreenX,
+                                      int32_t aScreenY,
+                                      nsIDOMElement* aElement,
+                                      nsIObserver* aObserver)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <LayoutDeviceIntPoint, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeMouseMove,
+    LayoutDeviceIntPoint(aScreenX, aScreenY), aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeMouseScrollEvent(int32_t aScreenX,
+                                             int32_t aScreenY,
+                                             uint32_t aNativeMessage,
+                                             double aDeltaX,
+                                             double aDeltaY,
+                                             double aDeltaZ,
+                                             uint32_t aModifierFlags,
+                                             uint32_t aAdditionalFlags,
+                                             nsIDOMElement* aElement,
+                                             nsIObserver* aObserver)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <mozilla::LayoutDeviceIntPoint, uint32_t, double, double, double, uint32_t, uint32_t, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeMouseScrollEvent,
+    LayoutDeviceIntPoint(aScreenX, aScreenY), aNativeMessage, aDeltaX, aDeltaY,
+    aDeltaZ, aModifierFlags, aAdditionalFlags, aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeTouchPoint(uint32_t aPointerId,
+                                       uint32_t aTouchState,
+                                       int32_t aScreenX,
+                                       int32_t aScreenY,
+                                       double aPressure,
+                                       uint32_t aOrientation,
+                                       nsIObserver* aObserver)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (aPressure < 0 || aPressure > 1 || aOrientation > 359) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <uint32_t, nsIWidget::TouchPointerState, LayoutDeviceIntPoint, double, uint32_t, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeTouchPoint, aPointerId,
+    (nsIWidget::TouchPointerState)aTouchState,
+    LayoutDeviceIntPoint(aScreenX, aScreenY),
+    aPressure, aOrientation, aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeTouchTap(int32_t aScreenX,
+                                     int32_t aScreenY,
+                                     bool aLongTap,
+                                     nsIObserver* aObserver)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_DispatchToMainThread(NewRunnableMethod
+    <LayoutDeviceIntPoint, bool, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeTouchTap,
+    LayoutDeviceIntPoint(aScreenX, aScreenY), aLongTap, aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ClearNativeTouchSequence(nsIObserver* aObserver)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_DispatchToMainThread(NewRunnableMethod<nsIObserver*>
+    (widget, &nsIWidget::ClearNativeTouchSequence, aObserver));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ActivateNativeMenuItemAt(const nsAString& indexString)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  return widget->ActivateNativeMenuItemAt(indexString);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ForceUpdateNativeMenuAt(const nsAString& indexString)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  return widget->ForceUpdateNativeMenuAt(indexString);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetSelectionAsPlaintext(nsAString& aResult)
+{
+  // Get the widget to send the event to.
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return widget->GetSelectionAsPlaintext(aResult);
+}
+
+nsIWidget*
+nsDOMWindowUtils::GetWidget(nsPoint* aOffset)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (window) {
+    nsIDocShell *docShell = window->GetDocShell();
+    if (docShell) {
+      nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
+      return nsContentUtils::GetWidget(presShell, aOffset);
+    }
+  }
+
+  return nullptr;
+}
+
+nsIWidget*
+nsDOMWindowUtils::GetWidgetForElement(nsIDOMElement* aElement)
+{
+  if (!aElement)
+    return GetWidget();
+
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+  nsIDocument* doc = content->GetUncomposedDoc();
+  nsIPresShell* presShell = doc ? doc->GetShell() : nullptr;
+
+  if (presShell) {
+    nsIFrame* frame = content->GetPrimaryFrame();
+    if (!frame) {
+      frame = presShell->GetRootFrame();
+    }
+    if (frame)
+      return frame->GetNearestWidget();
+  }
+
+  return nullptr;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::Focus(nsIDOMElement* aElement)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  nsIFocusManager* fm = nsFocusManager::GetFocusManager();
+  if (fm) {
+    if (aElement)
+      fm->SetFocus(aElement, 0);
+    else
+      fm->ClearFocus(window);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GarbageCollect(nsICycleCollectorListener *aListener,
+                                 int32_t aExtraForgetSkippableCalls)
+{
+  PROFILER_LABEL("nsDOMWindowUtils", "GarbageCollect",
+    js::ProfileEntry::Category::GC);
+
+  nsJSContext::GarbageCollectNow(JS::gcreason::DOM_UTILS);
+  nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::CycleCollect(nsICycleCollectorListener *aListener,
+                               int32_t aExtraForgetSkippableCalls)
+{
+  nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RunNextCollectorTimer()
+{
+  nsJSContext::RunNextCollectorTimer();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendSimpleGestureEvent(const nsAString& aType,
+                                         float aX,
+                                         float aY,
+                                         uint32_t aDirection,
+                                         double aDelta,
+                                         int32_t aModifiers,
+                                         uint32_t aClickCount)
+{
+  // get the widget to send the event to
+  nsPoint offset;
+  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  EventMessage msg;
+  if (aType.EqualsLiteral("MozSwipeGestureMayStart")) {
+    msg = eSwipeGestureMayStart;
+  } else if (aType.EqualsLiteral("MozSwipeGestureStart")) {
+    msg = eSwipeGestureStart;
+  } else if (aType.EqualsLiteral("MozSwipeGestureUpdate")) {
+    msg = eSwipeGestureUpdate;
+  } else if (aType.EqualsLiteral("MozSwipeGestureEnd")) {
+    msg = eSwipeGestureEnd;
+  } else if (aType.EqualsLiteral("MozSwipeGesture")) {
+    msg = eSwipeGesture;
+  } else if (aType.EqualsLiteral("MozMagnifyGestureStart")) {
+    msg = eMagnifyGestureStart;
+  } else if (aType.EqualsLiteral("MozMagnifyGestureUpdate")) {
+    msg = eMagnifyGestureUpdate;
+  } else if (aType.EqualsLiteral("MozMagnifyGesture")) {
+    msg = eMagnifyGesture;
+  } else if (aType.EqualsLiteral("MozRotateGestureStart")) {
+    msg = eRotateGestureStart;
+  } else if (aType.EqualsLiteral("MozRotateGestureUpdate")) {
+    msg = eRotateGestureUpdate;
+  } else if (aType.EqualsLiteral("MozRotateGesture")) {
+    msg = eRotateGesture;
+  } else if (aType.EqualsLiteral("MozTapGesture")) {
+    msg = eTapGesture;
+  } else if (aType.EqualsLiteral("MozPressTapGesture")) {
+    msg = ePressTapGesture;
+  } else if (aType.EqualsLiteral("MozEdgeUIStarted")) {
+    msg = eEdgeUIStarted;
+  } else if (aType.EqualsLiteral("MozEdgeUICanceled")) {
+    msg = eEdgeUICanceled;
+  } else if (aType.EqualsLiteral("MozEdgeUICompleted")) {
+    msg = eEdgeUICompleted;
+  } else {
+    return NS_ERROR_FAILURE;
+  }
+
+  WidgetSimpleGestureEvent event(true, msg, widget);
+  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
+  event.mDirection = aDirection;
+  event.mDelta = aDelta;
+  event.mClickCount = aClickCount;
+  event.mTime = PR_IntervalNow();
+
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext)
+    return NS_ERROR_FAILURE;
+
+  event.mRefPoint =
+    nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
+
+  nsEventStatus status;
+  return widget->DispatchEvent(&event, status);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ElementFromPoint(float aX, float aY,
+                                   bool aIgnoreRootScrollFrame,
+                                   bool aFlushLayout,
+                                   nsIDOMElement** aReturn)
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  Element* el =
+    doc->ElementFromPointHelper(aX, aY, aIgnoreRootScrollFrame, aFlushLayout);
+  nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(el);
+  retval.forget(aReturn);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::NodesFromRect(float aX, float aY,
+                                float aTopSize, float aRightSize,
+                                float aBottomSize, float aLeftSize,
+                                bool aIgnoreRootScrollFrame,
+                                bool aFlushLayout,
+                                nsIDOMNodeList** aReturn)
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  return doc->NodesFromRectHelper(aX, aY, aTopSize, aRightSize, aBottomSize, aLeftSize,
+                                  aIgnoreRootScrollFrame, aFlushLayout, aReturn);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetTranslationNodes(nsIDOMNode* aRoot,
+                                      nsITranslationNodeList** aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+  nsCOMPtr<nsIContent> root = do_QueryInterface(aRoot);
+  NS_ENSURE_STATE(root);
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  if (root->OwnerDoc() != doc) {
+    return NS_ERROR_DOM_WRONG_DOCUMENT_ERR;
+  }
+
+  nsTHashtable<nsPtrHashKey<nsIContent>> translationNodesHash(500);
+  RefPtr<nsTranslationNodeList> list = new nsTranslationNodeList;
+
+  uint32_t limit = 15000;
+
+  // We begin iteration with content->GetNextNode because we want to explictly
+  // skip the root tag from being a translation node.
+  nsIContent* content = root;
+  while ((limit > 0) && (content = content->GetNextNode(root))) {
+    if (!content->IsHTMLElement()) {
+      continue;
+    }
+
+    // Skip elements that usually contain non-translatable text content.
+    if (content->IsAnyOfHTMLElements(nsGkAtoms::script,
+                                     nsGkAtoms::iframe,
+                                     nsGkAtoms::frameset,
+                                     nsGkAtoms::frame,
+                                     nsGkAtoms::code,
+                                     nsGkAtoms::noscript,
+                                     nsGkAtoms::style)) {
+      continue;
+    }
+
+    // An element is a translation node if it contains
+    // at least one text node that has meaningful data
+    // for translation
+    for (nsIContent* child = content->GetFirstChild();
+         child;
+         child = child->GetNextSibling()) {
+
+      if (child->HasTextForTranslation()) {
+        translationNodesHash.PutEntry(content);
+
+        bool isBlockFrame = false;
+        nsIFrame* frame = content->GetPrimaryFrame();
+        if (frame) {
+          isBlockFrame = frame->IsFrameOfType(nsIFrame::eBlockFrame);
+        }
+
+        bool isTranslationRoot = isBlockFrame;
+        if (!isBlockFrame) {
+          // If an element is not a block element, it still
+          // can be considered a translation root if the parent
+          // of this element didn't make into the list of nodes
+          // to be translated.
