media: Remove BrowserCdmFactory inferface.

media/cdm/android_cdm_factory.h

-// 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.
-
-#ifndef MEDIA_CDM_ANDROID_CDM_FACTORY_H_
-#define MEDIA_CDM_ANDROID_CDM_FACTORY_H_
-
-#include "base/macros.h"
-#include "media/base/cdm_factory.h"
-
-namespace media {
-
-struct CdmConfig;
-
-class AndroidCdmFactory : public CdmFactory {
- public:
-  AndroidCdmFactory();
-  ~AndroidCdmFactory() final;
-
-  // CdmFactory implementation.
-  void Create(const std::string& key_system,
-              const GURL& security_origin,
-              const CdmConfig& cdm_config,
-              const SessionMessageCB& session_message_cb,
-              const SessionClosedCB& session_closed_cb,
-              const LegacySessionErrorCB& legacy_session_error_cb,
-              const SessionKeysChangeCB& session_keys_change_cb,
-              const SessionExpirationUpdateCB& session_expiration_update_cb,
-              const CdmCreatedCB& cdm_created_cb) final;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AndroidCdmFactory);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_CDM_ANDROID_CDM_FACTORY_H_