ash: Cleanup class/struct forward declarations

ash/common/system/ime/tray_ime_chromeos.h

 // Copyright 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.
 
 #ifndef ASH_COMMON_SYSTEM_IME_TRAY_IME_CHROMEOS_H_
 #define ASH_COMMON_SYSTEM_IME_TRAY_IME_CHROMEOS_H_
 
 #include <stddef.h>
 
 #include "ash/common/system/accessibility_observer.h"
 #include "ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h"
 #include "ash/common/system/ime/ime_observer.h"
 #include "ash/common/system/tray/ime_info.h"
 #include "ash/common/system/tray/system_tray_item.h"
 #include "base/macros.h"
 
-namespace views {
-class Label;
-}
-
 namespace ash {
 
 namespace tray {
 class IMEDefaultView;
 class IMEDetailedView;
-class IMENotificationView;
 }
 
 class TrayItemView;
 
 class ASH_EXPORT TrayIME : public SystemTrayItem,
                            public IMEObserver,
                            public AccessibilityObserver,
                            public VirtualKeyboardObserver {
  public:
   explicit TrayIME(SystemTray* system_tray);
@@ skipping 47 matching lines @@
   IMEPropertyInfoList property_list_;
   // Whether the IME label and tray items should be visible.
   bool is_visible_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayIME);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_IME_TRAY_IME_CHROMEOS_H_