Add new needkey event for EME.

Source/web/WebMediaPlayerClientImpl.cpp

 // Copyright (c) 2009 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 "config.h"
 #include "WebMediaPlayerClientImpl.h"
 
 #include "WebDocument.h"
 #include "WebFrameClient.h"
 #include "WebFrameImpl.h"
@@ skipping 124 matching lines @@
     m_client->mediaPlayerKeyError(keySystem, sessionId, static_cast<MediaPlayerClient::MediaKeyErrorCode>(errorCode), systemCode);
 }
 
 void WebMediaPlayerClientImpl::keyMessage(const WebString& keySystem, const WebString& sessionId, const unsigned char* message, unsigned messageLength, const WebURL& defaultURL)
 {
     m_client->mediaPlayerKeyMessage(keySystem, sessionId, message, messageLength, defaultURL);
 }
 
 void WebMediaPlayerClientImpl::keyNeeded(const WebString& keySystem, const WebString& sessionId, const unsigned char* initData, unsigned initDataLength)
 {
-    m_client->mediaPlayerKeyNeeded(keySystem, sessionId, initData, initDataLength);
+    // FIXME: remove after callers change to pass contentType.
+    m_client->mediaPlayerKeyNeeded(WebString(), initData, initDataLength);
+}
+
+void WebMediaPlayerClientImpl::keyNeeded(const WebString& contentType, const unsigned char* initData, unsigned initDataLength)
+{
+    m_client->mediaPlayerKeyNeeded(contentType, initData, initDataLength);
 }
 
 WebPlugin* WebMediaPlayerClientImpl::createHelperPlugin(const WebString& pluginType, WebFrame* frame)
 {
     ASSERT(!m_helperPlugin);
 
     m_helperPlugin = toWebViewImpl(frame->view())->createHelperPlugin(pluginType, frame->document());
     if (!m_helperPlugin)
         return 0;
 
@@ skipping 514 matching lines @@
 
 void WebMediaPlayerClientImpl::AudioClientImpl::setFormat(size_t numberOfChannels, float sampleRate)
 {
     if (m_client)
         m_client->setFormat(numberOfChannels, sampleRate);
 }
 
 #endif
 
 } // namespace blink