media: Rename CdmService to CdmRegistry

content/public/browser/cdm_service.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_PUBLIC_BROWSER_CDM_SERVICE_H_
-#define CONTENT_PUBLIC_BROWSER_CDM_SERVICE_H_
-
-#include <vector>
-
-#include "content/common/content_export.h"
-
-namespace content {
-
-struct CdmInfo;
-
-// Keeps track of the Content Decryption Modules that are available.
-class CONTENT_EXPORT CdmService {
- public:
-  // Returns the CdmService singleton.
-  static CdmService* GetInstance();
-
-  virtual ~CdmService() {}
-
-  // Must be called on the instance to finish initialization.
-  virtual void Init() = 0;
-
-  // Registers a CDM with the specified CDM information. The CDM will be
-  // inserted at the head of the list so that it can override any older
-  // registrations.
-  // Note: Since only 1 version of the CDM can be loaded at any given time,
-  // it is possible that there will be a mismatch between the functionality
-  // reported and what is actually available, if the reported functionality
-  // changes between versions. (http://crbug.com/599588)
-  virtual void RegisterCdm(const CdmInfo& info) = 0;
-
-  // Returns the list of all registered CDMs and the associated data.
-  virtual const std::vector<CdmInfo>& GetAllRegisteredCdms() = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_CDM_SERVICE_H_