Move root_window.* to window_event_dispatcher.*

ash/wm/system_modal_container_layout_manager_unittest.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/system_modal_container_layout_manager.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_util.h"
 #include "base/compiler_specific.h"
 #include "base/run_loop.h"
-#include "ui/aura/root_window.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/corewm/window_util.h"
 #include "ui/views/test/capture_tracking_view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 
 namespace ash {
 namespace test {
 
@@ skipping 459 matching lines @@
 
   // No more modal screen.
   modal1->Hide();
   TestWindow::CloseTestWindow(modal1.release());
   EXPECT_FALSE(AllRootWindowsHaveModalBackgrounds());
   EXPECT_TRUE(wm::IsActiveWindow(normal.get()));
 }
 
 }  // namespace test
 }  // namespace ash