Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/ui/views/toolbar/browser_actions_container.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_BROWSER_ACTIONS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_
 
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
 #include "chrome/browser/extensions/extension_toolbar_model.h"
@@ skipping 169 matching lines @@
 
   // Returns how many browser actions will be visible once the container
   // finishes animating to a new size, or (if not animating) the currently
   // visible icons.
   size_t VisibleBrowserActionsAfterAnimation() const;
 
   // Executes |command| registered by |extension|.
   void ExecuteExtensionCommand(const extensions::Extension* extension,
                                const extensions::Command& command);
 
+  // Returns if the given |accelerator| is registered by an extension.

[Finnur, 2014/09/10 10:15:16]

nit: s/if/whether/

[David Tseng, 2014/09/10 21:19:07]

Done.

+  bool IsExtensionCommandRegistered(const ui::Accelerator& accelerator);
+
   // Add or remove an observer.
   void AddObserver(BrowserActionsContainerObserver* observer);
   void RemoveObserver(BrowserActionsContainerObserver* observer);
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual gfx::Size GetMinimumSize() const OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual bool GetDropFormats(int* formats,
       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
@@ skipping 217 matching lines @@
 
   // Handles delayed showing of the overflow menu when hovering.
   base::WeakPtrFactory<BrowserActionsContainer> show_menu_task_factory_;
 
   ObserverList<BrowserActionsContainerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_