GPU compositing surface handle is no longer sent to renderer process.

content/browser/renderer_host/gpu_message_filter.h

Index: content/browser/renderer_host/gpu_message_filter.h
===================================================================
--- content/browser/renderer_host/gpu_message_filter.h	(revision 90090)
+++ content/browser/renderer_host/gpu_message_filter.h	(working copy)
@@ -6,6 +6,7 @@
 #define CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_
 #pragma once
 
+#include "base/memory/ref_counted.h"
 #include "content/browser/browser_message_filter.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "ui/gfx/native_widget_types.h"
@@ -14,6 +15,7 @@
 class GpuProcessHostUIShim;
 struct GPUCreateCommandBufferConfig;
 struct GPUInfo;
+class RenderWidgetHelper;
 
 namespace IPC {
 struct ChannelHandle;
@@ -25,7 +27,8 @@
 class GpuMessageFilter : public BrowserMessageFilter,
                          public base::SupportsWeakPtr<GpuMessageFilter> {
  public:
-  explicit GpuMessageFilter(int render_process_id);
+  GpuMessageFilter(int render_process_id,
+                   RenderWidgetHelper* render_widget_helper);
 
   // BrowserMessageFilter methods:
   virtual bool OnMessageReceived(const IPC::Message& message,
@@ -41,7 +44,6 @@
   void OnEstablishGpuChannel(content::CauseForGpuLaunch,
                              IPC::Message* reply);
   void OnCreateViewCommandBuffer(
-      gfx::PluginWindowHandle compositing_surface,
       int32 render_view_id,
       const GPUCreateCommandBufferConfig& init_params,
       IPC::Message* reply);
@@ -49,6 +51,8 @@
   int gpu_host_id_;
   int render_process_id_;
 
+  scoped_refptr<RenderWidgetHelper> render_widget_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuMessageFilter);
 };