Add OVERRIDE to content/.

content/renderer/text_input_client_observer.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_RENDERER_TEXT_INPUT_CLIENT_OBSERVER_H_
 #define CONTENT_RENDERER_TEXT_INPUT_CLIENT_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "ui/base/range/range.h"
 #include "ui/gfx/point.h"
 
 class RenderViewImpl;
 
 namespace WebKit {
 class WebView;
 }
 
 // This is the renderer-side message filter that generates the replies for the
 // messages sent by the TextInputClientMac. See
 // content/browser/renderer_host/text_input_client_mac.h for more information.
 class TextInputClientObserver : public content::RenderViewObserver {
  public:
   explicit TextInputClientObserver(RenderViewImpl* render_view);
   virtual ~TextInputClientObserver();
 
   // RenderViewObserver overrides:
-  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  private:
   // Returns the WebView of the RenderView.
   WebKit::WebView* webview();
 
   // IPC Message handlers:
   void OnCharacterIndexForPoint(gfx::Point point);
   void OnFirstRectForCharacterRange(ui::Range range);
   void OnStringForRange(ui::Range range);
 
   DISALLOW_COPY_AND_ASSIGN(TextInputClientObserver);
 };
 
 #endif  // CONTENT_RENDERER_TEXT_INPUT_CLIENT_OBSERVER_H_