Let every "accelerated IO surface swapped" message have an identifier of the surface.

chrome/browser/renderer_host/accelerated_surface_container_manager_mac.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_
 #pragma once
 
 #include <OpenGL/OpenGL.h>
 #include <map>
@@ skipping 56 matching lines @@
 
   // Draws the plugin container associated with the given id into the given
   // OpenGL context, which must already be current.
   void Draw(CGLContextObj context, gfx::PluginWindowHandle id);
 
   // Causes the next Draw call on each container to trigger a texture upload.
   // Should be called any time the drawing context has changed.
   void ForceTextureReload();
 
   // Notifies a surface that it has been painted to.
-  void SetSurfaceWasPaintedTo(gfx::PluginWindowHandle id);
+  void SetSurfaceWasPaintedTo(gfx::PluginWindowHandle id, uint64 surface_id);
 
   // Returns if a given surface should be shown.
   bool SurfaceShouldBeVisible(gfx::PluginWindowHandle id) const;
  private:
   uint32 current_id_;
 
   // Maps a "fake" plugin window handle to the corresponding container.
   AcceleratedSurfaceContainerMac*
       MapIDToContainer(gfx::PluginWindowHandle id) const;
 
@@ skipping 22 matching lines @@
   // Both |plugin_window_to_container_map_| and the
   // AcceleratedSurfaceContainerMac in it are not threadsafe, but accessed from
   // multiple threads. All these accesses are guarded by this lock.
   mutable Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerManagerMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_GPU_PLUGIN_CONTAINER_MANAGER_MAC_H_