media: Rename CdmService to CdmRegistry

content/browser/media/cdm_service_impl.cc

-// 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.
-
-#include "content/browser/media/cdm_service_impl.h"
-
-#include <stddef.h>
-
-#include "content/public/common/cdm_info.h"
-#include "content/public/common/content_client.h"
-
-namespace content {
-
-static base::LazyInstance<CdmServiceImpl>::Leaky g_cdm_service =
-    LAZY_INSTANCE_INITIALIZER;
-
-// static
-CdmService* CdmService::GetInstance() {
-  return CdmServiceImpl::GetInstance();
-}
-
-// static
-CdmServiceImpl* CdmServiceImpl::GetInstance() {
-  return g_cdm_service.Pointer();
-}
-
-CdmServiceImpl::CdmServiceImpl() {}
-
-CdmServiceImpl::~CdmServiceImpl() {}
-
-void CdmServiceImpl::Init() {
-  // Let embedders register CDMs.
-  GetContentClient()->AddContentDecryptionModules(&cdms_);
-}
-
-void CdmServiceImpl::RegisterCdm(const CdmInfo& info) {
-  // Always register new CDMs at the beginning of the list, so that
-  // subsequent requests get the latest.
-  cdms_.insert(cdms_.begin(), info);
-}
-
-const std::vector<CdmInfo>& CdmServiceImpl::GetAllRegisteredCdms() {
-  return cdms_;
-}
-
-}  // namespace media