Encrypted Media: Implement IPC based SetCdm().

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"
@@ skipping 12 matching lines @@
 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,
 #if defined(ENABLE_PEPPER_CDMS)
       const CreatePepperCdmCB& create_pepper_cdm_cb,
 #elif defined(OS_ANDROID)
       RendererMediaPlayerManager* manager,
-      int cdm_id,
       const GURL& frame_url,
+      int* cdm_id,  // Output parameter indicating the CDM ID of the MediaKeys.
 #endif  // defined(ENABLE_PEPPER_CDMS)
       const media::SessionCreatedCB& session_created_cb,
       const media::SessionMessageCB& session_message_cb,
       const media::SessionReadyCB& session_ready_cb,
       const media::SessionClosedCB& session_closed_cb,
       const media::SessionErrorCB& session_error_cb);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_CONTENT_DECRYPTION_MODULE_FACTORY_H_