Add OVERRIDE to content/.

content/plugin/webplugin_accelerated_surface_proxy_mac.h

 // Copyright (c) 2011 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_PLUGIN_WEBPLUGIN_ACCELERATED_SURFACE_PROXY_H_
 #define CONTENT_PLUGIN_WEBPLUGIN_ACCELERATED_SURFACE_PROXY_H_
 #pragma once
 
+#include "base/compiler_specific.h"
 #include "ui/gfx/gl/gpu_preference.h"
 #include "webkit/plugins/npapi/webplugin_accelerated_surface_mac.h"
 
 class WebPluginProxy;
 class AcceleratedSurface;
 
 // Out-of-process implementation of WebPluginAcceleratedSurface that proxies
 // calls through a WebPluginProxy.
 class WebPluginAcceleratedSurfaceProxy
     : public webkit::npapi::WebPluginAcceleratedSurface {
  public:
   // Creates a new WebPluginAcceleratedSurfaceProxy that uses plugin_proxy
   // to proxy calls. plugin_proxy must outlive this object.
   WebPluginAcceleratedSurfaceProxy(WebPluginProxy* plugin_proxy,
                                    gfx::GpuPreference gpu_preference);
   virtual ~WebPluginAcceleratedSurfaceProxy();
 
   // WebPluginAcceleratedSurface implementation.
-  virtual void SetWindowHandle(gfx::PluginWindowHandle window);
-  virtual void SetSize(const gfx::Size& size);
-  virtual CGLContextObj context();
-  virtual void StartDrawing();
-  virtual void EndDrawing();
+  virtual void SetWindowHandle(gfx::PluginWindowHandle window) OVERRIDE;
+  virtual void SetSize(const gfx::Size& size) OVERRIDE;
+  virtual CGLContextObj context() OVERRIDE;
+  virtual void StartDrawing() OVERRIDE;
+  virtual void EndDrawing() OVERRIDE;
 
  private:
   WebPluginProxy* plugin_proxy_;  // Weak ref.
   gfx::PluginWindowHandle window_handle_;
   AcceleratedSurface* surface_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginAcceleratedSurfaceProxy);
 };
 
 #endif  // CONTENT_PLUGIN_WEBPLUGIN_ACCELERATED_SURFACE_PROXY_H_