[Media Router] Adds a contextual menu item to remove the MR component action.

chrome/browser/ui/toolbar/toolbar_actions_model.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
@@ skipping 147 matching lines @@
       ToolbarActionsBar* bar);
   scoped_ptr<ToolbarActionViewController> CreateActionForItem(
       Browser* browser,
       ToolbarActionsBar* bar,
       const ToolbarItem& item);
 
   const std::vector<ToolbarItem>& toolbar_items() const {
     return is_highlighting() ? highlighted_items_ : toolbar_items_;
   }
 
+  extensions::ComponentMigrationHelper* component_migration_helper() {
+    return component_migration_helper_.get();
+  }
+
   bool is_highlighting() const { return highlight_type_ != HIGHLIGHT_NONE; }
   HighlightType highlight_type() const { return highlight_type_; }
   bool highlighting_for_toolbar_redesign() const {
     return highlighting_for_toolbar_redesign_;
   }
 
   void SetActionVisibility(const std::string& action_id, bool visible);
 
   // ComponentMigrationHelper::ComponentActionDelegate:
   void AddComponentAction(const std::string& action_id) override;
@@ skipping 151 matching lines @@
   // For observing change of toolbar order preference by external entity (sync).
   PrefChangeRegistrar pref_change_registrar_;
   base::Closure pref_change_callback_;
 
   base::WeakPtrFactory<ToolbarActionsModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsModel);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_