+          bool parentInList = false;
+          nsIContent* parent = content->GetParent();
+          if (parent) {
+            parentInList = translationNodesHash.Contains(parent);
+          }
+          isTranslationRoot = !parentInList;
+        }
+
+        list->AppendElement(content->AsDOMNode(), isTranslationRoot);
+        --limit;
+        break;
+      }
+    }
+  }
+
+  *aRetVal = list.forget().take();
+  return NS_OK;
+}
+
+static already_AddRefed<DataSourceSurface>
+CanvasToDataSourceSurface(nsIDOMHTMLCanvasElement* aCanvas)
+{
+  nsCOMPtr<nsINode> node = do_QueryInterface(aCanvas);
+  if (!node) {
+    return nullptr;
+  }
+
+  MOZ_ASSERT(node->IsElement(),
+             "An nsINode that implements nsIDOMHTMLCanvasElement should "
+             "be an element.");
+  nsLayoutUtils::SurfaceFromElementResult result =
+    nsLayoutUtils::SurfaceFromElement(node->AsElement());
+
+  MOZ_ASSERT(result.GetSourceSurface());
+  return result.GetSourceSurface()->GetDataSurface();
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::CompareCanvases(nsIDOMHTMLCanvasElement *aCanvas1,
+                                  nsIDOMHTMLCanvasElement *aCanvas2,
+                                  uint32_t* aMaxDifference,
+                                  uint32_t* retVal)
+{
+  if (aCanvas1 == nullptr ||
+      aCanvas2 == nullptr ||
+      retVal == nullptr)
+    return NS_ERROR_FAILURE;
+
+  RefPtr<DataSourceSurface> img1 = CanvasToDataSourceSurface(aCanvas1);
+  RefPtr<DataSourceSurface> img2 = CanvasToDataSourceSurface(aCanvas2);
+
+  DataSourceSurface::ScopedMap map1(img1, DataSourceSurface::READ);
+  DataSourceSurface::ScopedMap map2(img2, DataSourceSurface::READ);
+
+  if (img1 == nullptr || img2 == nullptr ||
+      !map1.IsMapped() || !map2.IsMapped() ||
+      img1->GetSize() != img2->GetSize() ||
+      map1.GetStride() != map2.GetStride()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  int v;
+  IntSize size = img1->GetSize();
+  int32_t stride = map1.GetStride();
+
+  // we can optimize for the common all-pass case
+  if (stride == size.width * 4) {
+    v = memcmp(map1.GetData(), map2.GetData(), size.width * size.height * 4);
+    if (v == 0) {
+      if (aMaxDifference)
+        *aMaxDifference = 0;
+      *retVal = 0;
+      return NS_OK;
+    }
+  }
+
+  uint32_t dc = 0;
+  uint32_t different = 0;
+
+  for (int j = 0; j < size.height; j++) {
+    unsigned char *p1 = map1.GetData() + j*stride;
+    unsigned char *p2 = map2.GetData() + j*stride;
+    v = memcmp(p1, p2, stride);
+
+    if (v) {
+      for (int i = 0; i < size.width; i++) {
+        if (*(uint32_t*) p1 != *(uint32_t*) p2) {
+
+          different++;
+
+          dc = std::max((uint32_t)abs(p1[0] - p2[0]), dc);
+          dc = std::max((uint32_t)abs(p1[1] - p2[1]), dc);
+          dc = std::max((uint32_t)abs(p1[2] - p2[2]), dc);
+          dc = std::max((uint32_t)abs(p1[3] - p2[3]), dc);
+        }
+
+        p1 += 4;
+        p2 += 4;
+      }
+    }
+  }
+
+  if (aMaxDifference)
+    *aMaxDifference = dc;
+
+  *retVal = different;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsMozAfterPaintPending(bool *aResult)
+{
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = false;
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext)
+    return NS_OK;
+  *aResult = presContext->IsDOMPaintEventPending();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ClearMozAfterPaintEvents()
+{
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext)
+    return NS_OK;
+  presContext->ClearMozAfterPaintEvents();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::DisableNonTestMouseEvents(bool aDisable)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+  nsIDocShell *docShell = window->GetDocShell();
+  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
+  nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
+  NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+  presShell->DisableNonTestMouseEvents(aDisable);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SuppressEventHandling(bool aSuppress)
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  if (aSuppress) {
+    doc->SuppressEventHandling(nsIDocument::eEvents);
+  } else {
+    doc->UnsuppressEventHandlingAndFireEvents(nsIDocument::eEvents, true);
+  }
+
+  return NS_OK;
+}
+
+static nsresult
+getScrollXYAppUnits(nsWeakPtr aWindow, bool aFlushLayout, nsPoint& aScrollPos) {
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(aWindow);
+  nsCOMPtr<nsIDocument> doc = window ? window->GetExtantDoc() : nullptr;
+  NS_ENSURE_STATE(doc);
+
+  if (aFlushLayout) {
+    doc->FlushPendingNotifications(Flush_Layout);
+  }
+
+  nsIPresShell *presShell = doc->GetShell();
+  if (presShell) {
+    nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
+    if (sf) {
+      aScrollPos = sf->GetScrollPosition();
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetScrollXY(bool aFlushLayout, int32_t* aScrollX, int32_t* aScrollY)
+{
+  nsPoint scrollPos(0,0);
+  nsresult rv = getScrollXYAppUnits(mWindow, aFlushLayout, scrollPos);
+  NS_ENSURE_SUCCESS(rv, rv);
+  *aScrollX = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.x);
+  *aScrollY = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.y);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetScrollXYFloat(bool aFlushLayout, float* aScrollX, float* aScrollY)
+{
+  nsPoint scrollPos(0,0);
+  nsresult rv = getScrollXYAppUnits(mWindow, aFlushLayout, scrollPos);
+  NS_ENSURE_SUCCESS(rv, rv);
+  *aScrollX = nsPresContext::AppUnitsToFloatCSSPixels(scrollPos.x);
+  *aScrollY = nsPresContext::AppUnitsToFloatCSSPixels(scrollPos.y);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetScrollbarSize(bool aFlushLayout, int32_t* aWidth,
+                                                      int32_t* aHeight)
+{
+  *aWidth = 0;
+  *aHeight = 0;
+
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  if (aFlushLayout) {
+    doc->FlushPendingNotifications(Flush_Layout);
+  }
+
+  nsIPresShell* presShell = doc->GetShell();
+  NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_AVAILABLE);
+
+  nsIScrollableFrame* scrollFrame = presShell->GetRootScrollFrameAsScrollable();
+  NS_ENSURE_TRUE(scrollFrame, NS_OK);
+
+  nsMargin sizes = scrollFrame->GetActualScrollbarSizes();
+  *aWidth = nsPresContext::AppUnitsToIntCSSPixels(sizes.LeftRight());
+  *aHeight = nsPresContext::AppUnitsToIntCSSPixels(sizes.TopBottom());
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetBoundsWithoutFlushing(nsIDOMElement *aElement,
+                                           nsIDOMClientRect** aResult)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  nsresult rv;
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  RefPtr<DOMRect> rect = new DOMRect(window);
+  nsIFrame* frame = content->GetPrimaryFrame();
+
+  if (frame) {
+    nsRect r = nsLayoutUtils::GetAllInFlowRectsUnion(frame,
+               nsLayoutUtils::GetContainingBlockForClientRect(frame),
+               nsLayoutUtils::RECTS_ACCOUNT_FOR_TRANSFORMS);
+    rect->SetLayoutRect(r);
+  }
+
+  rect.forget(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetRootBounds(nsIDOMClientRect** aResult)
+{
+  nsIDocument* doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  nsRect bounds(0, 0, 0, 0);
+  nsIPresShell* presShell = doc->GetShell();
+  if (presShell) {
+    nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
+    if (sf) {
+      bounds = sf->GetScrollRange();
+      bounds.width += sf->GetScrollPortRect().width;
+      bounds.height += sf->GetScrollPortRect().height;
+    } else if (presShell->GetRootFrame()) {
+      bounds = presShell->GetRootFrame()->GetRect();
+    }
+  }
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  RefPtr<DOMRect> rect = new DOMRect(window);
+  rect->SetRect(nsPresContext::AppUnitsToFloatCSSPixels(bounds.x),
+                nsPresContext::AppUnitsToFloatCSSPixels(bounds.y),
+                nsPresContext::AppUnitsToFloatCSSPixels(bounds.width),
+                nsPresContext::AppUnitsToFloatCSSPixels(bounds.height));
+  rect.forget(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIMEIsOpen(bool *aState)
+{
+  NS_ENSURE_ARG_POINTER(aState);
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  // Open state should not be available when IME is not enabled.
