ash: Add RootWindowHostFactory class.

ash/display/display_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_DISPLAY_MANAGER_H_
 #define ASH_DISPLAY_DISPLAY_MANAGER_H_
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "ui/aura/root_window_observer.h"
 #include "ui/aura/window.h"
 
 namespace gfx {
 class Display;
 class Insets;
 class Rect;
 }
 
 namespace ash {
 class AcceleratorControllerTest;
 namespace test {
 class DisplayManagerTestApi;
 class SystemGestureEventFilterTest;
 }
 namespace internal {
+class DisplayManagerDelegate;
 
 // DisplayManager maintains the current display configurations,
 // and notifies observers when configuration changes.
 // This is exported for unittest.
 //
 // TODO(oshima): gfx::Screen needs to return translated coordinates
 // if the root window is translated. crbug.com/119268.
 class ASH_EXPORT DisplayManager : public aura::RootWindowObserver {
  public:
-  DisplayManager();
+  DisplayManager(DisplayManagerDelegate* delegate);
   virtual ~DisplayManager();
 
   // Used to emulate display change when run in a desktop environment instead
   // of on a device.
   static void CycleDisplay();
   static void ToggleDisplayScale();
 
   // When set to true, the MonitorManager calls OnDisplayBoundsChanged
   // even if the display's bounds didn't change. Used to swap primary
   // display.
@@ skipping 126 matching lines @@
   int64 internal_display_id_;
 
   // An internal display cache used when the internal display is disconnectd.
   scoped_ptr<gfx::Display> internal_display_;
 
   bool force_bounds_changed_;
 
   // The mapping from the display ID to its internal data.
   std::map<int64, DisplayInfo> display_info_;
 
+  DisplayManagerDelegate* delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(DisplayManager);
 };
 
 extern const aura::WindowProperty<int64>* const kDisplayIdKey;
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_