mustash: enable GPU Compositing in renderer

content/renderer/render_view_impl.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_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 224 matching lines @@
 
   // Indicates whether this page has been focused by the browser.
   bool has_focus() const { return has_focus_; }
 
   // Sets page-level focus in this view and notifies plugins and Blink's
   // FocusController.
   void SetFocus(bool enable);
 
   void AttachWebFrameWidget(blink::WebWidget* frame_widget);
 
+  scoped_ptr<cc::OutputSurface> CreateOutputSurface(bool fallback) override;
+
   // Plugin-related functions --------------------------------------------------
 
 #if defined(ENABLE_PLUGINS)
   // Get/set the plugin which will be used as to handle document find requests.
   void set_plugin_find_handler(PepperPluginInstanceImpl* plugin) {
     plugin_find_handler_ = plugin;
   }
   PepperPluginInstanceImpl* plugin_find_handler() {
     return plugin_find_handler_;
   }
@@ skipping 776 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_