When --disable-gpu-vsync, run requestAnimFrame callbacks at top speed.

content/renderer/render_widget.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 151 matching lines @@
 
   // Paints the given rectangular region of the WebWidget into canvas (a
   // shared memory segment returned by AllocPaintBuf on Windows). The caller
   // must ensure that the given rect fits within the bounds of the WebWidget.
   void PaintRect(const gfx::Rect& rect, const gfx::Point& canvas_origin,
                  skia::PlatformCanvas* canvas);
 
   // Paints a border at the given rect for debugging purposes.
   void PaintDebugBorder(const gfx::Rect& rect, skia::PlatformCanvas* canvas);
 
+  bool IsRenderingVSyncd();
   void AnimationCallback();
   void AnimateIfNeeded();
   void InvalidationCallback();
   void DoDeferredUpdateAndSendInputAck();
   void DoDeferredUpdate();
   void DoDeferredClose();
   void DoDeferredSetWindowRect(const WebKit::WebRect& pos);
 
   // Set the background of the render widget to a bitmap. The bitmap will be
   // tiled in both directions if it isn't big enough to fill the area. This is
@@ skipping 241 matching lines @@
   bool animation_update_pending_;
   bool animation_task_posted_;
   bool invalidation_task_posted_;
 
   base::TimeTicks last_do_deferred_update_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_