chromeos: Make InputEventsBlocker NOTIMPLEMENTED for mash

chrome/browser/chromeos/login/session/user_session_manager.cc

Index: chrome/browser/chromeos/login/session/user_session_manager.cc
diff --git a/chrome/browser/chromeos/login/session/user_session_manager.cc b/chrome/browser/chromeos/login/session/user_session_manager.cc
index 311d553277239d9407b6520c099f3ef8336b967f..f6591e257a203969056bd2de8dfc40ce98fd3ec7 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.cc
+++ b/chrome/browser/chromeos/login/session/user_session_manager.cc
@@ -1736,12 +1736,6 @@ void UserSessionManager::RespectLocalePreferenceWrapper(
   if (browser_shutdown::IsTryingToQuit())
     return;
 
-  // InputEventsBlocker is not available in Mash
-  if (chrome::IsRunningInMash()) {
-    callback.Run();
-    return;
-  }
-
   const user_manager::User* const user =
       ProfileHelper::Get()->GetUserByProfile(profile);
   locale_util::SwitchLanguageCallback locale_switched_callback(base::Bind(