Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/ui/views/toolbar/toolbar_view.h

 // Copyright 2013 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_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_
 
 #include <set>
 #include <string>
 
@@ skipping 121 matching lines @@
   // CommandObserver:
   virtual void EnabledStateChangedForCommand(int id, bool enabled) OVERRIDE;
 
   // views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // views::WidgetObserver:
   virtual void OnWidgetVisibilityChanged(views::Widget* widget,
                                          bool visible) OVERRIDE;
+  virtual void OnWidgetDestroyed(views::Widget* widget) OVERRIDE;
 
   // content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // ui::AcceleratorProvider:
   virtual bool GetAcceleratorForCommandId(
       int command_id, ui::Accelerator* accelerator) OVERRIDE;
 
@@ skipping 100 matching lines @@
 
   // A list of listeners to call when the menu opens.
   ObserverList<views::MenuListener> menu_listeners_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ToolbarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_