Replaces ::ui:: with ui:: in ash

ash/mus/shadow_controller.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_SHADOW_CONTROLLER_H_
 #define ASH_MUS_SHADOW_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "services/ui/public/cpp/window_observer.h"
 #include "services/ui/public/cpp/window_tree_client_observer.h"
 
 namespace ui {
 class WindowTreeClient;
 }
 
 namespace ash {
 namespace mus {
 
-class ShadowController : public ::ui::WindowTreeClientObserver,
-                         public ::ui::WindowObserver {
+class ShadowController : public ui::WindowTreeClientObserver,
+                         public ui::WindowObserver {
  public:
-  explicit ShadowController(::ui::WindowTreeClient* window_tree);
+  explicit ShadowController(ui::WindowTreeClient* window_tree);
   ~ShadowController() override;
 
  private:
-  void SetActiveWindow(::ui::Window* window);
+  void SetActiveWindow(ui::Window* window);
 
   // ui::WindowTreeClientObserver:
-  void OnWindowTreeFocusChanged(::ui::Window* gained_focus,
-                                ::ui::Window* lost_focus) override;
+  void OnWindowTreeFocusChanged(ui::Window* gained_focus,
+                                ui::Window* lost_focus) override;
 
   // ui::WindowObserver:
-  void OnWindowDestroying(::ui::Window* window) override;
+  void OnWindowDestroying(ui::Window* window) override;
 
-  ::ui::WindowTreeClient* window_tree_;
-  ::ui::Window* active_window_;
+  ui::WindowTreeClient* window_tree_;
+  ui::Window* active_window_;
 
   DISALLOW_COPY_AND_ASSIGN(ShadowController);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_SHADOW_CONTROLLER_H_