[IME] Removes the duplicated IMEs in chrome://settings/languages, and support async component IMEs …

chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.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_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/webui/options/language_options_handler.h"
 #include "chromeos/ime/component_extension_ime_manager.h"
@@ skipping 77 matching lines @@
 
   // Called when the input method is enabled.
   // |args| will contain the input method ID as string (ex. "mozc").
   void InputMethodEnableCallback(const base::ListValue* args);
 
   // Called when the input method options page is opened.
   // |args| will contain the input method ID as string (ex. "mozc").
   void InputMethodOptionsOpenCallback(const base::ListValue* args);
 
   // ComponentExtensionIMEManager::Observer override.
-  virtual void OnInitialized() OVERRIDE;
+  virtual void OnImeComponentExtensionInitialized() OVERRIDE;
 
   // Gets the list of languages with |descriptors| based on
   // |base_language_codes|.
   // |insert_divider| means to insert entry with "code" attribute set to
   // kVendorOtherLanguagesListDivider between "most relevant" languages and
   // other.
   static base::ListValue* GetLanguageListInternal(
       const input_method::InputMethodDescriptors& descriptors,
       const std::vector<std::string>& base_language_codes,
       bool insert_divider);
 
   // OptionsPageUIHandler implementation.
   virtual void InitializePage() OVERRIDE;
 
   // True if the component extension list was appended into input method list.
   bool composition_extension_appended_;
 
   // True if this page was initialized.
   bool is_page_initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(CrosLanguageOptionsHandler);
 };
 
 }  // namespace options
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_CROS_LANGUAGE_OPTIONS_HANDLER_H_