Remove LazyInstance usage from media/

content/browser/media/cdm_registry_impl.h

 // Copyright 2016 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 CONTENT_BROWSER_MEDIA_CDM_REGISTRY_IMPL_H_
 #define CONTENT_BROWSER_MEDIA_CDM_REGISTRY_IMPL_H_
 
 #include <vector>
 
-#include "base/lazy_instance.h"
+#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/cdm_registry.h"
 
 namespace content {
 
 struct CdmInfo;
 
 class CONTENT_EXPORT CdmRegistryImpl : NON_EXPORTED_BASE(public CdmRegistry) {
  public:
   // Returns the CdmRegistryImpl singleton.
   static CdmRegistryImpl* GetInstance();
 
   // CdmRegistry implementation.
   void Init() override;
   void RegisterCdm(const CdmInfo& info) override;
   const std::vector<CdmInfo>& GetAllRegisteredCdms() override;
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<CdmRegistryImpl>;
   friend class CdmRegistryImplTest;
 
   CdmRegistryImpl();
   ~CdmRegistryImpl() override;
 
   std::vector<CdmInfo> cdms_;
 
   DISALLOW_COPY_AND_ASSIGN(CdmRegistryImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CDM_REGISTRY_IMPL_H_