Move scoped_ole_initializer.h to ui/base/win and clean up ole initialization/uninitialization.

ui/aura/test/aura_test_helper.h

 // 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.
 
 #ifndef UI_AURA_TEST_AURA_TEST_HELPER_H_
 #define UI_AURA_TEST_AURA_TEST_HELPER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 
+#if defined(OS_WIN)
+#include "ui/base/win/scoped_ole_initializer.h"
+#endif
+
 namespace aura {
 class RootWindow;
 namespace test {
 
 // A helper class owned by tests that does common initialization required for
 // Aura use. This class must create no special environment (e.g. no RootWindow)
 // since different users will want their own specific environments and will
 // set that up themselves.
 class AuraTestHelper {
  public:
   AuraTestHelper();
   virtual ~AuraTestHelper();
 
   // Initializes (shows and sizes) the provided RootWindow for use in tests.
   void InitRootWindow(RootWindow* root_window);
 
   void SetUp();
   void TearDown();
 
   // Flushes message loop.
   void RunAllPendingInMessageLoop(RootWindow* root_window);
 
  private:
   MessageLoopForUI message_loop_;
   bool setup_called_;
   bool teardown_called_;
 
+#if defined(OS_WIN)
+  ui::ScopedOleInitializer ole_initializer_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(AuraTestHelper);
 };
 
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_TEST_AURA_TEST_HELPER_H_