+  InputContext context = widget->GetInputContext();
+  if (context.mIMEState.mEnabled != IMEState::ENABLED) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  if (context.mIMEState.mOpen == IMEState::OPEN_STATE_NOT_SUPPORTED) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+  *aState = (context.mIMEState.mOpen == IMEState::OPEN);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIMEStatus(uint32_t *aState)
+{
+  NS_ENSURE_ARG_POINTER(aState);
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  InputContext context = widget->GetInputContext();
+  *aState = static_cast<uint32_t>(context.mIMEState.mEnabled);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFocusedInputType(char** aType)
+{
+  NS_ENSURE_ARG_POINTER(aType);
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  InputContext context = widget->GetInputContext();
+  *aType = ToNewCString(context.mHTMLInputType);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetViewId(nsIDOMElement* aElement, nsViewID* aResult)
+{
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
+  if (content && nsLayoutUtils::FindIDFor(content, aResult)) {
+    return NS_OK;
+  }
+  return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetScreenPixelsPerCSSPixel(float* aScreenPixels)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+  *aScreenPixels = window->GetDevicePixelRatio(CallerType::System);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFullZoom(float* aFullZoom)
+{
+  *aFullZoom = 1.0f;
+
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_OK;
+  }
+
+  *aFullZoom = presContext->DeviceContext()->GetFullZoom();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::DispatchDOMEventViaPresShell(nsIDOMNode* aTarget,
+                                               nsIDOMEvent* aEvent,
+                                               bool aTrusted,
+                                               bool* aRetVal)
+{
+  NS_ENSURE_STATE(aEvent);
+  aEvent->SetTrusted(aTrusted);
+  WidgetEvent* internalEvent = aEvent->WidgetEventPtr();
+  NS_ENSURE_STATE(internalEvent);
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aTarget);
+  NS_ENSURE_STATE(content);
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (content->OwnerDoc()->GetWindow() != window) {
+    return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
+  }
+  nsCOMPtr<nsIDocument> targetDoc = content->GetUncomposedDoc();
+  NS_ENSURE_STATE(targetDoc);
+  RefPtr<nsIPresShell> targetShell = targetDoc->GetShell();
+  NS_ENSURE_STATE(targetShell);
+
+  targetDoc->FlushPendingNotifications(Flush_Layout);
+
+  nsEventStatus status = nsEventStatus_eIgnore;
+  targetShell->HandleEventWithTarget(internalEvent, nullptr, content, &status);
+  *aRetVal = (status != nsEventStatus_eConsumeNoDefault);
+  return NS_OK;
+}
+
+static void
+InitEvent(WidgetGUIEvent& aEvent, LayoutDeviceIntPoint* aPt = nullptr)
+{
+  if (aPt) {
+    aEvent.mRefPoint = *aPt;
+  }
+  aEvent.mTime = PR_IntervalNow();
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendQueryContentEvent(uint32_t aType,
+                                        int64_t aOffset, uint32_t aLength,
+                                        int32_t aX, int32_t aY,
+                                        uint32_t aAdditionalFlags,
+                                        nsIQueryContentEventResult **aResult)
+{
+  *aResult = nullptr;
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsIDocShell *docShell = window->GetDocShell();
+  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
+  NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+  nsPresContext* presContext = presShell->GetPresContext();
+  NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
+
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  EventMessage message;
+  switch (aType) {
+    case QUERY_SELECTED_TEXT:
+      message = eQuerySelectedText;
+      break;
+    case QUERY_TEXT_CONTENT:
+      message = eQueryTextContent;
+      break;
+    case QUERY_CARET_RECT:
+      message = eQueryCaretRect;
+      break;
+    case QUERY_TEXT_RECT:
+      message = eQueryTextRect;
+      break;
+    case QUERY_EDITOR_RECT:
+      message = eQueryEditorRect;
+      break;
+    case QUERY_CHARACTER_AT_POINT:
+      message = eQueryCharacterAtPoint;
+      break;
+    case QUERY_TEXT_RECT_ARRAY:
+      message = eQueryTextRectArray;
+      break;
+    default:
+      return NS_ERROR_INVALID_ARG;
+  }
+
+  SelectionType selectionType = SelectionType::eNormal;
+  static const uint32_t kSelectionFlags =
+    QUERY_CONTENT_FLAG_SELECTION_SPELLCHECK |
+    QUERY_CONTENT_FLAG_SELECTION_IME_RAWINPUT |
+    QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDRAWTEXT |
+    QUERY_CONTENT_FLAG_SELECTION_IME_CONVERTEDTEXT |
+    QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDCONVERTEDTEXT |
+    QUERY_CONTENT_FLAG_SELECTION_ACCESSIBILITY |
+    QUERY_CONTENT_FLAG_SELECTION_FIND |
+    QUERY_CONTENT_FLAG_SELECTION_URLSECONDARY |
+    QUERY_CONTENT_FLAG_SELECTION_URLSTRIKEOUT;
+  switch (aAdditionalFlags & kSelectionFlags) {
+    case QUERY_CONTENT_FLAG_SELECTION_SPELLCHECK:
+      selectionType = SelectionType::eSpellCheck;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_IME_RAWINPUT:
+      selectionType = SelectionType::eIMERawClause;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDRAWTEXT:
+      selectionType = SelectionType::eIMESelectedRawClause;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_IME_CONVERTEDTEXT:
+      selectionType = SelectionType::eIMEConvertedClause;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDCONVERTEDTEXT:
+      selectionType = SelectionType::eIMESelectedClause;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_ACCESSIBILITY:
+      selectionType = SelectionType::eAccessibility;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_FIND:
+      selectionType = SelectionType::eFind;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_URLSECONDARY:
+      selectionType = SelectionType::eURLSecondary;
+      break;
+    case QUERY_CONTENT_FLAG_SELECTION_URLSTRIKEOUT:
+      selectionType = SelectionType::eURLStrikeout;
+      break;
+    case 0:
+      break;
+    default:
+      return NS_ERROR_INVALID_ARG;
+  }
+
+  if (selectionType != SelectionType::eNormal &&
+      message != eQuerySelectedText) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsCOMPtr<nsIWidget> targetWidget = widget;
+  LayoutDeviceIntPoint pt(aX, aY);
+
+  WidgetQueryContentEvent::Options options;
+  options.mUseNativeLineBreak =
+    !(aAdditionalFlags & QUERY_CONTENT_FLAG_USE_XP_LINE_BREAK);
+  options.mRelativeToInsertionPoint =
+    (aAdditionalFlags &
+       QUERY_CONTENT_FLAG_OFFSET_RELATIVE_TO_INSERTION_POINT) != 0;
+  if (options.mRelativeToInsertionPoint) {
+    switch (message) {
+      case eQueryTextContent:
+      case eQueryCaretRect:
+      case eQueryTextRect:
+        break;
+      default:
+        return NS_ERROR_INVALID_ARG;
+    }
+  } else if (aOffset < 0) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (message == eQueryCharacterAtPoint) {
+    // Looking for the widget at the point.
+    WidgetQueryContentEvent dummyEvent(true, eQueryContentState, widget);
+    dummyEvent.Init(options);
+    InitEvent(dummyEvent, &pt);
+    nsIFrame* popupFrame =
+      nsLayoutUtils::GetPopupFrameForEventCoordinates(presContext->GetRootPresContext(), &dummyEvent);
+
+    LayoutDeviceIntRect widgetBounds = widget->GetClientBounds();
+    widgetBounds.MoveTo(0, 0);
+
+    // There is no popup frame at the point and the point isn't in our widget,
+    // we cannot process this request.
+    NS_ENSURE_TRUE(popupFrame || widgetBounds.Contains(pt), NS_ERROR_FAILURE);
+
+    // Fire the event on the widget at the point
+    if (popupFrame) {
+      targetWidget = popupFrame->GetNearestWidget();
+    }
+  }
+
+  pt += widget->WidgetToScreenOffset() - targetWidget->WidgetToScreenOffset();
+
+  WidgetQueryContentEvent queryEvent(true, message, targetWidget);
+  InitEvent(queryEvent, &pt);
+
+  switch (message) {
+    case eQueryTextContent:
+      queryEvent.InitForQueryTextContent(aOffset, aLength, options);
+      break;
+    case eQueryCaretRect:
+      queryEvent.InitForQueryCaretRect(aOffset, options);
+      break;
+    case eQueryTextRect:
+      queryEvent.InitForQueryTextRect(aOffset, aLength, options);
+      break;
+    case eQuerySelectedText:
+      queryEvent.InitForQuerySelectedText(selectionType, options);
+      break;
+    case eQueryTextRectArray:
+      queryEvent.InitForQueryTextRectArray(aOffset, aLength, options);
+      break;
+    default:
+      queryEvent.Init(options);
+      break;
+  }
+
+  nsEventStatus status;
+  nsresult rv = targetWidget->DispatchEvent(&queryEvent, status);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsQueryContentEventResult* result = new nsQueryContentEventResult();
+  result->SetEventResult(widget, queryEvent);
+  NS_ADDREF(*aResult = result);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendSelectionSetEvent(uint32_t aOffset,
+                                        uint32_t aLength,
+                                        uint32_t aAdditionalFlags,
+                                        bool *aResult)
+{
+  *aResult = false;
+
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+
+  WidgetSelectionEvent selectionEvent(true, eSetSelection, widget);
+  InitEvent(selectionEvent);
+
+  selectionEvent.mOffset = aOffset;
+  selectionEvent.mLength = aLength;
+  selectionEvent.mReversed = (aAdditionalFlags & SELECTION_SET_FLAG_REVERSE);
+  selectionEvent.mUseNativeLineBreak =
+    !(aAdditionalFlags & SELECTION_SET_FLAG_USE_XP_LINE_BREAK);
+
+  nsEventStatus status;
+  nsresult rv = widget->DispatchEvent(&selectionEvent, status);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  *aResult = selectionEvent.mSucceeded;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SendContentCommandEvent(const nsAString& aType,
+                                          nsITransferable * aTransferable)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  EventMessage msg;
+  if (aType.EqualsLiteral("cut")) {
+    msg = eContentCommandCut;
+  } else if (aType.EqualsLiteral("copy")) {
+    msg = eContentCommandCopy;
+  } else if (aType.EqualsLiteral("paste")) {
+    msg = eContentCommandPaste;
+  } else if (aType.EqualsLiteral("delete")) {
+    msg = eContentCommandDelete;
+  } else if (aType.EqualsLiteral("undo")) {
+    msg = eContentCommandUndo;
+  } else if (aType.EqualsLiteral("redo")) {
+    msg = eContentCommandRedo;
+  } else if (aType.EqualsLiteral("pasteTransferable")) {
+    msg = eContentCommandPasteTransferable;
+  } else {
+    return NS_ERROR_FAILURE;
+  }
+
+  WidgetContentCommandEvent event(true, msg, widget);
+  if (msg == eContentCommandPasteTransferable) {
+    event.mTransferable = aTransferable;
+  }
+
+  nsEventStatus status;
+  return widget->DispatchEvent(&event, status);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetClassName(JS::Handle<JS::Value> aObject, JSContext* aCx,
+                               char** aName)
+{
+  // Our argument must be a non-null object.
