chromeos: Rename ash::WmShelf to Shelf

ash/shelf/shelf_bezel_event_handler.h

 // Copyright 2013 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_SHELF_SHELF_BEZEL_EVENT_HANDLER_H_
 #define ASH_SHELF_SHELF_BEZEL_EVENT_HANDLER_H_
 
 #include "base/macros.h"
 #include "ui/events/event_handler.h"
 
 namespace gfx {
 class Point;
 class Rect;
 }
 
 namespace ash {
-class WmShelf;
+class Shelf;
 
 // Forwards touch gestures on a bezel sensor to the shelf.
 class ShelfBezelEventHandler : public ui::EventHandler {
  public:
-  explicit ShelfBezelEventHandler(WmShelf* shelf);
+  explicit ShelfBezelEventHandler(Shelf* shelf);
   ~ShelfBezelEventHandler() override;
 
   // Overridden from ui::EventHandler:
   void OnGestureEvent(ui::GestureEvent* event) override;
 
  private:
   bool IsShelfOnBezel(const gfx::Rect& screen, const gfx::Point& point) const;
 
-  WmShelf* shelf_;
+  Shelf* shelf_;
   bool in_touch_drag_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfBezelEventHandler);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_BEZEL_EVENT_HANDLER_H_