Make InputMethodEngine manage its descriptor.

chromeos/ime/input_method_manager.h

Index: chromeos/ime/input_method_manager.h
diff --git a/chromeos/ime/input_method_manager.h b/chromeos/ime/input_method_manager.h
index 56ab1c02d0c756b2aece8fe26a554ffec3034293..f293882e0b51152335ef824901033b1e08b5edbb 100644
--- a/chromeos/ime/input_method_manager.h
+++ b/chromeos/ime/input_method_manager.h
@@ -22,7 +22,6 @@ namespace chromeos {
 class ComponentExtensionIMEManager;
 class InputMethodEngineInterface;
 namespace input_method {
-
 class InputMethodUtil;
 class XKeyboard;
 
@@ -137,12 +136,7 @@ class CHROMEOS_EXPORT InputMethodManager {
   // Adds an input method extension. This function does not takes ownership of
   // |instance|.
   virtual void AddInputMethodExtension(
-      const std::string& id,
-      const std::string& name,
-      const std::vector<std::string>& layouts,
-      const std::vector<std::string>& languages,
-      const GURL& options_url,
-      const GURL& inputview_url,
+      const std::string& imm_id,
       InputMethodEngineInterface* instance) = 0;
 
   // Removes an input method extension.