+  if (aObject.isPrimitive()) {
+    return NS_ERROR_XPC_BAD_CONVERT_JS;
+  }
+
+  *aName = NS_strdup(JS_GetClass(aObject.toObjectOrNull())->name);
+  MOZ_ASSERT(*aName, "NS_strdup should be infallible.");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetVisitedDependentComputedStyle(
+                    nsIDOMElement *aElement, const nsAString& aPseudoElement,
+                    const nsAString& aPropertyName, nsAString& aResult)
+{
+  aResult.Truncate();
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  nsCOMPtr<Element> element = do_QueryInterface(aElement);
+  NS_ENSURE_STATE(window && element);
+  nsCOMPtr<nsPIDOMWindowInner> innerWindow = window->GetCurrentInnerWindow();
+  NS_ENSURE_STATE(window);
+
+  nsCOMPtr<nsIDOMCSSStyleDeclaration> decl;
+  {
+    ErrorResult rv;
+    decl = innerWindow->GetComputedStyle(*element, aPseudoElement, rv);
+    ENSURE_SUCCESS(rv, rv.StealNSResult());
+  }
+
+  static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(true);
+  nsresult rv = decl->GetPropertyValue(aPropertyName, aResult);
+  static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(false);
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::EnterModalState()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->EnterModalState();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::LeaveModalState()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->LeaveModalState();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::IsInModalState(bool *retval)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  *retval = nsGlobalWindow::Cast(window)->IsInModalState();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetDesktopModeViewport(bool aDesktopMode)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->SetDesktopModeViewport(aDesktopMode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetOuterWindowID(uint64_t *aWindowID)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  NS_ASSERTION(window->IsOuterWindow(), "How did that happen?");
+  *aWindowID = window->WindowID();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetCurrentInnerWindowID(uint64_t *aWindowID)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_NOT_AVAILABLE);
+
+  NS_ASSERTION(window->IsOuterWindow(), "How did that happen?");
+  nsGlobalWindow* inner =
+    nsGlobalWindow::Cast(window)->GetCurrentInnerWindowInternal();
+  if (!inner) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+  *aWindowID = inner->WindowID();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SuspendTimeouts()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsPIDOMWindowInner> inner = window->GetCurrentInnerWindow();
+  NS_ENSURE_TRUE(inner, NS_ERROR_FAILURE);
+
+  inner->Suspend();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ResumeTimeouts()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsPIDOMWindowInner> inner = window->GetCurrentInnerWindow();
+  NS_ENSURE_TRUE(inner, NS_ERROR_FAILURE);
+
+  inner->Resume();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetLayerManagerType(nsAString& aType)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  LayerManager *mgr = widget->GetLayerManager(nsIWidget::LAYER_MANAGER_PERSISTENT);
+  if (!mgr)
+    return NS_ERROR_FAILURE;
+
+  mgr->GetBackendName(aType);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetLayerManagerRemote(bool* retval)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  LayerManager *mgr = widget->GetLayerManager();
+  if (!mgr)
+    return NS_ERROR_FAILURE;
+
+  *retval = !!mgr->AsShadowForwarder();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetSupportsHardwareH264Decoding(JS::MutableHandle<JS::Value> aPromise)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+  nsCOMPtr<nsIGlobalObject> parentObject =
+    do_QueryInterface(window->GetCurrentInnerWindow());
+  NS_ENSURE_STATE(parentObject);
+#ifdef MOZ_FMP4
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  NS_ENSURE_STATE(widget);
+  LayerManager *mgr = widget->GetLayerManager();
+  NS_ENSURE_STATE(mgr);
+  RefPtr<Promise> promise =
+    MP4Decoder::IsVideoAccelerated(mgr->AsShadowForwarder(), parentObject);
+  NS_ENSURE_STATE(promise);
+  aPromise.setObject(*promise->PromiseObj());
+#else
+  ErrorResult rv;
+  RefPtr<Promise> promise = Promise::Create(parentObject, rv);
+  if (rv.Failed()) {
+    return rv.StealNSResult();
+  }
+  promise->MaybeResolve(NS_LITERAL_STRING("No; Compiled without MP4 support."));
+  aPromise.setObject(*promise->PromiseObj());
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetCurrentAudioBackend(nsAString& aBackend)
+{
+  CubebUtils::GetCurrentBackend(aBackend);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::StartFrameTimeRecording(uint32_t *startIndex)
+{
+  NS_ENSURE_ARG_POINTER(startIndex);
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  LayerManager *mgr = widget->GetLayerManager();
+  if (!mgr)
+    return NS_ERROR_FAILURE;
+
+  const uint32_t kRecordingMinSize = 60 * 10; // 10 seconds @60 fps.
+  const uint32_t kRecordingMaxSize = 60 * 60 * 60; // One hour
+  uint32_t bufferSize = Preferences::GetUint("toolkit.framesRecording.bufferSize", uint32_t(0));
+  bufferSize = std::min(bufferSize, kRecordingMaxSize);
+  bufferSize = std::max(bufferSize, kRecordingMinSize);
+  *startIndex = mgr->StartFrameTimeRecording(bufferSize);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::StopFrameTimeRecording(uint32_t   startIndex,
+                                         uint32_t  *frameCount,
+                                         float    **frameIntervals)
+{
+  NS_ENSURE_ARG_POINTER(frameCount);
+  NS_ENSURE_ARG_POINTER(frameIntervals);
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  LayerManager *mgr = widget->GetLayerManager();
+  if (!mgr)
+    return NS_ERROR_FAILURE;
+
+  nsTArray<float> tmpFrameIntervals;
+  mgr->StopFrameTimeRecording(startIndex, tmpFrameIntervals);
+  *frameCount = tmpFrameIntervals.Length();
+
+  *frameIntervals = (float*)moz_xmalloc(*frameCount * sizeof(float));
+
+  /* copy over the frame intervals and paint times into the arrays we just allocated */
+  for (uint32_t i = 0; i < *frameCount; i++) {
+    (*frameIntervals)[i] = tmpFrameIntervals[i];
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::BeginTabSwitch()
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  LayerManager *mgr = widget->GetLayerManager();
+  if (!mgr)
+    return NS_ERROR_FAILURE;
+
+  mgr->BeginTabSwitch();
+
+  return NS_OK;
+}
+
+static bool
+ComputeAnimationValue(nsCSSPropertyID aProperty,
+                      Element* aElement,
+                      const nsAString& aInput,
+                      StyleAnimationValue& aOutput)
+{
+  nsIDocument* doc = aElement->GetUncomposedDoc();
+  nsIPresShell* shell = doc->GetShell();
+  if (!shell) {
+    return false;
+  }
+
+  RefPtr<nsStyleContext> styleContext =
+    nsComputedDOMStyle::GetStyleContextForElement(aElement, nullptr, shell);
+
+  if (!StyleAnimationValue::ComputeValue(aProperty, aElement, styleContext,
+                                         aInput, false, aOutput)) {
+    return false;
+  }
+  return true;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::AdvanceTimeAndRefresh(int64_t aMilliseconds)
+{
+  // Before we advance the time, we should trigger any animations that are
+  // waiting to start. This is because there are many tests that call this
+  // which expect animations to start immediately. Ideally, we should make
+  // all these tests do an asynchronous wait on the corresponding animation's
+  // 'ready' promise before continuing. Then we could remove the special
+  // handling here and the code path followed when testing would more closely
+  // match the code path during regular operation. Filed as bug 1112957.
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  if (doc) {
+    PendingAnimationTracker* tracker = doc->GetPendingAnimationTracker();
+    if (tracker) {
+      tracker->TriggerPendingAnimationsNow();
+    }
+  }
+
+  nsPresContext* presContext = GetPresContext();
+  if (presContext) {
+    nsRefreshDriver* driver = presContext->RefreshDriver();
+    driver->AdvanceTimeAndRefresh(aMilliseconds);
+
+    RefPtr<LayerTransactionChild> transaction = GetLayerTransaction();
+    if (transaction && transaction->IPCOpen()) {
+      transaction->SendSetTestSampleTime(driver->MostRecentRefresh());
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetLastTransactionId(uint64_t *aLastTransactionId)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  nsRefreshDriver* driver = presContext->GetRootPresContext()->RefreshDriver();
+  *aLastTransactionId = driver->LastTransactionId();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RestoreNormalRefresh()
+{
+  // Kick the compositor out of test mode before the refresh driver, so that
+  // the refresh driver doesn't send an update that gets ignored by the
+  // compositor.
+  RefPtr<LayerTransactionChild> transaction = GetLayerTransaction();
+  if (transaction && transaction->IPCOpen()) {
+    transaction->SendLeaveTestMode();
+  }
+
+  if (nsPresContext* pc = GetPresContext()) {
+    nsRefreshDriver* driver = pc->RefreshDriver();
+    driver->RestoreNormalRefresh();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsTestControllingRefreshes(bool *aResult)
+{
+  nsPresContext* pc = GetPresContext();
+  *aResult =
+    pc ? pc->RefreshDriver()->IsTestControllingRefreshesEnabled() : false;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetAsyncPanZoomEnabled(bool *aResult)
+{
+  nsIWidget* widget = GetWidget();
+  if (widget) {
+    *aResult = widget->AsyncPanZoomEnabled();
+  } else {
+    *aResult = gfxPlatform::AsyncPanZoomEnabled();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetAsyncScrollOffset(nsIDOMNode* aNode,
+                                       float aX, float aY)
+{
+  nsCOMPtr<Element> element = do_QueryInterface(aNode);
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  FrameMetrics::ViewID viewId;
+  if (!nsLayoutUtils::FindIDFor(element, &viewId)) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+  LayerManager* manager = widget->GetLayerManager();
+  if (!manager) {
+    return NS_ERROR_FAILURE;
+  }
+  ShadowLayerForwarder* forwarder = manager->AsShadowForwarder();
+  if (!forwarder || !forwarder->HasShadowManager()) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  forwarder->GetShadowManager()->SendSetAsyncScrollOffset(viewId, aX, aY);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetAsyncZoom(nsIDOMNode* aRootElement, float aValue)
+{
+  nsCOMPtr<Element> element = do_QueryInterface(aRootElement);
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  FrameMetrics::ViewID viewId;
+  if (!nsLayoutUtils::FindIDFor(element, &viewId)) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_FAILURE;
+  }
+  LayerManager* manager = widget->GetLayerManager();
+  if (!manager) {
+    return NS_ERROR_FAILURE;
+  }
+  ShadowLayerForwarder* forwarder = manager->AsShadowForwarder();
+  if (!forwarder || !forwarder->HasShadowManager()) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  forwarder->GetShadowManager()->SendSetAsyncZoom(viewId, aValue);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::FlushApzRepaints(bool* aOutResult)
+{
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    *aOutResult = false;
+    return NS_OK;
+  }
+  // If APZ is not enabled, this function is a no-op.
