Move root_window.* to window_event_dispatcher.*

ash/debug.cc

 // Copyright (c) 2013 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/debug.h"
 
 #include "ash/shell.h"
 #include "cc/debug/layer_tree_debug_state.h"
-#include "ui/aura/root_window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/compositor/compositor.h"
 
 namespace ash {
 namespace debug {
 
 void ToggleShowDebugBorders() {
   aura::Window::Windows root_windows =
       Shell::GetInstance()->GetAllRootWindows();
   scoped_ptr<bool> value;
   for (aura::Window::Windows::iterator it = root_windows.begin();
@@ skipping 32 matching lines @@
     cc::LayerTreeDebugState state = compositor->GetLayerTreeDebugState();
     if (!value.get())
       value.reset(new bool(!state.show_paint_rects));
     state.show_paint_rects = *value.get();
     compositor->SetLayerTreeDebugState(state);
   }
 }
 
 }  // debug
 }  // ash