[Reland] Per WebViewScheduler virtual time

third_party/WebKit/public/web/WebView.h

 /*
  * Copyright (C) 2009, 2010, 2011, 2012 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 42 matching lines @@
 class WebHitTestResult;
 class WebLocalFrame;
 class WebPageImportanceSignals;
 class WebPageOverlay;
 class WebPrerendererClient;
 class WebRemoteFrame;
 class WebSettings;
 class WebSpellCheckClient;
 class WebString;
 class WebViewClient;
+class WebViewScheduler;
 struct WebActiveWheelFlingParameters;
 struct WebDeviceEmulationParams;
 struct WebFloatPoint;
 struct WebMediaPlayerAction;
 struct WebPluginAction;
 struct WebPoint;
 struct WebWindowFeatures;
 
 class WebView : public WebWidget {
 public:
@@ skipping 371 matching lines @@
     // by the compositor) but must be completed by the WebView.
     virtual void transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters&) = 0;
 
     // Cancels an active fling, returning true if a fling was active.
     virtual bool endActiveFlingAnimation() = 0;
 
     virtual void setShowPaintRects(bool) = 0;
     virtual void setShowFPSCounter(bool) = 0;
     virtual void setShowScrollBottleneckRects(bool) = 0;
 
+    // Scheduling -----------------------------------------------------------
+
+    virtual WebViewScheduler* scheduler() const = 0;
+
     // Visibility -----------------------------------------------------------
 
     // Sets the visibility of the WebView.
     virtual void setVisibilityState(WebPageVisibilityState visibilityState,
                                     bool isInitialState) { }
 
     // Graphics -------------------------------------------------------------
 
     virtual WebCompositedDisplayList* compositedDisplayList() { return nullptr; }
 
@@ skipping 23 matching lines @@
     // context's ability to deal with that failure gracefully can be tested.
     virtual void forceNextDrawingBufferCreationToFail() = 0;
 
 protected:
     ~WebView() {}
 };
 
 } // namespace blink
 
 #endif