+  if (!widget->AsyncPanZoomEnabled()) {
+    *aOutResult = false;
+    return NS_OK;
+  }
+  LayerManager* manager = widget->GetLayerManager();
+  if (!manager) {
+    *aOutResult = false;
+    return NS_OK;
+  }
+  ShadowLayerForwarder* forwarder = manager->AsShadowForwarder();
+  if (!forwarder || !forwarder->HasShadowManager()) {
+    *aOutResult = false;
+    return NS_OK;
+  }
+  forwarder->GetShadowManager()->SendFlushApzRepaints();
+  *aOutResult = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ZoomToFocusedInput()
+{
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    return NS_OK;
+  }
+  // If APZ is not enabled, this function is a no-op.
+  if (!widget->AsyncPanZoomEnabled()) {
+    return NS_OK;
+  }
+
+  nsFocusManager* fm = nsFocusManager::GetFocusManager();
+  if (!fm) {
+    return NS_OK;
+  }
+
+  nsIContent* content = fm->GetFocusedContent();
+  if (!content) {
+    return NS_OK;
+  }
+
+  nsIPresShell* shell = APZCCallbackHelper::GetRootContentDocumentPresShellForContent(content);
+  if (!shell) {
+    return NS_OK;
+  }
+
+  nsIScrollableFrame* rootScrollFrame = shell->GetRootScrollFrameAsScrollable();
+  if (!rootScrollFrame) {
+    return NS_OK;
+  }
+
+  nsIDocument* document = shell->GetDocument();
+  if (!document) {
+    return NS_OK;
+  }
+
+  uint32_t presShellId;
+  FrameMetrics::ViewID viewId;
+  if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(document->GetDocumentElement(), &presShellId, &viewId)) {
+    uint32_t flags = layers::DISABLE_ZOOM_OUT;
+    if (!Preferences::GetBool("formhelper.autozoom")) {
+      flags |= layers::PAN_INTO_VIEW_ONLY;
+    } else {
+      flags |= layers::ONLY_ZOOM_TO_DEFAULT_SCALE;
+    }
+
+    CSSRect bounds = nsLayoutUtils::GetBoundingContentRect(content, rootScrollFrame);
+    if (bounds.IsEmpty()) {
+      // Do not zoom on empty bounds. Bail out.
+      return NS_OK;
+    }
+    bounds.Inflate(15.0f, 0.0f);
+    widget->ZoomToRect(presShellId, viewId, bounds, flags);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ComputeAnimationDistance(nsIDOMElement* aElement,
+                                           const nsAString& aProperty,
+                                           const nsAString& aValue1,
+                                           const nsAString& aValue2,
+                                           double* aResult)
+{
+  nsresult rv;
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCSSPropertyID property =
+    nsCSSProps::LookupProperty(aProperty, CSSEnabledState::eIgnoreEnabledState);
+  if (property != eCSSProperty_UNKNOWN && nsCSSProps::IsShorthand(property)) {
+    property = eCSSProperty_UNKNOWN;
+  }
+
+  MOZ_ASSERT(property == eCSSProperty_UNKNOWN ||
+             !nsCSSProps::IsShorthand(property),
+             "should not have shorthand");
+
+  StyleAnimationValue v1, v2;
+  Element* element = content->AsElement();
+  if (property == eCSSProperty_UNKNOWN ||
+      !ComputeAnimationValue(property, element, aValue1, v1) ||
+      !ComputeAnimationValue(property, element, aValue2, v2)) {
+    return NS_ERROR_ILLEGAL_VALUE;
+  }
+
+  nsIPresShell* shell = element->GetUncomposedDoc()->GetShell();
+  RefPtr<nsStyleContext> styleContext = shell
+    ? nsComputedDOMStyle::GetStyleContextForElement(element, nullptr, shell)
+    : nullptr;
+  if (!StyleAnimationValue::ComputeDistance(property, v1, v2, styleContext,
+                                            *aResult)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsDOMWindowUtils::RenderDocument(const nsRect& aRect,
+                                 uint32_t aFlags,
+                                 nscolor aBackgroundColor,
+                                 gfxContext* aThebesContext)
+{
+    nsCOMPtr<nsIDocument> doc = GetDocument();
+    NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+    // Get Primary Shell
+    nsCOMPtr<nsIPresShell> presShell = doc->GetShell();
+    NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+    // Render Document
+    return presShell->RenderDocument(aRect, aFlags, aBackgroundColor, aThebesContext);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetCursorType(int16_t *aCursor)
+{
+  NS_ENSURE_ARG_POINTER(aCursor);
+
+  nsIDocument* doc = GetDocument();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  bool isSameDoc = false;
+  do {
+    if (EventStateManager::sMouseOverDocument == doc) {
+      isSameDoc = true;
+      break;
+    }
+  } while ((doc = doc->GetParentDocument()));
+
+  if (!isSameDoc) {
+    *aCursor = eCursor_none;
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  // fetch cursor value from window's widget
+  *aCursor = widget->GetCursor();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetDisplayDPI(float *aDPI)
+{
+  nsCOMPtr<nsIWidget> widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  *aDPI = widget->GetDPI();
+
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetOuterWindowWithId(uint64_t aWindowID,
+                                       nsIDOMWindow** aWindow)
+{
+  // XXX This method is deprecated.  See bug 865664.
+  nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
+                                  NS_LITERAL_CSTRING("DOM"),
+                                  nsContentUtils::GetDocumentFromCaller(),
+                                  nsContentUtils::eDOM_PROPERTIES,
+                                  "GetWindowWithOuterIdWarning");
+
+  *aWindow = nsGlobalWindow::GetOuterWindowWithId(aWindowID);
+  NS_IF_ADDREF(*aWindow);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetContainerElement(nsIDOMElement** aResult)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  nsCOMPtr<nsIDOMElement> element =
+    do_QueryInterface(window->GetFrameElementInternal());
+
+  element.forget(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::WrapDOMFile(nsIFile *aFile,
+                              nsISupports **aDOMFile)
+{
+  if (!aFile) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  nsPIDOMWindowInner* innerWindow = window->GetCurrentInnerWindow();
+  if (!innerWindow) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIDOMBlob> blob = File::CreateFromFile(innerWindow, aFile);
+  blob.forget(aDOMFile);
+  return NS_OK;
+}
+
+#ifdef DEBUG
+static bool
+CheckLeafLayers(Layer* aLayer, const nsIntPoint& aOffset, nsIntRegion* aCoveredRegion)
+{
+  gfx::Matrix transform;
+  if (!aLayer->GetTransform().Is2D(&transform) ||
+      transform.HasNonIntegerTranslation())
+    return false;
+  transform.NudgeToIntegers();
+  IntPoint offset = aOffset + IntPoint::Truncate(transform._31, transform._32);
+
+  Layer* child = aLayer->GetFirstChild();
+  if (child) {
+    while (child) {
+      if (!CheckLeafLayers(child, offset, aCoveredRegion))
+        return false;
+      child = child->GetNextSibling();
+    }
+  } else {
+    nsIntRegion rgn = aLayer->GetVisibleRegion().ToUnknownRegion();
+    rgn.MoveBy(offset);
+    nsIntRegion tmp;
+    tmp.And(rgn, *aCoveredRegion);
+    if (!tmp.IsEmpty())
+      return false;
+    aCoveredRegion->Or(*aCoveredRegion, rgn);
+  }
+
+  return true;
+}
+#endif
+
+NS_IMETHODIMP
+nsDOMWindowUtils::LeafLayersPartitionWindow(bool* aResult)
+{
+  *aResult = true;
+#ifdef DEBUG
+  nsIWidget* widget = GetWidget();
+  if (!widget)
+    return NS_ERROR_FAILURE;
+  LayerManager* manager = widget->GetLayerManager();
+  if (!manager)
+    return NS_ERROR_FAILURE;
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext)
+    return NS_ERROR_FAILURE;
+  Layer* root = manager->GetRoot();
+  if (!root)
+    return NS_ERROR_FAILURE;
+
+  nsIntPoint offset(0, 0);
+  nsIntRegion coveredRegion;
+  if (!CheckLeafLayers(root, offset, &coveredRegion)) {
+    *aResult = false;
+  }
+  if (!coveredRegion.IsEqual(root->GetVisibleRegion().ToUnknownRegion())) {
+    *aResult = false;
+  }
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::CheckAndClearPaintedState(nsIDOMElement* aElement, bool* aResult)
+{
+  if (!aElement) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsresult rv;
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsIFrame* frame = content->GetPrimaryFrame();
+
+  if (!frame) {
+    *aResult = false;
+    return NS_OK;
+  }
+
+  // Get the outermost frame for the content node, so that we can test
+  // canvasframe invalidations by observing the documentElement.
