Move all white-listed input method indicator text from InputMethodUtil to manifests of IME extensio…

chromeos/ime/component_extension_ime_manager.h

Index: chromeos/ime/component_extension_ime_manager.h
diff --git a/chromeos/ime/component_extension_ime_manager.h b/chromeos/ime/component_extension_ime_manager.h
index 98e0bbc26a62779d5a0f0ff19c963bec95fa7134..0fcaded1529e59b6146bb738399cb289941fe8a9 100644
--- a/chromeos/ime/component_extension_ime_manager.h
+++ b/chromeos/ime/component_extension_ime_manager.h
@@ -24,6 +24,7 @@ struct CHROMEOS_EXPORT ComponentExtensionEngine {
   ~ComponentExtensionEngine();
   std::string engine_id;  // The engine id.
   std::string display_name;  // The display name.
+  std::string indicator;  // The indicator text.
   std::vector<std::string> language_codes;  // The engine's language(ex. "en").
   std::string description;  // The engine description.
   std::vector<std::string> layouts;  // The list of keyboard layout of engine.