Add a new GetInstance() method for remaining files with singleton classes under chrome/browser.

chrome/browser/gtk/accelerators_gtk.h

 // Copyright (c) 2010 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_GTK_ACCELERATORS_GTK_H_
 #define CHROME_BROWSER_GTK_ACCELERATORS_GTK_H_
 #pragma once
 
 #include "app/menus/accelerator_gtk.h"
 #include "base/hash_tables.h"
 
+template <typename T> struct DefaultSingletonTraits;
+
 class AcceleratorsGtk {
  public:
-  AcceleratorsGtk();
-  ~AcceleratorsGtk();
-
   typedef std::vector<std::pair<int, menus::AcceleratorGtk> >
       AcceleratorGtkList;
   typedef AcceleratorGtkList::const_iterator const_iterator;
 
+  // Returns the singleton instance.
+  static AcceleratorsGtk* GetInstance();
+
   const_iterator const begin() {
     return all_accelerators_.begin();
   }
 
   const_iterator const end() {
     return all_accelerators_.end();
   }
 
   // Returns NULL if there is no accelerator for the command.
   const menus::AcceleratorGtk* GetPrimaryAcceleratorForCommand(int command_id);
 
  private:
+  friend struct DefaultSingletonTraits<AcceleratorsGtk>;
+
+  AcceleratorsGtk();
+  ~AcceleratorsGtk();
+
   base::hash_map<int, menus::AcceleratorGtk> primary_accelerators_;
 
   AcceleratorGtkList all_accelerators_;
 };
 
 #endif  // CHROME_BROWSER_GTK_ACCELERATORS_GTK_H_