Moves Shell::maximize_mode_controller() to WmShell

ash/app_list/app_list_presenter_delegate.cc

 // 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.
 
 #include "ash/app_list/app_list_presenter_delegate.h"
 
 #include "ash/common/ash_switches.h"
 #include "ash/common/shelf/shelf_types.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
@@ skipping 139 matching lines @@
   view_ = view;
   aura::Window* root_window = Shell::GetInstance()
                                   ->window_tree_host_manager()
                                   ->GetRootWindowForDisplayId(display_id);
   aura::Window* container = GetRootWindowController(root_window)
                                 ->GetContainer(kShellWindowId_AppListContainer);
   AppListButton* applist_button =
       Shelf::ForWindow(container)->GetAppListButton();
   is_centered_ = view->ShouldCenterWindow();
   bool is_fullscreen = IsFullscreenAppListEnabled() &&
-                       Shell::GetInstance()
+                       WmShell::Get()
                            ->maximize_mode_controller()
                            ->IsMaximizeModeWindowManagerEnabled();
   if (is_fullscreen) {
     view->InitAsFramelessWindow(
         container, current_apps_page,
         ScreenUtil::GetDisplayWorkAreaBoundsInParent(container));
   } else if (is_centered_) {
     // Note: We can't center the app list until we have its dimensions, so we
     // init at (0, 0) and then reset its anchor point.
     view->InitAsBubbleAtFixedLocation(container, current_apps_page,
@@ skipping 166 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AppListPresenterDelegate, ShelfIconObserver implementation:
 
 void AppListPresenterDelegate::OnShelfIconPositionsChanged() {
   UpdateBounds();
 }
 
 }  // namespace ash