Add OVERRIDE to chrome/browser/extensions/.

chrome/browser/extensions/extension_omnibox_api.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_BROWSER_EXTENSIONS_EXTENSION_OMNIBOX_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_OMNIBOX_API_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 31 matching lines @@
   // sent at most once in a give input session, after any OnInputChanged events.
   static void OnInputCancelled(
       Profile* profile, const std::string& extension_id);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ExtensionOmniboxEventRouter);
 };
 
 class OmniboxSendSuggestionsFunction : public SyncExtensionFunction {
  public:
-  virtual bool RunImpl();
+  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("omnibox.sendSuggestions");
 };
 
 class OmniboxSetDefaultSuggestionFunction : public SyncExtensionFunction {
  public:
-  virtual bool RunImpl();
+  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("omnibox.setDefaultSuggestion");
 };
 
 struct ExtensionOmniboxSuggestion {
   ExtensionOmniboxSuggestion();
   ~ExtensionOmniboxSuggestion();
 
   // Converts a list of style ranges from the extension into the format expected
   // by the autocomplete system.
   bool ReadStylesFromValue(const base::ListValue& value);
@@ skipping 29 matching lines @@
     AutocompleteMatch* match);
 
 // Launch an Extension App from |match| details provided by the Omnibox. If the
 // application wants to launch as a window or panel, |disposition| is ignored;
 // otherwise it's used to determine in which tab we'll launch the application.
 void LaunchAppFromOmnibox(const AutocompleteMatch& match,
                           Profile* profile,
                           WindowOpenDisposition disposition);
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_OMNIBOX_API_H_