Added default implementations of GetAcceleratorForCommandId.

chrome/browser/extensions/extension_context_menu_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_EXTENSIONS_EXTENSION_CONTEXT_MENU_MODEL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_CONTEXT_MENU_MODEL_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 62 matching lines @@
   // ShowPopupForDevToolsWindow() to be called on |delegate|.
   ExtensionContextMenuModel(const Extension* extension,
                             Browser* browser,
                             ButtonVisibility visibility,
                             PopupDelegate* delegate);
   ~ExtensionContextMenuModel() override;
 
   // SimpleMenuModel::Delegate:
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
-  bool GetAcceleratorForCommandId(int command_id,
-                                  ui::Accelerator* accelerator) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
 
   ui::SimpleMenuModel* page_access_submenu_for_testing() {
     return page_access_submenu_.get();
   }
 
  private:
   void InitMenu(const Extension* extension, ButtonVisibility button_visibility);
 
   void CreatePageAccessSubmenu(const Extension* extension);
@@ skipping 41 matching lines @@
   std::unique_ptr<ContextMenuMatcher> extension_items_;
 
   std::unique_ptr<ui::SimpleMenuModel> page_access_submenu_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionContextMenuModel);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_CONTEXT_MENU_MODEL_H_