Revert of Extract re-usable InitializeMediaFoundation()

media/base/win/mf_initializer.cc

-// Copyright 2015 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 "media/base/win/mf_initializer.h"
-
-#include <mfapi.h>
-
-#include "base/lazy_instance.h"
-#include "base/macros.h"
-
-namespace media {
-
-namespace {
-
-// LazyInstance to initialize the Media Foundation Library.
-class MFInitializer {
- public:
-  MFInitializer()
-      : mf_started_(MFStartup(MF_VERSION, MFSTARTUP_LITE) == S_OK) {}
-
-  ~MFInitializer() {
-    if (mf_started_)
-      MFShutdown();
-  }
-
- private:
-  const bool mf_started_;
-
-  DISALLOW_COPY_AND_ASSIGN(MFInitializer);
-};
-
-base::LazyInstance<MFInitializer> g_mf_initializer = LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-void InitializeMediaFoundation() {
-  g_mf_initializer.Get();
-}
-
-}  // namespace media