Remove some dead BrowserPlugin and OOPIF compositing code.

content/renderer/browser_plugin/browser_plugin.h

 // Copyright 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_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/public/web/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 171 matching lines @@
 
   // Populates BrowserPluginHostMsg_ResizeGuest_Params with resize state.
   void PopulateResizeGuestParameters(
       const gfx::Size& view_size,
       BrowserPluginHostMsg_ResizeGuest_Params* params);
 
   // IPC message handlers.
   // Please keep in alphabetical order.
   void OnAdvanceFocus(int instance_id, bool reverse);
   void OnAttachACK(int browser_plugin_instance_id);
-  void OnBuffersSwapped(int instance_id,
-                        const FrameMsg_BuffersSwapped_Params& params);
   void OnCompositorFrameSwapped(const IPC::Message& message);
   void OnCopyFromCompositingSurface(int instance_id,
                                     int request_id,
                                     gfx::Rect source_rect,
                                     gfx::Size dest_size);
   void OnGuestGone(int instance_id);
   void OnSetCursor(int instance_id, const WebCursor& cursor);
   void OnSetMouseLock(int instance_id, bool enable);
   void OnShouldAcceptTouchEvents(int instance_id, bool accept);
 
@@ skipping 45 matching lines @@
   // Weak factory used in v8 |MakeWeak| callback, since the v8 callback might
   // get called after BrowserPlugin has been destroyed.
   base::WeakPtrFactory<BrowserPlugin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_