Add an option in language settings for activating the IME menu.

chrome/browser/chromeos/extensions/input_method_api.h

 // Copyright (c) 2011 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_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_INPUT_METHOD_API_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_function.h"
 
 namespace chromeos {
 class ExtensionDictionaryEventRouter;
 class ExtensionInputMethodEventRouter;
+class ExtensionImeMenuEventRouter;
 }
 
 namespace extensions {
 
 // Implements the inputMethodPrivate.getInputMethodConfig  method.
 class GetInputMethodConfigFunction : public UIThreadExtensionFunction {
  public:
   GetInputMethodConfigFunction() {}
 
  protected:
@@ skipping 102 matching lines @@
                              INPUTMETHODPRIVATE_GETENCRYPTSYNCENABLED)
   DISALLOW_COPY_AND_ASSIGN(GetEncryptSyncEnabledFunction);
 };
 
 class InputMethodAPI : public BrowserContextKeyedAPI,
                        public extensions::EventRouter::Observer {
  public:
   static const char kOnDictionaryChanged[];
   static const char kOnDictionaryLoaded[];
   static const char kOnInputMethodChanged[];
+  static const char kOnImeMenuActivated[];
+  static const char kOnImeMenuDeactivated[];
 
   explicit InputMethodAPI(content::BrowserContext* context);
   ~InputMethodAPI() override;
 
   // Returns input method name for the given XKB (X keyboard extensions in X
   // Window System) id.
   static std::string GetInputMethodForXkb(const std::string& xkb_id);
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<InputMethodAPI>* GetFactoryInstance();
@@ skipping 13 matching lines @@
   }
   static const bool kServiceIsNULLWhileTesting = true;
 
   content::BrowserContext* const context_;
 
   // Created lazily upon OnListenerAdded.
   scoped_ptr<chromeos::ExtensionInputMethodEventRouter>
       input_method_event_router_;
   scoped_ptr<chromeos::ExtensionDictionaryEventRouter>
       dictionary_event_router_;
+  scoped_ptr<chromeos::ExtensionImeMenuEventRouter> ime_menu_event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodAPI);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_INPUT_METHOD_API_H_