ash: Explicitly teach various components about ShelfLayoutManager.

ash/shelf/overflow_bubble_view.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_OVERFLOW_BUBBLE_VIEW_H_
 #define ASH_SHELF_OVERFLOW_BUBBLE_VIEW_H_
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/views/bubble/bubble_delegate.h"
 
 namespace ash {
-class ShelfLayoutManager;
 class ShelfView;
 
 namespace test {
 class OverflowBubbleViewTestAPI;
 }
 
 // OverflowBubbleView hosts a ShelfView to display overflown items.
 // Exports to access this class from OverflowBubbleViewTestAPI.
 class ASH_EXPORT OverflowBubbleView : public views::BubbleDelegateView {
  public:
@@ skipping 20 matching lines @@
 
   // views::View overrides:
   gfx::Size GetPreferredSize() const override;
   void Layout() override;
   void ChildPreferredSizeChanged(views::View* child) override;
   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
 
   // ui::EventHandler overrides:
   void OnScrollEvent(ui::ScrollEvent* event) override;
 
-  ShelfLayoutManager* GetShelfLayoutManager() const;
-
   ShelfView* shelf_view_;  // Owned by views hierarchy.
   gfx::Vector2d scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubbleView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_VIEW_H_