mash: Have chrome set itself as the app list presenter.

ash/common/wm_shell.cc

 // Copyright 2016 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/wm_shell.h"
 
 #include <utility>
 
 #include "ash/common/accelerators/accelerator_controller.h"
 #include "ash/common/accelerators/ash_focus_manager_factory.h"
@@ skipping 230 matching lines @@
   shelf_delegate_ = std::move(test_delegate);
 }
 
 void WmShell::SetPaletteDelegateForTesting(
     std::unique_ptr<PaletteDelegate> palette_delegate) {
   palette_delegate_ = std::move(palette_delegate);
 }
 
 WmShell::WmShell(std::unique_ptr<ShellDelegate> shell_delegate)
     : delegate_(std::move(shell_delegate)),
+      app_list_(base::MakeUnique<app_list::AppList>()),
       cast_config_(base::MakeUnique<CastConfigController>()),
       focus_cycler_(base::MakeUnique<FocusCycler>()),
       immersive_context_(base::MakeUnique<ImmersiveContextAsh>()),
       locale_notification_controller_(
           base::MakeUnique<LocaleNotificationController>()),
       new_window_controller_(base::MakeUnique<NewWindowController>()),
       shelf_controller_(base::MakeUnique<ShelfController>()),
       shutdown_controller_(base::MakeUnique<ShutdownController>()),
       system_tray_controller_(base::MakeUnique<SystemTrayController>()),
       system_tray_notifier_(base::MakeUnique<SystemTrayNotifier>()),
@@ skipping 143 matching lines @@
 void WmShell::DeleteToastManager() {
   toast_manager_.reset();
 }
 
 void WmShell::SetAcceleratorController(
     std::unique_ptr<AcceleratorController> accelerator_controller) {
   accelerator_controller_ = std::move(accelerator_controller);
 }
 
 }  // namespace ash