Revert of Replaced BackgroundAnimator with ShelfBackgroundAnimator.

ash/shelf/shelf.cc

 // 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.
 
 #include "ash/shelf/shelf.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "ash/aura/wm_window_aura.h"
@@ skipping 23 matching lines @@
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
 
 const char Shelf::kNativeViewName[] = "ShelfView";
 
 Shelf::Shelf(ShelfModel* shelf_model,
              WmShelf* wm_shelf,
-             ShelfWidget* shelf_widget,
-             ShelfBackgroundAnimator* background_animator)
+             ShelfWidget* shelf_widget)
     : wm_shelf_(wm_shelf),
       shelf_widget_(shelf_widget),
       shelf_view_(new ShelfView(shelf_model,
                                 WmShell::Get()->shelf_delegate(),
                                 wm_shelf,
-                                this,
-                                background_animator)),
+                                this)),
       shelf_locking_manager_(wm_shelf) {
   DCHECK(wm_shelf_);
   shelf_view_->Init();
   shelf_widget_->GetContentsView()->AddChildView(shelf_view_);
   shelf_widget_->GetNativeView()->SetName(kNativeViewName);
 }
 
 Shelf::~Shelf() {
   WmShell::Get()->shelf_delegate()->OnShelfDestroyed(this);
 }
@@ skipping 149 matching lines @@
 
 gfx::Rect Shelf::GetVisibleItemsBoundsInScreen() const {
   return shelf_view_->GetVisibleItemsBoundsInScreen();
 }
 
 app_list::ApplicationDragAndDropHost* Shelf::GetDragAndDropHostForAppList() {
   return shelf_view_;
 }
 
 }  // namespace ash