+  for (;;) {
+    nsIFrame* parentFrame = frame->GetParent();
+    if (parentFrame && parentFrame->GetContent() == content) {
+      frame = parentFrame;
+    } else {
+      break;
+    }
+  }
+
+  *aResult = frame->CheckAndClearPaintedState();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::IsPartOfOpaqueLayer(nsIDOMElement* aElement, bool* aResult)
+{
+  if (!aElement) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsresult rv;
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsIFrame* frame = content->GetPrimaryFrame();
+  if (!frame) {
+    return NS_ERROR_FAILURE;
+  }
+
+  PaintedLayer* layer = FrameLayerBuilder::GetDebugSingleOldPaintedLayerForFrame(frame);
+  if (!layer) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aResult = (layer->GetContentFlags() & Layer::CONTENT_OPAQUE);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::NumberOfAssignedPaintedLayers(nsIDOMElement** aElements,
+                                                uint32_t aCount,
+                                                uint32_t* aResult)
+{
+  if (!aElements) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsTHashtable<nsPtrHashKey<PaintedLayer>> layers;
+  nsresult rv;
+  for (uint32_t i = 0; i < aCount; i++) {
+    nsCOMPtr<nsIContent> content = do_QueryInterface(aElements[i], &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsIFrame* frame = content->GetPrimaryFrame();
+    if (!frame) {
+      return NS_ERROR_FAILURE;
+    }
+
+    PaintedLayer* layer = FrameLayerBuilder::GetDebugSingleOldPaintedLayerForFrame(frame);
+    if (!layer) {
+      return NS_ERROR_FAILURE;
+    }
+
+    layers.PutEntry(layer);
+  }
+
+  *aResult = layers.Count();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::EnableDialogs()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsGlobalWindow::Cast(window)->EnableDialogs();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::DisableDialogs()
+{
+  if (!nsContentUtils::IsCallerChrome()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsGlobalWindow::Cast(window)->DisableDialogs();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::AreDialogsEnabled(bool* aResult)
+{
+  if (!nsContentUtils::IsCallerChrome()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  *aResult = nsGlobalWindow::Cast(window)->AreDialogsEnabled();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFileId(JS::Handle<JS::Value> aFile, JSContext* aCx,
+                            int64_t* _retval)
+{
+  if (aFile.isPrimitive()) {
+    *_retval = -1;
+    return NS_OK;
+  }
+
+  JS::Rooted<JSObject*> obj(aCx, aFile.toObjectOrNull());
+
+  IDBMutableFile* mutableFile = nullptr;
+  if (NS_SUCCEEDED(UNWRAP_OBJECT(IDBMutableFile, &obj, mutableFile))) {
+    *_retval = mutableFile->GetFileId();
+    return NS_OK;
+  }
+
+  Blob* blob = nullptr;
+  if (NS_SUCCEEDED(UNWRAP_OBJECT(Blob, &obj, blob))) {
+    *_retval = blob->GetFileId();
+    return NS_OK;
+  }
+
+  *_retval = -1;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFilePath(JS::HandleValue aFile, JSContext* aCx,
+                              nsAString& _retval)
+{
+  if (aFile.isPrimitive()) {
+    _retval.Truncate();
+    return NS_OK;
+  }
+
+  JS::Rooted<JSObject*> obj(aCx, aFile.toObjectOrNull());
+
+  File* file = nullptr;
+  if (NS_SUCCEEDED(UNWRAP_OBJECT(File, &obj, file))) {
+    nsString filePath;
+    ErrorResult rv;
+    file->GetMozFullPathInternal(filePath, rv);
+    if (NS_WARN_IF(rv.Failed())) {
+      return rv.StealNSResult();
+    }
+
+    _retval = filePath;
+    return NS_OK;
+  }
+
+  _retval.Truncate();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFileReferences(const nsAString& aDatabaseName, int64_t aId,
+                                    JS::Handle<JS::Value> aOptions,
+                                    int32_t* aRefCnt, int32_t* aDBRefCnt,
+                                    int32_t* aSliceRefCnt, JSContext* aCx,
+                                    bool* aResult)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsCString origin;
+  nsresult rv =
+    quota::QuotaManager::GetInfoFromWindow(window, nullptr, nullptr, &origin,
+                                           nullptr);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  IDBOpenDBOptions options;
+  JS::Rooted<JS::Value> optionsVal(aCx, aOptions);
+  if (!options.Init(aCx, optionsVal)) {
+    return NS_ERROR_TYPE_ERR;
+  }
+
+  quota::PersistenceType persistenceType =
+    quota::PersistenceTypeFromStorage(options.mStorage);
+
+  RefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::Get();
+
+  if (mgr) {
+    rv = mgr->BlockAndGetFileReferences(persistenceType, origin, aDatabaseName,
+                                        aId, aRefCnt, aDBRefCnt, aSliceRefCnt,
+                                        aResult);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  else {
+    *aRefCnt = *aDBRefCnt = *aSliceRefCnt = -1;
+    *aResult = false;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::FlushPendingFileDeletions()
+{
+  RefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::Get();
+  if (mgr) {
+    nsresult rv = mgr->FlushPendingFileDeletions();
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return rv;
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::IsIncrementalGCEnabled(JSContext* cx, bool* aResult)
+{
+  *aResult = JS::IsIncrementalGCEnabled(cx);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::StartPCCountProfiling(JSContext* cx)
+{
+  js::StartPCCountProfiling(cx);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::StopPCCountProfiling(JSContext* cx)
+{
+  js::StopPCCountProfiling(cx);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::PurgePCCounts(JSContext* cx)
+{
+  js::PurgePCCounts(cx);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPCCountScriptCount(JSContext* cx, int32_t *result)
+{
+  *result = js::GetPCCountScriptCount(cx);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPCCountScriptSummary(int32_t script, JSContext* cx, nsAString& result)
+{
+  JSString *text = js::GetPCCountScriptSummary(cx, script);
+  if (!text)
+    return NS_ERROR_FAILURE;
+
+  if (!AssignJSString(cx, result, text))
+    return NS_ERROR_FAILURE;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPCCountScriptContents(int32_t script, JSContext* cx, nsAString& result)
+{
+  JSString *text = js::GetPCCountScriptContents(cx, script);
+  if (!text)
+    return NS_ERROR_FAILURE;
+
+  if (!AssignJSString(cx, result, text))
+    return NS_ERROR_FAILURE;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPaintingSuppressed(bool *aPaintingSuppressed)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+  nsIDocShell *docShell = window->GetDocShell();
+  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
+  NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+  *aPaintingSuppressed = presShell->IsPaintingSuppressed();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPlugins(JSContext* cx, JS::MutableHandle<JS::Value> aPlugins)
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  nsTArray<nsIObjectLoadingContent*> plugins;
+  doc->GetPlugins(plugins);
+
+  JS::Rooted<JSObject*> jsPlugins(cx);
+  nsresult rv = nsTArrayToJSArray(cx, plugins, &jsPlugins);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  aPlugins.setObject(*jsPlugins);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetScrollPositionClampingScrollPortSize(float aWidth, float aHeight)
+{
+  if (!(aWidth >= 0.0 && aHeight >= 0.0)) {
+    return NS_ERROR_ILLEGAL_VALUE;
+  }
+
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsLayoutUtils::SetScrollPositionClampingScrollPortSize(presShell, CSSSize(aWidth, aHeight));
+
+  return NS_OK;
+}
+
+nsresult
+nsDOMWindowUtils::RemoteFrameFullscreenChanged(nsIDOMElement* aFrameElement)
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  doc->RemoteFrameFullscreenChanged(aFrameElement);
+  return NS_OK;
+}
+
+nsresult
+nsDOMWindowUtils::RemoteFrameFullscreenReverted()
+{
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  doc->RemoteFrameFullscreenReverted();
+  return NS_OK;
+}
+
+static void
+PrepareForFullscreenChange(nsIPresShell* aPresShell, const nsSize& aSize,
+                           nsSize* aOldSize = nullptr)
+{
+  if (!aPresShell) {
+    return;
+  }
+  if (nsRefreshDriver* rd = aPresShell->GetRefreshDriver()) {
+    rd->SetIsResizeSuppressed();
+    // Since we are suppressing the resize reflow which would originally
+    // be triggered by view manager, we need to ensure that the refresh
+    // driver actually schedules a flush, otherwise it may get stuck.
+    rd->ScheduleViewManagerFlush();
+  }
+  if (!aSize.IsEmpty()) {
+    if (nsViewManager* viewManager = aPresShell->GetViewManager()) {
+      if (aOldSize) {
+        viewManager->GetWindowDimensions(&aOldSize->width, &aOldSize->height);
+      }
+      viewManager->SetWindowDimensions(aSize.width, aSize.height);
+    }
+  }
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::HandleFullscreenRequests(bool* aRetVal)
+{
+  PROFILER_MARKER("Enter fullscreen");
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  // Notify the pres shell that we are starting fullscreen change, and
+  // set the window dimensions in advance. Since the resize message
+  // comes after the fullscreen change call, doing so could avoid an
+  // extra resize reflow after this point.
+  nsRect screenRect;
+  if (nsPresContext* presContext = GetPresContext()) {
+    presContext->DeviceContext()->GetRect(screenRect);
+  }
+  nsSize oldSize;
+  PrepareForFullscreenChange(GetPresShell(), screenRect.Size(), &oldSize);
+  OldWindowSize::Set(mWindow, oldSize);
+
+  *aRetVal = nsIDocument::HandlePendingFullscreenRequests(doc);
+  return NS_OK;
+}
+
+nsresult
+nsDOMWindowUtils::ExitFullscreen()
+{
+  PROFILER_MARKER("Exit fullscreen");
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_STATE(doc);
+
+  // Although we would not use the old size if we have already exited
+  // fullscreen, we still want to cleanup in case we haven't.
+  nsSize oldSize = OldWindowSize::GetAndRemove(mWindow);
+  if (!doc->GetFullscreenElement()) {
+    return NS_OK;
+  }
+
+  // Notify the pres shell that we are starting fullscreen change, and
+  // set the window dimensions in advance. Since the resize message
+  // comes after the fullscreen change call, doing so could avoid an
+  // extra resize reflow after this point.
