Revert of Read compositor VSync information from platform, when possible

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 7c6605cc62ccf2478f9cdf9c8ca0c1db897066db..995aaf6ec8edd8eaf711c3f5b4ea5aded3b77998 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -37,7 +37,6 @@
 #include "ui/base/ime/text_input_client.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
-#include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
 #include "webkit/common/cursors/webcursor.h"
@@ -80,7 +79,6 @@
 class CONTENT_EXPORT RenderWidgetHostViewAura
     : public RenderWidgetHostViewBase,
       public ui::CompositorObserver,
-      public ui::CompositorVSyncManager::Observer,
       public ui::TextInputClient,
       public gfx::DisplayObserver,
       public aura::RootWindowObserver,
@@ -374,9 +372,8 @@
   virtual void OnCompositingAborted(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingLockStateChanged(
       ui::Compositor* compositor) OVERRIDE;
-
-  // Overridden from ui::CompositorVSyncManager::Observer
-  virtual void OnUpdateVSyncParameters(base::TimeTicks timebase,
+  virtual void OnUpdateVSyncParameters(ui::Compositor* compositor,
+                                       base::TimeTicks timebase,
                                        base::TimeDelta interval) OVERRIDE;
 
  private: