Stop using shell::GetInstance()->system_tray() in system tray items

ash/system/ime/tray_ime.h

 // 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.
 
 #ifndef ASH_SYSTEM_IME_TRAY_IME_H_
 #define ASH_SYSTEM_IME_TRAY_IME_H_
 
 #include "ash/system/ime/ime_observer.h"
 #include "ash/system/tray/system_tray_item.h"
 
@@ skipping 19 matching lines @@
                 public IMEObserver {
  public:
   TrayIME();
   virtual ~TrayIME();
 
  private:
   void UpdateTrayLabel(const IMEInfo& info, size_t count);
 
   // Overridden from SystemTrayItem.
   virtual views::View* CreateTrayView(user::LoginStatus status) OVERRIDE;
-  virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
+  virtual views::View* CreateDefaultView(user::LoginStatus status,
+                                         int bubble_width) OVERRIDE;
   virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
   virtual views::View* CreateNotificationView(
       user::LoginStatus status) OVERRIDE;
   virtual void DestroyTrayView() OVERRIDE;
   virtual void DestroyDefaultView() OVERRIDE;
   virtual void DestroyDetailedView() OVERRIDE;
   virtual void DestroyNotificationView() OVERRIDE;
   virtual void UpdateAfterLoginStatusChange(user::LoginStatus status) OVERRIDE;
   virtual void UpdateAfterShelfAlignmentChange(
       ShelfAlignment alignment) OVERRIDE;
 
   // Overridden from IMEObserver.
   virtual void OnIMERefresh(bool show_message) OVERRIDE;
 
   TrayItemView* tray_label_;
   tray::IMEDefaultView* default_;
   tray::IMEDetailedView* detailed_;
   tray::IMENotificationView* notification_;
 
   bool message_shown_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayIME);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_IME_TRAY_IME_H_