Rename Launcher to Shelf.

ash/system/tray/system_tray_item.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_TRAY_SYSTEM_TRAY_ITEM_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_ITEM_H_
 
 #include "ash/ash_export.h"
 #include "ash/shelf/shelf_types.h"
 #include "ash/system/user/login_status.h"
@@ skipping 83 matching lines @@
 
   // Shows a notification for this item.
   void ShowNotificationView();
 
   // Hides the notification for this item.
   void HideNotificationView();
 
   // Returns true if item should hide the arrow.
   virtual bool ShouldHideArrow() const;
 
-  // Returns true if this item needs to force the launcher to be visible when
-  // the launcher is in the auto-hide state. Default is true.
-  virtual bool ShouldShowLauncher() const;
+  // Returns true if this item needs to force the shelf to be visible when
+  // the shelf is in the auto-hide state. Default is true.
+  virtual bool ShouldShowShelf() const;
 
   // Returns the system tray that this item belongs to.
   SystemTray* system_tray() const { return system_tray_; }
 
   bool restore_focus() const { return restore_focus_; }
   void set_restore_focus(bool restore_focus) {
     restore_focus_ = restore_focus;
   }
 
  private:
   SystemTray* system_tray_;
   bool restore_focus_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayItem);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_ITEM_H_