IME refactoring: ChromeOS introduce input methods State.

chrome/browser/chromeos/preferences.h

Index: chrome/browser/chromeos/preferences.h
diff --git a/chrome/browser/chromeos/preferences.h b/chrome/browser/chromeos/preferences.h
index 3ba680fdda6ae4bc5ebe2c9b5b33e71af839b3ab..4cf6a13f2a4365b50ead702bfb55efbd07ed7e48 100644
--- a/chrome/browser/chromeos/preferences.h
+++ b/chrome/browser/chromeos/preferences.h
@@ -14,6 +14,7 @@
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/chromeos/login/users/user_manager.h"
 #include "chrome/browser/prefs/pref_service_syncable_observer.h"
+#include "chromeos/ime/input_method_manager.h"
 
 class PrefRegistrySimple;
 class PrefService;
@@ -105,6 +106,8 @@ class Preferences : public PrefServiceSyncableObserver,
   // Overriden form UserManager::UserSessionStateObserver.
   virtual void ActiveUserChanged(const User* active_user) OVERRIDE;
 
+  void ActivateInputMethods(const User* active_user);
+
   PrefServiceSyncable* prefs_;
 
   input_method::InputMethodManager* input_method_manager_;
@@ -139,6 +142,10 @@ class Preferences : public PrefServiceSyncableObserver,
   // Whether user is a primary user.
   bool user_is_primary_;
 
+  // Reconfigure ime_state_ after user becomes active.
+  bool ime_state_outdated_;
+  scoped_refptr<input_method::InputMethodManager::State> ime_state_;
+
   DISALLOW_COPY_AND_ASSIGN(Preferences);
 };