ash: Move AppList support to ShelfWidget, expose ShelfWidget in WmShelf

ash/common/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/common/shelf/shelf.h"
 
 #include "ash/common/shelf/shelf_delegate.h"
-#include "ash/common/shelf/shelf_view.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/wm_root_window_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 
 namespace ash {
 
 Shelf::Shelf(WmShelf* wm_shelf,
              ShelfView* shelf_view,
              ShelfWidget* shelf_widget)
@@ skipping 12 matching lines @@
 // static
 Shelf* Shelf::ForPrimaryDisplay() {
   return Shelf::ForWindow(WmShell::Get()->GetPrimaryRootWindow());
 }
 
 // static
 Shelf* Shelf::ForWindow(WmWindow* window) {
   return window->GetRootWindowController()->GetShelf()->shelf();
 }
 
-AppListButton* Shelf::GetAppListButton() const {
-  return shelf_view_->GetAppListButton();
-}
-
-app_list::ApplicationDragAndDropHost* Shelf::GetDragAndDropHostForAppList() {
-  return shelf_view_;
-}
-
 }  // namespace ash