Update MediaKeySession method names to latest EME spec.

Source/platform/drm/ContentDecryptionModuleSession.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
 
 ContentDecryptionModuleSession::~ContentDecryptionModuleSession()
 {
 }
 
 String ContentDecryptionModuleSession::sessionId() const
 {
     return m_session->sessionId();
 }
 
-void ContentDecryptionModuleSession::generateKeyRequest(const String& mimeType, const Uint8Array& initData)
+void ContentDecryptionModuleSession::initializeNewSession(const String& mimeType, const Uint8Array& initData)
 {
-    m_session->generateKeyRequest(mimeType, initData.data(), initData.length());
+    m_session->initializeNewSession(mimeType, initData.data(), initData.length());
 }
 
 void ContentDecryptionModuleSession::update(const Uint8Array& key)
 {
     m_session->update(key.data(), key.length());
 }
 
-void ContentDecryptionModuleSession::close()
+void ContentDecryptionModuleSession::release()
 {
-    m_session->close();
+    m_session->release();
 }
 
 void ContentDecryptionModuleSession::keyAdded()
 {
     m_client->keyAdded();
 }
 
 void ContentDecryptionModuleSession::keyError(MediaKeyErrorCode errorCode, unsigned long systemCode)
 {
     m_client->keyError(static_cast<ContentDecryptionModuleSessionClient::MediaKeyErrorCode>(errorCode), systemCode);
 }
 
 void ContentDecryptionModuleSession::keyMessage(const unsigned char* message, size_t messageLength, const blink::WebURL& destinationURL)
 {
     m_client->keyMessage(message, messageLength, destinationURL);
 }
 
 } // namespace WebCore