Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/cdm_session_adapter.cc

 // Copyright 2014 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/renderer/media/cdm_session_adapter.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
 #include "content/renderer/media/crypto/content_decryption_module_factory.h"
@@ skipping 74 matching lines @@
 
 void CdmSessionAdapter::ReleaseSession(uint32 session_id) {
   DCHECK(sessions_.find(session_id) != sessions_.end());
   media_keys_->ReleaseSession(session_id);
 }
 
 media::Decryptor* CdmSessionAdapter::GetDecryptor() {
   return media_keys_->GetDecryptor();
 }
 
+int CdmSessionAdapter::GetCdmId() {
+  return media_keys_->GetCdmId();
+}
+
 void CdmSessionAdapter::OnSessionCreated(uint32 session_id,
                                          const std::string& web_session_id) {
   WebContentDecryptionModuleSessionImpl* session = GetSession(session_id);
   DLOG_IF(WARNING, !session) << __FUNCTION__ << " for unknown session "
                              << session_id;
   if (session)
     session->OnSessionCreated(web_session_id);
 }
 
 void CdmSessionAdapter::OnSessionMessage(uint32 session_id,
@@ skipping 35 matching lines @@
 WebContentDecryptionModuleSessionImpl* CdmSessionAdapter::GetSession(
     uint32 session_id) {
   // Since session objects may get garbage collected, it is possible that there
   // are events coming back from the CDM and the session has been unregistered.
   // We can not tell if the CDM is firing events at sessions that never existed.
   SessionMap::iterator session = sessions_.find(session_id);
   return (session != sessions_.end()) ? session->second : NULL;
 }
 
 }  // namespace content