Fixed IsCurrentUserNew state for supervised users.

IsCurrentUserNew always returned true for supervised users after recent
refactoring of UserManager.

BUG=387614

Review URL: https://codereview.chromium.org/437233002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287366 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/login/users/chrome_user_manager.cc

@@ -633,7 +633,7 @@ void ChromeUserManager::SupervisedUserLoggedIn(const std::string& user_id) {
       SetIsCurrentUserNew(true);
       WallpaperManager::Get()->SetUserWallpaperNow(user_id);
     } else {
-      SetIsCurrentUserNew(true);
+      SetIsCurrentUserNew(false);
     }
   }