Move root_window.* to window_event_dispatcher.*

ash/wm/video_detector.cc

 // 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.
 
 #include "ash/wm/video_detector.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/window_state.h"
 #include "ui/aura/env.h"
-#include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/rect.h"
 #include "ui/views/corewm/window_util.h"
 
 namespace ash {
 
 const int VideoDetector::kMinUpdateWidth = 333;
 const int VideoDetector::kMinUpdateHeight = 250;
 const int VideoDetector::kMinFramesPerSecond = 15;
 const double VideoDetector::kNotifyIntervalSec = 1.0;
 
@@ skipping 122 matching lines @@
     }
   }
 
   FOR_EACH_OBSERVER(VideoDetectorObserver,
                     observers_,
                     OnVideoDetected(fullscreen_window_exists));
   last_observer_notification_time_ = now;
 }
 
 }  // namespace ash