Fix namespace for src/ui/display/.

ash/display/window_tree_host_manager.h

 // 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.
 
 #ifndef ASH_DISPLAY_WINDOW_TREE_HOST_MANAGER_H_
 #define ASH_DISPLAY_WINDOW_TREE_HOST_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 140 matching lines @@
   // aura::WindowTreeHostObserver overrides:
   void OnHostResized(const aura::WindowTreeHost* host) override;
 
   // display::DisplayManager::Delegate overrides:
   void CreateOrUpdateMirroringDisplay(
       const display::DisplayInfoList& info_list) override;
   void CloseMirroringDisplayIfNotNecessary() override;
   void PreDisplayConfigurationChange(bool clear_focus) override;
   void PostDisplayConfigurationChange(bool must_clear_window) override;
 #if defined(OS_CHROMEOS)
-  ui::DisplayConfigurator* display_configurator() override;
+  display::DisplayConfigurator* display_configurator() override;
 #endif
 
   // ui::internal::InputMethodDelegate overrides:
   ui::EventDispatchDetails DispatchKeyEventPostIME(
       ui::KeyEvent* event) override;
 
   InputMethodEventHandler* input_method_event_handler() {
     return input_method_event_handler_.get();
   }
 
@@ skipping 43 matching lines @@
   int64_t cursor_display_id_for_restore_;
 
   base::WeakPtrFactory<WindowTreeHostManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_WINDOW_TREE_HOST_MANAGER_H_