Remove using the Shell desktop Window when we don't have an acceleated widget.

ash/test/test_metro_viewer_process_host.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/test/test_metro_viewer_process_host.h"
 
 #include <windef.h>
 
 #include "base/logging.h"
 #include "ui/aura/remote_root_window_host_win.h"
@@ skipping 12 matching lines @@
 
 void TestMetroViewerProcessHost::OnChannelError() {
   closed_unexpectedly_ = true;
   aura::RemoteRootWindowHostWin::Instance()->Disconnected();
 }
 
 void TestMetroViewerProcessHost::OnSetTargetSurface(
     gfx::NativeViewId target_surface) {
   DLOG(INFO) << __FUNCTION__ << ", target_surface = " << target_surface;
   HWND hwnd = reinterpret_cast<HWND>(target_surface);
+  aura::RemoteRootWindowHostWin::Instance()->Connected(this, hwnd);
 
   backing_surface_.reset(new AcceleratedSurface(hwnd));

[cpu_(ooo_6.6-7.5), 2013/08/25 23:35:17]

note that here I switched the order (see lines 34 and 39), I don't think it
matters though.

-
-  scoped_refptr<AcceleratedPresenter> any_window =
-      AcceleratedPresenter::GetForWindow(NULL);
-  any_window->SetNewTargetWindow(hwnd);
-  aura::RemoteRootWindowHostWin::Instance()->Connected(this);
 }
 
 void TestMetroViewerProcessHost::OnOpenURL(const string16& url) {
 }
 
 void TestMetroViewerProcessHost::OnHandleSearchRequest(
     const string16& search_string) {
 }
 
 }  // namespace test
 }  // namespace ash