Introduce CdmFactory interface.

content/renderer/media/crypto/content_decryption_module_factory.h

-// Copyright 2013 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_RENDERER_MEDIA_CRYPTO_CONTENT_DECRYPTION_MODULE_FACTORY_H_
-#define CONTENT_RENDERER_MEDIA_CRYPTO_CONTENT_DECRYPTION_MODULE_FACTORY_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "media/base/media_keys.h"
-
-#if defined(ENABLE_PEPPER_CDMS)
-#include "content/renderer/media/crypto/pepper_cdm_wrapper.h"
-#endif
-
-class GURL;
-
-namespace content {
-
-#if defined(ENABLE_BROWSER_CDMS)
-class RendererCdmManager;
-#endif
-
-class ContentDecryptionModuleFactory {
- public:
-  // |create_pepper_cdm_cb| will be called synchronously if necessary. The other
-  // callbacks can be called asynchronously.
-  static scoped_ptr<media::MediaKeys> Create(
-      const std::string& key_system,
-      const GURL& security_origin,
-#if defined(ENABLE_PEPPER_CDMS)
-      const CreatePepperCdmCB& create_pepper_cdm_cb,
-#elif defined(ENABLE_BROWSER_CDMS)
-      RendererCdmManager* manager,
-      int* cdm_id,  // Output parameter indicating the CDM ID of the MediaKeys.
-#endif  // defined(ENABLE_PEPPER_CDMS)
-      const media::SessionMessageCB& session_message_cb,
-      const media::SessionReadyCB& session_ready_cb,
-      const media::SessionClosedCB& session_closed_cb,
-      const media::SessionErrorCB& session_error_cb,
-      const media::SessionKeysChangeCB& session_keys_change_cb,
-      const media::SessionExpirationUpdateCB& session_expiration_update_cb);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_MEDIA_CRYPTO_CONTENT_DECRYPTION_MODULE_FACTORY_H_