Move root_window_host* in aura to window_tree_host*.

ui/views/widget/desktop_aura/desktop_root_window_host_ozone.cc

Index: ui/views/widget/desktop_aura/desktop_root_window_host_ozone.cc
diff --git a/ui/views/widget/desktop_aura/desktop_root_window_host_ozone.cc b/ui/views/widget/desktop_aura/desktop_root_window_host_ozone.cc
deleted file mode 100644
index e327cb1a8d3cab6c28d527e1faab3b320796526d..0000000000000000000000000000000000000000
--- a/ui/views/widget/desktop_aura/desktop_root_window_host_ozone.cc
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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/aura/window_tree_host.h"
-#include "ui/views/widget/desktop_aura/desktop_root_window_host.h"
-#include "ui/views/widget/desktop_aura/desktop_factory_ozone.h"
-
-namespace views {
-
-DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
-    internal::NativeWidgetDelegate* native_widget_delegate,
-    DesktopNativeWidgetAura* desktop_native_widget_aura) {
-  DesktopFactoryOzone* d_factory = DesktopFactoryOzone::GetInstance();
-
-  return d_factory->CreateWindowTreeHost(native_widget_delegate,
-                                         desktop_native_widget_aura);
-}
-
-}  // namespace views