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

chrome/browser/ui/gtk/browser_window_gtk.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_GTK_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 230 matching lines @@
   // Tells GTK that the toolbar area is invalidated and needs redrawing. We
   // have this method as a hack because GTK doesn't queue the toolbar area for
   // redraw when it should.
   void QueueToolbarRedraw();
 
   // Get the position where the infobar arrow should be anchored in
   // |relative_to| coordinates. This is the middle of the omnibox location icon.
   int GetXPositionOfLocationIcon(GtkWidget* relative_to);
 
  protected:
-  virtual void DestroyBrowser();
+  virtual void DestroyBrowser() OVERRIDE;
 
   // Checks to see if the mouse pointer at |x|, |y| is over the border of the
   // custom frame (a spot that should trigger a window resize). Returns true if
   // it should and sets |edge|.
   virtual bool GetWindowEdge(int x, int y, GdkWindowEdge* edge);
 
   virtual bool HandleTitleBarLeftMousePress(GdkEventButton* event,
                                             guint32 last_click_time,
                                             gfx::Point last_click_position);
 
@@ skipping 268 matching lines @@
   // be called. This should only be enabled in tests where the debounce timeout
   // introduces timing issues (e.g. in OmniBoxApiTest it dismisses the
   // autocomplete popup before the results can be read) and the final window
   // position is unimportant.
   bool debounce_timer_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_