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

chrome/browser/ui/gtk/js_modal_dialog_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_JS_MODAL_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_JS_MODAL_DIALOG_GTK_H_
 #pragma once
 
 #include "base/basictypes.h"
+#include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/gfx/native_widget_types.h"
 
 typedef struct _GtkWidget GtkWidget;
 
 class JavaScriptAppModalDialog;
 
 class JSModalDialogGtk : public NativeAppModalDialog {
  public:
   JSModalDialogGtk(JavaScriptAppModalDialog* dialog,
                    gfx::NativeWindow parent_window);
   virtual ~JSModalDialogGtk();
 
   // NativeAppModalDialog:
-  virtual int GetAppModalDialogButtons() const;
-  virtual void ShowAppModalDialog();
-  virtual void ActivateAppModalDialog();
-  virtual void CloseAppModalDialog();
-  virtual void AcceptAppModalDialog();
-  virtual void CancelAppModalDialog();
+  virtual int GetAppModalDialogButtons() const OVERRIDE;
+  virtual void ShowAppModalDialog() OVERRIDE;
+  virtual void ActivateAppModalDialog() OVERRIDE;
+  virtual void CloseAppModalDialog() OVERRIDE;
+  virtual void AcceptAppModalDialog() OVERRIDE;
+  virtual void CancelAppModalDialog() OVERRIDE;
 
  private:
   CHROMEGTK_CALLBACK_1(JSModalDialogGtk, void, OnResponse, int);
 
   scoped_ptr<JavaScriptAppModalDialog> dialog_;
   GtkWidget* gtk_dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(JSModalDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_JS_MODAL_DIALOG_GTK_H_