Add OVERRIDE to chrome/browser/.

chrome/browser/autocomplete/keyword_provider.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.
 //
 // This file contains the keyword autocomplete provider. The keyword provider
 // is responsible for remembering/suggesting user "search keyword queries"
 // (e.g.  "imdb Godzilla") and then fixing them up into valid URLs.  An
 // instance of it gets created and managed by the autocomplete controller.
 // KeywordProvider uses a TemplateURLService to find the set of keywords.
 //
@@ skipping 54 matching lines @@
       bool trim_leading_whitespace);
 
   // Returns the matching substituting keyword for |input|, or NULL if there
   // is no keyword for the specified input.
   static const TemplateURL* GetSubstitutingTemplateURLForInput(
       Profile* profile,
       const AutocompleteInput& input,
       string16* remaining_input);
 
   // AutocompleteProvider
-  virtual void Start(const AutocompleteInput& input, bool minimal_changes);
-  virtual void Stop();
+  virtual void Start(const AutocompleteInput& input,
+                     bool minimal_changes) OVERRIDE;
+  virtual void Stop() OVERRIDE;
 
  private:
   class ScopedEndExtensionKeywordMode;
   friend class ScopedEndExtensionKeywordMode;
 
   virtual ~KeywordProvider();
 
   // Extracts the keyword from |input| into |keyword|. Any remaining characters
   // after the keyword are placed in |remaining_input|. Returns true if |input|
   // is valid and has a keyword. This makes use of SplitKeywordFromInput to
@@ skipping 42 matching lines @@
       size_t prefix_length,
       const string16& remaining_input,
       int relevance);
 
   void EnterExtensionKeywordMode(const std::string& extension_id);
   void MaybeEndExtensionKeywordMode();
 
   // content::NotificationObserver interface.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
   // Model for the keywords.  This is only non-null when testing, otherwise the
   // TemplateURLService from the Profile is used.
   TemplateURLService* model_;
 
   // Identifies the current input state. This is incremented each time the
   // autocomplete edit's input changes in any way. It is used to tell whether
   // suggest results from the extension are current.
   int current_input_id_;
 
   // The input state at the time we last asked the extension for suggest
   // results.
   AutocompleteInput extension_suggest_last_input_;
 
   // We remember the last suggestions we've received from the extension in case
   // we need to reset our matches without asking the extension again.
   std::vector<AutocompleteMatch> extension_suggest_matches_;
 
   // If non-empty, holds the ID of the extension whose keyword is currently in
   // the URL bar while the autocomplete popup is open.
   std::string current_keyword_extension_id_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(KeywordProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_PROVIDER_H_