fix "IME changed" notification uses a wrong field of IME

ash/system/ime/tray_ime.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/system/ime/tray_ime.h"
 
 #include <vector>
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
@@ skipping 201 matching lines @@
   views::Label* GetLabel() {
     SystemTrayDelegate* delegate = Shell::GetInstance()->tray_delegate();
     IMEInfo current;
     delegate->GetCurrentIME(&current);
 
     // TODO(zork): Use IDS_ASH_STATUS_TRAY_THIRD_PARTY_IME_TURNED_ON_BUBBLE for
     // third party IMEs
     return new views::Label(
         l10n_util::GetStringFUTF16(
             IDS_ASH_STATUS_TRAY_IME_TURNED_ON_BUBBLE,
-            current.short_name));
+            current.medium_name));
   }
 
 
   int autoclose_delay_;
   base::OneShotTimer<IMENotificationView> autoclose_;
 
   DISALLOW_COPY_AND_ASSIGN(IMENotificationView);
 };
 
 
@@ skipping 104 matching lines @@
       notification_->UpdateLabel();
     } else if (!Shell::GetInstance()->shelf()->IsVisible() || !message_shown_) {
       ShowNotificationView();
       message_shown_ = true;
     }
   }
 }
 
 }  // namespace internal
 }  // namespace ash