Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/ui/browser_window.h

 // Copyright 2012 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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 
 #include "base/callback_forward.h"
 #include "chrome/browser/lifetime/browser_close_manager.h"
 #include "chrome/browser/signin/signin_header_helper.h"
 #include "chrome/browser/translate/chrome_translate_client.h"
 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_exit_bubble_type.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/sync/one_click_signin_sync_starter.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "components/translate/core/common/translate_errors.h"
+#include "ui/base/accelerators/accelerator.h"
 #include "ui/base/base_window.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
 class BrowserWindowTesting;
 class DownloadShelf;
 class FindBar;
 class GURL;
 class LocationBar;
@@ skipping 366 matching lines @@
 
   // Returns the height inset for RenderView when detached bookmark bar is
   // shown.  Invoked when a new RenderHostView is created for a non-NTP
   // navigation entry and the bookmark bar is detached.
   virtual int GetRenderViewHeightInsetWithDetachedBookmarkBar() = 0;
 
   // Executes |command| registered by |extension|.
   virtual void ExecuteExtensionCommand(const extensions::Extension* extension,
                                        const extensions::Command& command) = 0;
 
+  // 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.

+  virtual bool IsExtensionCommandRegistered(
+      const ui::Accelerator& accelerator) = 0;
+
  protected:
   friend class BrowserCloseManager;
   friend class BrowserView;
   virtual void DestroyBrowser() = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_