Relocate display_manager from ash to ui

ash/display/display_configuration_controller.h

 // 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.
 
 #ifndef ASH_DISPLAY_DISPLAY_CONFIGURATION_CONTROLLER_H_
 #define ASH_DISPLAY_DISPLAY_CONFIGURATION_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/display/display.h"
 
 namespace display {
 class DisplayLayout;
+class DisplayManager;
 }
 
 namespace ash {
 
 namespace test {
 class ShellTestApi;
 }  // namespace test
 
 class DisplayAnimator;
-class DisplayManager;
 
 // This class controls Display related configuration. Specifically it:
 // * Handles animated transitions where appropriate.
 // * Limits the frequency of certain operations.
 // * Provides a single interface for UI and API classes.
 // * TODO: Forwards display configuration changed events to UI and API classes.
 class ASH_EXPORT DisplayConfigurationController
     : public WindowTreeHostManager::Observer {
  public:
   DisplayConfigurationController(
-      DisplayManager* display_manager,
+      display::DisplayManager* display_manager,
       WindowTreeHostManager* window_tree_host_manager);
   ~DisplayConfigurationController() override;
 
   // Sets the layout for the current displays with a fade in/out
   // animation. Currently |display_id| is assumed to be the secondary
   // display.  TODO(oshima/stevenjb): Support 3+ displays.
   void SetDisplayLayout(std::unique_ptr<display::DisplayLayout> layout,
                         bool user_action);
 
   // Sets the mirror mode with a fade-in/fade-out animation. Affects all
@@ skipping 22 matching lines @@
   class DisplayChangeLimiter;
 
   // Sets the timeout for the DisplayChangeLimiter if it exists. Call this
   // *before* starting any animations.
   void SetThrottleTimeout(int64_t throttle_ms);
   bool IsLimited();
   void SetDisplayLayoutImpl(std::unique_ptr<display::DisplayLayout> layout);
   void SetMirrorModeImpl(bool mirror);
   void SetPrimaryDisplayIdImpl(int64_t display_id);
 
-  DisplayManager* display_manager_;                  // weak ptr
+  display::DisplayManager* display_manager_;         // weak ptr
   WindowTreeHostManager* window_tree_host_manager_;  // weak ptr
   std::unique_ptr<DisplayAnimator> display_animator_;
   std::unique_ptr<DisplayChangeLimiter> limiter_;
 
   base::WeakPtrFactory<DisplayConfigurationController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayConfigurationController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_CONFIGURATION_CONTROLLER_H_