Use inner HWND for accelerated rendering on windows

chrome/renderer/render_widget.h

 // Copyright (c) 2009 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_RENDERER_RENDER_WIDGET_H_
 #define CHROME_RENDERER_RENDER_WIDGET_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 81 matching lines @@
 
   // IPC::Channel::Listener
   virtual void OnMessageReceived(const IPC::Message& msg);
 
   // IPC::Message::Sender
   virtual bool Send(IPC::Message* msg);
 
   // WebKit::WebWidgetClient
   virtual void didInvalidateRect(const WebKit::WebRect&);
   virtual void didScrollRect(int dx, int dy, const WebKit::WebRect& clipRect);
+  virtual void didChangeAcceleratedCompositingActive(bool active);
   virtual void scheduleComposite();
   virtual void didFocus();
   virtual void didBlur();
   virtual void didChangeCursor(const WebKit::WebCursorInfo&);
   virtual void closeWidgetSoon();
   virtual void show(WebKit::WebNavigationPolicy);
   virtual void runModal() {}
   virtual WebKit::WebRect windowRect();
   virtual void setWindowRect(const WebKit::WebRect&);
   virtual WebKit::WebRect windowResizerRect();
@@ skipping 247 matching lines @@
   // Indicates if the next sequence of Char events should be suppressed or not.
   bool suppress_next_char_events_;
 
   // Set to true if painting to the window is handled by the GPU process.
   bool is_gpu_rendering_active_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CHROME_RENDERER_RENDER_WIDGET_H_