Add OVERRIDE to chrome/renderer.

chrome/renderer/spellchecker/spellcheck.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 CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_H_
 #define CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 53 matching lines @@
   // Returns true if the spellchecker delegate checking to a system-provided
   // checker on the browser process.
   bool is_using_platform_spelling_engine() const {
     return is_using_platform_spelling_engine_;
   }
 
  private:
   FRIEND_TEST(SpellCheckTest, GetAutoCorrectionWord_EN_US);
 
   // RenderProcessObserver implementation:
-  virtual bool OnControlMessageReceived(const IPC::Message& message);
+  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // Message handlers.
   void OnInit(IPC::PlatformFileForTransit bdict_file,
               const std::vector<std::string>& custom_words,
               const std::string& language,
               bool auto_spell_correct);
   void OnWordAdded(const std::string& word);
   void OnEnableAutoSpellCorrect(bool enable);
 
   // Initializes the Hunspell dictionary, or does nothing if |hunspell_| is
@@ skipping 55 matching lines @@
   // This flags whether we have ever been initialized, or have asked the browser
   // for a dictionary. The value indicates whether we should request a
   // dictionary from the browser when the render view asks us to check the
   // spelling of a word.
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellCheck);
 };
 
 #endif  // CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_H_