try 3 of: Split out InputMethodMenuManager from InputMethodManager.

chrome/browser/chromeos/extensions/input_method_event_router.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_CHROMEOS_EXTENSIONS_INPUT_METHOD_EVENT_ROUTER_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_INPUT_METHOD_EVENT_ROUTER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 class ExtensionInputMethodEventRouter
     : public input_method::InputMethodManager::Observer {
  public:
   explicit ExtensionInputMethodEventRouter(content::BrowserContext* context);
   virtual ~ExtensionInputMethodEventRouter();
 
   // Implements input_method::InputMethodManager::Observer:
   virtual void InputMethodChanged(
       input_method::InputMethodManager* manager,
       bool show_message) OVERRIDE;
-  virtual void InputMethodPropertyChanged(
-      input_method::InputMethodManager* manager) OVERRIDE {}
 
  private:
   content::BrowserContext* context_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionInputMethodEventRouter);
 };
 
 }  // namespace chromeos
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_INPUT_METHOD_EVENT_ROUTER_H_