Move root_window.* to window_event_dispatcher.*

ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc

 // Copyright 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 "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 
 #include "ui/aura/client/cursor_client.h"
-#include "ui/aura/root_window.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
 
 typedef ViewsTestBase DesktopNativeWidgetAuraTest;
 
 // Verifies creating a Widget with a parent that is not in a RootWindow doesn't
 // crash.
 TEST_F(DesktopNativeWidgetAuraTest, CreateWithParentNotInRootWindow) {
@@ skipping 159 matching lines @@
     // Owned by |widget|.
     aura::Window* window = new aura::Window(&delegate);
     window->Show();
     widget.GetNativeWindow()->parent()->AddChild(window);
 
     widget.Show();
   }
 }
 
 }  // namespace views