+  PrepareForFullscreenChange(GetPresShell(), oldSize);
+  nsIDocument::ExitFullscreenInDocTree(doc);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SelectAtPoint(float aX, float aY, uint32_t aSelectBehavior,
+                                bool *_retval)
+{
+  *_retval = false;
+
+  nsSelectionAmount amount;
+  switch (aSelectBehavior) {
+    case nsIDOMWindowUtils::SELECT_CHARACTER:
+      amount = eSelectCharacter;
+    break;
+    case nsIDOMWindowUtils::SELECT_CLUSTER:
+      amount = eSelectCluster;
+    break;
+    case nsIDOMWindowUtils::SELECT_WORD:
+      amount = eSelectWord;
+    break;
+    case nsIDOMWindowUtils::SELECT_LINE:
+      amount = eSelectLine;
+    break;
+    case nsIDOMWindowUtils::SELECT_BEGINLINE:
+      amount = eSelectBeginLine;
+    break;
+    case nsIDOMWindowUtils::SELECT_ENDLINE:
+      amount = eSelectEndLine;
+    break;
+    case nsIDOMWindowUtils::SELECT_PARAGRAPH:
+      amount = eSelectParagraph;
+    break;
+    case nsIDOMWindowUtils::SELECT_WORDNOSPACE:
+      amount = eSelectWordNoSpace;
+    break;
+    default:
+      return NS_ERROR_INVALID_ARG;
+  }
+
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  // The root frame for this content window
+  nsIFrame* rootFrame = presShell->FrameManager()->GetRootFrame();
+  if (!rootFrame) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  // Get the target frame at the client coordinates passed to us
+  nsPoint offset;
+  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
+  LayoutDeviceIntPoint pt =
+    nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, GetPresContext());
+  nsPoint ptInRoot =
+    nsLayoutUtils::GetEventCoordinatesRelativeTo(widget, pt, rootFrame);
+  nsIFrame* targetFrame = nsLayoutUtils::GetFrameForPoint(rootFrame, ptInRoot);
+  // This can happen if the page hasn't loaded yet or if the point
+  // is outside the frame.
+  if (!targetFrame) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // Convert point to coordinates relative to the target frame, which is
+  // what targetFrame's SelectByTypeAtPoint expects.
+  nsPoint relPoint =
+    nsLayoutUtils::GetEventCoordinatesRelativeTo(widget, pt, targetFrame);
+
+  nsresult rv =
+    static_cast<nsFrame*>(targetFrame)->
+      SelectByTypeAtPoint(GetPresContext(), relPoint, amount, amount,
+                          nsFrame::SELECT_ACCUMULATE);
+  *_retval = !NS_FAILED(rv);
+  return NS_OK;
+}
+
+static nsIDocument::additionalSheetType
+convertSheetType(uint32_t aSheetType)
+{
+  switch(aSheetType) {
+    case nsDOMWindowUtils::AGENT_SHEET:
+      return nsIDocument::eAgentSheet;
+    case nsDOMWindowUtils::USER_SHEET:
+      return nsIDocument::eUserSheet;
+    case nsDOMWindowUtils::AUTHOR_SHEET:
+      return nsIDocument::eAuthorSheet;
+    default:
+      NS_ASSERTION(false, "wrong type");
+      // we must return something although this should never happen
+      return nsIDocument::AdditionalSheetTypeCount;
+  }
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::LoadSheet(nsIURI *aSheetURI, uint32_t aSheetType)
+{
+  NS_ENSURE_ARG_POINTER(aSheetURI);
+  NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
+                aSheetType == USER_SHEET ||
+                aSheetType == AUTHOR_SHEET);
+
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  nsIDocument::additionalSheetType type = convertSheetType(aSheetType);
+
+  return doc->LoadAdditionalStyleSheet(type, aSheetURI);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::LoadSheetUsingURIString(const nsACString& aSheetURI, uint32_t aSheetType)
+{
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_NewURI(getter_AddRefs(uri), aSheetURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return LoadSheet(uri, aSheetType);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::AddSheet(nsIDOMStyleSheet *aSheet, uint32_t aSheetType)
+{
+  NS_ENSURE_ARG_POINTER(aSheet);
+  NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
+                aSheetType == USER_SHEET ||
+                aSheetType == AUTHOR_SHEET);
+
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  nsIDocument::additionalSheetType type = convertSheetType(aSheetType);
+  RefPtr<CSSStyleSheet> sheet = do_QueryObject(aSheet);
+  NS_ENSURE_TRUE(sheet, NS_ERROR_FAILURE);
+  if (sheet->GetOwningDocument()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  return doc->AddAdditionalStyleSheet(type, sheet);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RemoveSheet(nsIURI *aSheetURI, uint32_t aSheetType)
+{
+  NS_ENSURE_ARG_POINTER(aSheetURI);
+  NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
+                aSheetType == USER_SHEET ||
+                aSheetType == AUTHOR_SHEET);
+
+  nsCOMPtr<nsIDocument> doc = GetDocument();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  nsIDocument::additionalSheetType type = convertSheetType(aSheetType);
+
+  doc->RemoveAdditionalStyleSheet(type, aSheetURI);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RemoveSheetUsingURIString(const nsACString& aSheetURI, uint32_t aSheetType)
+{
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_NewURI(getter_AddRefs(uri), aSheetURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return RemoveSheet(uri, aSheetType);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsHandlingUserInput(bool* aHandlingUserInput)
+{
+  *aHandlingUserInput = EventStateManager::IsHandlingUserInput();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetMillisSinceLastUserInput(double* aMillisSinceLastUserInput)
+{
+  TimeStamp lastInput = EventStateManager::LatestUserInputStart();
+  if (lastInput.IsNull()) {
+    *aMillisSinceLastUserInput = 0;
+    return NS_OK;
+  }
+
+  *aMillisSinceLastUserInput = (TimeStamp::Now() - lastInput).ToMilliseconds();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::AllowScriptsToClose()
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+  nsGlobalWindow::Cast(window)->AllowScriptsToClose();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetIsParentWindowMainWidgetVisible(bool* aIsVisible)
+{
+  // this should reflect the "is parent window visible" logic in
+  // nsWindowWatcher::OpenWindowInternal()
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  nsCOMPtr<nsIWidget> parentWidget;
+  nsIDocShell *docShell = window->GetDocShell();
+  if (docShell) {
+    if (TabChild *tabChild = TabChild::GetFrom(docShell)) {
+      if (!tabChild->SendIsParentWindowMainWidgetVisible(aIsVisible))
+        return NS_ERROR_FAILURE;
+      return NS_OK;
+    }
+
+    nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
+    docShell->GetTreeOwner(getter_AddRefs(parentTreeOwner));
+    nsCOMPtr<nsIBaseWindow> parentWindow(do_GetInterface(parentTreeOwner));
+    if (parentWindow) {
+        parentWindow->GetMainWidget(getter_AddRefs(parentWidget));
+    }
+  }
+  if (!parentWidget) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  *aIsVisible = parentWidget->IsVisible();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::IsNodeDisabledForEvents(nsIDOMNode* aNode, bool* aRetVal)
+{
+  *aRetVal = false;
+  nsCOMPtr<nsINode> n = do_QueryInterface(aNode);
+  nsINode* node = n;
+  while (node) {
+    if (node->IsNodeOfType(nsINode::eHTML_FORM_CONTROL)) {
+      nsCOMPtr<nsIFormControl> fc = do_QueryInterface(node);
+      if (fc && fc->IsDisabledForEvents(eVoidEvent)) {
+        *aRetVal = true;
+        break;
+      }
+    }
+    node = node->GetParentNode();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetPaintFlashing(bool aPaintFlashing)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (presContext) {
+    presContext->SetPaintFlashing(aPaintFlashing);
+    // Clear paint flashing colors
+    nsIPresShell* presShell = GetPresShell();
+    if (!aPaintFlashing && presShell) {
+      nsIFrame* rootFrame = presShell->GetRootFrame();
+      if (rootFrame) {
+        rootFrame->InvalidateFrameSubtree();
+      }
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPaintFlashing(bool* aRetVal)
+{
+  *aRetVal = false;
+  nsPresContext* presContext = GetPresContext();
+  if (presContext) {
+    *aRetVal = presContext->GetPaintFlashing();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::DispatchEventToChromeOnly(nsIDOMEventTarget* aTarget,
+                                            nsIDOMEvent* aEvent,
+                                            bool* aRetVal)
+{
+  *aRetVal = false;
+  NS_ENSURE_STATE(aTarget && aEvent);
+  aEvent->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
+  aTarget->DispatchEvent(aEvent, aRetVal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RequestCompositorProperty(const nsAString& property,
+                                            float* aResult)
+{
+  if (nsIWidget* widget = GetWidget()) {
+    mozilla::layers::LayerManager* manager = widget->GetLayerManager();
+    if (manager) {
+      *aResult = manager->RequestProperty(property);
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetOMTAStyle(nsIDOMElement* aElement,
+                               const nsAString& aProperty,
+                               const nsAString& aPseudoElement,
+                               nsAString& aResult)
+{
+  nsCOMPtr<Element> element = do_QueryInterface(aElement);
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  RefPtr<nsROCSSPrimitiveValue> cssValue = nullptr;
+  nsIFrame* frame = element->GetPrimaryFrame();
+  if (frame && !aPseudoElement.IsEmpty()) {
+    if (aPseudoElement.EqualsLiteral("::before")) {
+      frame = nsLayoutUtils::GetBeforeFrame(frame);
+    } else if (aPseudoElement.EqualsLiteral("::after")) {
+      frame = nsLayoutUtils::GetAfterFrame(frame);
+    } else {
+      return NS_ERROR_INVALID_ARG;
+    }
+  }
+  if (frame && nsLayoutUtils::AreAsyncAnimationsEnabled()) {
+    if (aProperty.EqualsLiteral("opacity")) {
+      Layer* layer =
+        FrameLayerBuilder::GetDedicatedLayer(frame,
+                                             nsDisplayItem::TYPE_OPACITY);
+      if (layer) {
+        ShadowLayerForwarder* forwarder = layer->Manager()->AsShadowForwarder();
+        if (forwarder && forwarder->HasShadowManager()) {
+          float value;
+          bool hadAnimatedOpacity;
+          forwarder->GetShadowManager()->SendGetAnimationOpacity(
+            layer->AsShadowableLayer()->GetShadow(),
+            &value, &hadAnimatedOpacity);
+
+          if (hadAnimatedOpacity) {
+            cssValue = new nsROCSSPrimitiveValue;
+            cssValue->SetNumber(value);
+          }
+        }
+      }
+    } else if (aProperty.EqualsLiteral("transform")) {
+      Layer* layer =
+        FrameLayerBuilder::GetDedicatedLayer(frame,
+                                             nsDisplayItem::TYPE_TRANSFORM);
+      if (layer) {
+        ShadowLayerForwarder* forwarder = layer->Manager()->AsShadowForwarder();
+        if (forwarder && forwarder->HasShadowManager()) {
+          MaybeTransform transform;
+          forwarder->GetShadowManager()->SendGetAnimationTransform(
+            layer->AsShadowableLayer()->GetShadow(), &transform);
+          if (transform.type() == MaybeTransform::TMatrix4x4) {
+            Matrix4x4 matrix = transform.get_Matrix4x4();
+            cssValue = nsComputedDOMStyle::MatrixToCSSValue(matrix);
+          }
+        }
+      }
+    }
+  }
+
+  if (cssValue) {
+    nsString text;
+    ErrorResult rv;
+    cssValue->GetCssText(text, rv);
+    aResult.Assign(text);
+    return rv.StealNSResult();
+  } else {
+    aResult.Truncate();
+  }
+
+  return NS_OK;
+}
+
+namespace {
+
+class HandlingUserInputHelper final : public nsIJSRAIIHelper
+{
+public:
+  explicit HandlingUserInputHelper(bool aHandlingUserInput);
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIJSRAIIHELPER
+
+private:
+  ~HandlingUserInputHelper();
+
+  bool mHandlingUserInput;
+  bool mDestructCalled;
+};
+
+NS_IMPL_ISUPPORTS(HandlingUserInputHelper, nsIJSRAIIHelper)
+
+HandlingUserInputHelper::HandlingUserInputHelper(bool aHandlingUserInput)
+  : mHandlingUserInput(aHandlingUserInput),
+    mDestructCalled(false)
+{
+  if (aHandlingUserInput) {
+    EventStateManager::StartHandlingUserInput();
+  }
+}
+
+HandlingUserInputHelper::~HandlingUserInputHelper()
+{
+  // We assert, but just in case, make sure we notify the ESM.
