Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // Copyright (c) 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.
 
 #include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 38 matching lines @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/translate/core/browser/language_state.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
+#include "ui/base/accelerators/accelerator.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/gfx/rect.h"
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
 #import "chrome/browser/ui/cocoa/one_click_signin_bubble_controller.h"
 #import "chrome/browser/ui/cocoa/one_click_signin_dialog_controller.h"
 #endif
 
 using content::NativeWebKeyboardEvent;
 using content::SSLStatus;
@@ skipping 650 matching lines @@
   if (browser_->bookmark_bar_state() != BookmarkBar::DETACHED)
     return 0;
   return 40;
 }
 
 void BrowserWindowCocoa::ExecuteExtensionCommand(
     const extensions::Extension* extension,
     const extensions::Command& command) {
   [cocoa_controller() executeExtensionCommand:extension->id() command:command];
 }
+
+bool BrowserWindowCocoa::IsExtensionCommandRegistered(
+    const ui::Accelerator& accelerator) {
+  return [cocoa_controller()
+      isExtensionCommandRegisteredForAccelerator:accelerator];
+}