Remove browser-side tracking of accelerated compositing

content/browser/renderer_host/render_widget_host_view_base.h

 // Copyright (c) 2012 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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
 #endif
@@ skipping 258 matching lines @@
       const base::Callback<void(bool)>& callback) = 0;
 
   // Returns true if CopyFromCompositingSurfaceToVideoFrame() is likely to
   // succeed.
   //
   // TODO(nick): When VideoFrame copies are broadly implemented, this method
   // should be renamed to HasCompositingSurface(), or unified with
   // IsSurfaceAvailableForCopy() and HasAcceleratedSurface().
   virtual bool CanCopyToVideoFrame() const = 0;
 
-  // Called when accelerated compositing state changes.
-  virtual void OnAcceleratedCompositingStateChange() = 0;
   // Called when an accelerated compositing surface is initialized.
   virtual void AcceleratedSurfaceInitialized(int host_id, int route_id) = 0;
   // |params.window| and |params.surface_id| indicate which accelerated
   // surface's buffers swapped. |params.renderer_id| and |params.route_id|
   // are used to formulate a reply to the GPU process to prevent it from getting
   // too far ahead. They may all be zero, in which case no flow control is
   // enforced; this case is currently used for accelerated plugins.
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params_in_pixel,
       int gpu_host_id) = 0;
@@ skipping 134 matching lines @@
   uint32 renderer_frame_number_;
 
   base::OneShotTimer<RenderWidgetHostViewBase> flush_input_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_