chromeos: removes mash shadows

ash/mus/window_manager.h

 // 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.
 
 #ifndef ASH_MUS_WINDOW_MANAGER_H_
 #define ASH_MUS_WINDOW_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 30 matching lines @@
 
 namespace ash {
 
 class RootWindowController;
 class ScreenMus;
 class ShellDelegate;
 
 namespace mus {
 
 class AcceleratorHandler;
-class ShadowController;
 class WmLookupMus;
 class WmTestHelper;
 
 // WindowManager serves as the WindowManagerDelegate and
 // WindowTreeClientDelegate for mash. WindowManager creates (and owns)
 // a RootWindowController per Display. WindowManager takes ownership of
 // the WindowTreeClient.
 class WindowManager : public aura::WindowManagerDelegate,
                       public aura::WindowTreeClientDelegate {
  public:
@@ skipping 110 matching lines @@
   std::unique_ptr<::wm::WMState> wm_state_;
   std::unique_ptr<aura::PropertyConverter> property_converter_;
 
   std::unique_ptr<aura::WindowTreeClient> window_tree_client_;
 
   aura::WindowManagerClient* window_manager_client_ = nullptr;
 
   std::unique_ptr<views::PointerWatcherEventRouter>
       pointer_watcher_event_router_;
 
-  std::unique_ptr<ShadowController> shadow_controller_;
-
   RootWindowControllers root_window_controllers_;
 
   std::unique_ptr<ScreenMus> screen_;
 
   bool created_shell_ = false;
 
   std::unique_ptr<WmLookupMus> lookup_;
 
   std::map<uint16_t, AcceleratorHandler*> accelerator_handlers_;
   uint16_t next_accelerator_namespace_id_ = 0u;
 
   scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
 
   // Only set in tests. If non-null this is used as the shell delegate.
   std::unique_ptr<ShellDelegate> shell_delegate_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_H_