Update MediaKeySession events to match 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 52 matching lines @@
 void ContentDecryptionModuleSession::update(const Uint8Array& key)
 {
     m_session->update(key.data(), key.length());
 }
 
 void ContentDecryptionModuleSession::close()
 {
     m_session->close();
 }
 
-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);
 }
 
+void ContentDecryptionModuleSession::keyReady()
+{
+    m_client->keyReady();

[xhwang, 2014/01/03 23:38:20]

Regarding my previous comment,

m_client->onReady() seems funny, how about m_client->onSessionReady()?

[jrummell, 2014/01/08 18:05:52]

Removed 'key' from name.

+}
+
+void ContentDecryptionModuleSession::keyClosed()
+{
+    m_client->keyClosed();
+}
+
 } // namespace WebCore