Moves app_list() and related functions from Shell to WmShell

ash/accelerators/accelerator_interactive_uitest_chromeos.cc

 // Copyright 2015 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/accelerators/accelerator_controller.h"
 
 #include "ash/common/shell_observer.h"
 #include "ash/common/system/chromeos/network/network_observer.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
@@ skipping 182 matching lines @@
   EXPECT_FALSE(network_observer.wifi_enabled_status());
 
   WmShell::Get()->system_tray_notifier()->RemoveNetworkObserver(
       &network_observer);
 }
 
 // Tests the app list accelerator.
 TEST_F(AcceleratorInteractiveUITest, MAYBE_ToggleAppList) {
   mojo::edk::Init();
   app_list::test::TestAppListPresenter test_app_list_presenter;
-  WmShell::Get()->app_list()->SetAppListPresenter(
+  Shell::Get()->app_list()->SetAppListPresenter(
       test_app_list_presenter.CreateInterfacePtrAndBind());
 
   EXPECT_EQ(0u, test_app_list_presenter.toggle_count());
   SendKeyPressSync(ui::VKEY_LWIN, false, false, false);
   RunAllPendingInMessageLoop();
   EXPECT_EQ(1u, test_app_list_presenter.toggle_count());
   SendKeyPressSync(ui::VKEY_LWIN, false, false, false);
   RunAllPendingInMessageLoop();
   EXPECT_EQ(2u, test_app_list_presenter.toggle_count());
 }
 
 }  // namespace test
 }  // namespace ash