+  MOZ_ASSERT(mDestructCalled);
+  if (!mDestructCalled) {
+    Destruct();
+  }
+}
+
+NS_IMETHODIMP
+HandlingUserInputHelper::Destruct()
+{
+  if (NS_WARN_IF(mDestructCalled)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  mDestructCalled = true;
+  if (mHandlingUserInput) {
+    EventStateManager::StopHandlingUserInput();
+  }
+
+  return NS_OK;
+}
+
+} // unnamed namespace
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetHandlingUserInput(bool aHandlingUserInput,
+                                       nsIJSRAIIHelper** aHelper)
+{
+  if (!nsContentUtils::IsCallerChrome()) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  RefPtr<HandlingUserInputHelper> helper(
+    new HandlingUserInputHelper(aHandlingUserInput));
+  helper.forget(aHelper);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetContentAPZTestData(JSContext* aContext,
+                                        JS::MutableHandleValue aOutContentTestData)
+{
+  if (nsIWidget* widget = GetWidget()) {
+    RefPtr<LayerManager> lm = widget->GetLayerManager();
+    if (!lm) {
+      return NS_OK;
+    }
+    if (ClientLayerManager* clm = lm->AsClientLayerManager()) {
+      if (!clm->GetAPZTestData().ToJS(aOutContentTestData, aContext)) {
+        return NS_ERROR_FAILURE;
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetCompositorAPZTestData(JSContext* aContext,
+                                           JS::MutableHandleValue aOutCompositorTestData)
+{
+  if (nsIWidget* widget = GetWidget()) {
+    RefPtr<LayerManager> lm = widget->GetLayerManager();
+    if (!lm) {
+      return NS_OK;
+    }
+    if (ClientLayerManager* clm = lm->AsClientLayerManager()) {
+      APZTestData compositorSideData;
+      clm->GetCompositorSideAPZTestData(&compositorSideData);
+      if (!compositorSideData.ToJS(aOutCompositorTestData, aContext)) {
+        return NS_ERROR_FAILURE;
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::PostRestyleSelfEvent(nsIDOMElement* aElement)
+{
+  nsCOMPtr<Element> element = do_QueryInterface(aElement);
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsLayoutUtils::PostRestyleEvent(element, eRestyle_Self, nsChangeHint(0));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetMediaSuspend(uint32_t* aSuspend)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  *aSuspend = window->GetMediaSuspend();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetMediaSuspend(uint32_t aSuspend)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->SetMediaSuspend(aSuspend);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetAudioMuted(bool* aMuted)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  *aMuted = window->GetAudioMuted();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetAudioMuted(bool aMuted)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->SetAudioMuted(aMuted);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetAudioVolume(float* aVolume)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  *aVolume = window->GetAudioVolume();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetAudioVolume(float aVolume)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  return window->SetAudioVolume(aVolume);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetChromeMargin(int32_t aTop,
+                                  int32_t aRight,
+                                  int32_t aBottom,
+                                  int32_t aLeft)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  if (window) {
+    nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(window->GetDocShell());
+    if (baseWindow) {
+      nsCOMPtr<nsIWidget> widget;
+      baseWindow->GetMainWidget(getter_AddRefs(widget));
+      if (widget) {
+        LayoutDeviceIntMargin margins(aTop, aRight, aBottom, aLeft);
+        return widget->SetNonClientMargins(margins);
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFrameUniformityTestData(JSContext* aContext,
+                                             JS::MutableHandleValue aOutFrameUniformity)
+{
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  RefPtr<LayerManager> manager = widget->GetLayerManager();
+  if (!manager) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  FrameUniformityData outData;
+  manager->GetFrameUniformity(&outData);
+  outData.ToJS(aOutFrameUniformity, aContext);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::XpconnectArgument(nsIDOMWindowUtils* aThis)
+{
+  // Do nothing.
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::AskPermission(nsIContentPermissionRequest* aRequest)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  return nsContentPermissionUtils::AskPermission(aRequest, window->GetCurrentInnerWindow());
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetElementsRestyled(uint64_t* aResult)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  *aResult = presContext->ElementsRestyledCount();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFramesConstructed(uint64_t* aResult)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  *aResult = presContext->FramesConstructedCount();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetFramesReflowed(uint64_t* aResult)
+{
+  nsPresContext* presContext = GetPresContext();
+  if (!presContext) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  *aResult = presContext->FramesReflowedCount();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetServiceWorkersTestingEnabled(bool aEnabled)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  window->SetServiceWorkersTestingEnabled(aEnabled);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetServiceWorkersTestingEnabled(bool *aEnabled)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+
+  *aEnabled = window->GetServiceWorkersTestingEnabled();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::EnterChaosMode()
+{
+  ChaosMode::enterChaosMode();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::LeaveChaosMode()
+{
+  ChaosMode::leaveChaosMode();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ForceUseCounterFlush(nsIDOMNode *aNode)
+{
+  NS_ENSURE_ARG_POINTER(aNode);
+
+  if (nsCOMPtr<nsIDocument> doc = do_QueryInterface(aNode)) {
+    mozilla::css::ImageLoader* loader = doc->StyleImageLoader();
+    loader->FlushUseCounters();
+
+    static_cast<nsDocument*>(doc.get())->ReportUseCounters();
+    return NS_OK;
+  }
+
+  if (nsCOMPtr<nsIContent> content = do_QueryInterface(aNode)) {
+    if (HTMLImageElement* img = HTMLImageElement::FromContent(content)) {
+      img->FlushUseCounters();
+      return NS_OK;
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::HasRuleProcessorUsedByMultipleStyleSets(uint32_t aSheetType,
+                                                          bool* aRetVal)
+{
+  nsIPresShell* presShell = GetPresShell();
+  if (!presShell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return presShell->HasRuleProcessorUsedByMultipleStyleSets(aSheetType,
+                                                            aRetVal);
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::SetNextPaintSyncId(int32_t aSyncId)
+{
+  if (nsIWidget* widget = GetWidget()) {
+    RefPtr<LayerManager> lm = widget->GetLayerManager();
+    if (lm && lm->AsClientLayerManager()) {
+      lm->AsClientLayerManager()->SetNextPaintSyncId(aSyncId);
+      return NS_OK;
+    }
+  }
+
+  NS_WARNING("Paint sync id could not be set on the ClientLayerManager");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::RespectDisplayPortSuppression(bool aEnabled)
+{
+  nsCOMPtr<nsIPresShell> shell(GetPresShell());
+  APZCCallbackHelper::RespectDisplayPortSuppression(aEnabled, shell);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::ForceReflowInterrupt()
+{
+  nsPresContext* pc = GetPresContext();
+  if (!pc) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+  pc->SetPendingInterruptFromTest();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::TerminateGPUProcess()
+{
+  GPUProcessManager* pm = GPUProcessManager::Get();
+  if (pm) {
+    pm->KillProcess();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetGpuProcessPid(int32_t* aPid)
+{
+  GPUProcessManager* pm = GPUProcessManager::Get();
+  if (pm) {
+    *aPid = pm->GPUProcessPid();
+  } else {
+    *aPid = -1;
+  }
+
+  return NS_OK;
+}
+
+NS_INTERFACE_MAP_BEGIN(nsTranslationNodeList)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+  NS_INTERFACE_MAP_ENTRY(nsITranslationNodeList)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ADDREF(nsTranslationNodeList)
+NS_IMPL_RELEASE(nsTranslationNodeList)
+
+NS_IMETHODIMP
+nsTranslationNodeList::Item(uint32_t aIndex, nsIDOMNode** aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+  NS_IF_ADDREF(*aRetVal = mNodes.SafeElementAt(aIndex));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTranslationNodeList::IsTranslationRootAtIndex(uint32_t aIndex, bool* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+  if (aIndex >= mLength) {
+    *aRetVal = false;
+    return NS_OK;
+  }
+
+  *aRetVal = mNodeIsRoot.ElementAt(aIndex);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTranslationNodeList::GetLength(uint32_t* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+  *aRetVal = mLength;
+  return NS_OK;
+}