Add OVERRIDE to chrome/browser/ui/webui/.

chrome/browser/ui/webui/ntp/new_tab_ui.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_UI_WEBUI_NTP_NEW_TAB_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_UI_H_
 #pragma once
 
 #include <string>
 
@@ skipping 45 matching lines @@
     explicit NewTabHTMLSource(Profile* profile);
 
     // Called when the network layer has requested a resource underneath
     // the path we registered.
     virtual void StartDataRequest(const std::string& path,
                                   bool is_incognito,
                                   int request_id) OVERRIDE;
 
     virtual std::string GetMimeType(const std::string&) const OVERRIDE;
 
-    virtual bool ShouldReplaceExistingSource() const;
+    virtual bool ShouldReplaceExistingSource() const OVERRIDE;
 
    private:
     virtual ~NewTabHTMLSource() {}
 
     // Pointer back to the original profile.
     Profile* profile_;
 
     DISALLOW_COPY_AND_ASSIGN(NewTabHTMLSource);
   };
 
  private:
   FRIEND_TEST_ALL_PREFIXES(NewTabUITest, UpdateUserPrefsVersion);
 
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
   // Reset the CSS caches.
   void InitializeCSSCaches();
 
   void StartTimingPaint(RenderViewHost* render_view_host);
   void PaintTimeout();
 
   // Overridden from ChromeWebUI. Determines if the bookmarks bar can be shown
   // detached from the location bar.
   virtual bool CanShowBookmarkBar() const OVERRIDE;
 
   content::NotificationRegistrar registrar_;
 
   // Tracks updates of the kShowBookmarkBar preference.
   PrefChangeRegistrar pref_change_registrar_;
   // The time when we started benchmarking.
   base::TimeTicks start_;
   // The last time we got a paint notification.
   base::TimeTicks last_paint_;
   // Scoping so we can be sure our timeouts don't outlive us.
   base::OneShotTimer<NewTabUI> timer_;
   // The preference version. This used for migrating prefs of the NTP.
   static const int current_pref_version_ = 3;
 
   DISALLOW_COPY_AND_ASSIGN(NewTabUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_UI_H_