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

chrome/browser/ui/webui/chromeos/login/network_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
index 344f0fcda9d7521db63c5e78ca6de56e159ae67c..69d33b805cc10f4f0ef1f046b2c170a3ff850c04 100644
--- a/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
@@ -13,6 +13,7 @@
 #include "chrome/browser/chromeos/login/screens/network_screen_actor.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
+#include "chromeos/ime/component_extension_ime_manager.h"
 #include "ui/gfx/point.h"
 
 class PrefRegistrySimple;
@@ -27,7 +28,8 @@ struct NetworkScreenHandlerOnLanguageChangedCallbackData;
 // WebUI implementation of NetworkScreenActor. It is used to interact with
 // the welcome screen (part of the page) of the OOBE.
 class NetworkScreenHandler : public NetworkScreenActor,
-                             public BaseScreenHandler {
+                             public BaseScreenHandler,
+                             public ComponentExtensionIMEManager::Observer {
  public:
   explicit NetworkScreenHandler(CoreOobeActor* core_oobe_actor);
   virtual ~NetworkScreenHandler();
@@ -51,6 +53,9 @@ class NetworkScreenHandler : public NetworkScreenActor,
   // WebUIMessageHandler implementation:
   virtual void RegisterMessages() OVERRIDE;
 
+  // ComponentExtensionIMEManager::Observer implementation:
+  virtual void OnInitialized() OVERRIDE;
+
   // Registers the preference for derelict state.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
@@ -58,9 +63,15 @@ class NetworkScreenHandler : public NetworkScreenActor,
   // Handles moving off the screen.
   void HandleOnExit();
 
-  // Handles change of the language.
+  // Handles change of the language, if the given locale is the same as current
+  // locale, it won't refresh the UI.
   void HandleOnLanguageChanged(const std::string& locale);
 
+  // Handles change of the language, the parameter force_refresh can control

[Yuki, 2014/03/07 07:47:04]

nit: s/force_refresh/|force_refresh|/
We use |code_snippet_or_symbol_name| style.

[Shu Chen, 2014/03/07 08:24:09]

Done. I've removed this.

+  // whether to forcibly refresh the UI.
+  void HandleOnLanguageChangedInternal(const std::string& locale,
+                                       bool force_refresh);
+
   // Async callback after ReloadResourceBundle(locale) completed.
   static void OnLanguageChangedCallback(
       scoped_ptr<NetworkScreenHandlerOnLanguageChangedCallbackData> context,