Revert of Remove WebViewImpl::setIsAcceleratedCompositingActive

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 722 matching lines @@
     RefPtr<UserGestureToken> m_mouseCaptureGestureToken;
 
     RefPtr<UserGestureToken> m_pointerLockGestureToken;
 
     IntRect m_rootLayerScrollDamage;
     WebLayerTreeView* m_layerTreeView;
     WebLayer* m_rootLayer;
     GraphicsLayer* m_rootGraphicsLayer;
     GraphicsLayer* m_rootTransformLayer;
     OwnPtr<GraphicsLayerFactory> m_graphicsLayerFactory;
+    bool m_isAcceleratedCompositingActive;
+    bool m_layerTreeViewCommitsDeferred;
+    bool m_layerTreeViewClosed;
     bool m_matchesHeuristicsForGpuRasterization;
     // If true, the graphics context is being restored.
     bool m_recreatingGraphicsContext;
     static const WebInputEvent* m_currentInputEvent;
 
     MediaKeysClientImpl m_mediaKeysClientImpl;
     OwnPtr<WebActiveGestureAnimation> m_gestureAnimation;
     WebPoint m_positionOnFlingStart;
     WebPoint m_globalPositionOnFlingStart;
     int m_flingModifier;
     bool m_flingSourceDevice;
     Vector<OwnPtr<LinkHighlight>> m_linkHighlights;
     OwnPtrWillBePersistent<FullscreenController> m_fullscreenController;
 
     bool m_showFPSCounter;
+    bool m_showPaintRects;
+    bool m_showDebugBorders;
     bool m_continuousPaintingEnabled;
+    bool m_showScrollBottleneckRects;
     WebColor m_baseBackgroundColor;
     WebColor m_backgroundColorOverride;
     float m_zoomFactorOverride;
 
     bool m_userGestureObserved;
     WebDisplayMode m_displayMode;
 
     RefPtr<EventListener> m_popupMouseWheelEventListener;
 };
 
 DEFINE_TYPE_CASTS(WebViewImpl, WebWidget, widget, widget->isWebView(), widget.isWebView());
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif