Add srcObject attribute of type MediaStream to HTMLMediaElement.

third_party/WebKit/Source/platform/exported/WebMediaPlayerSource.cpp

+// Copyright 2016 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 "public/platform/WebMediaPlayerSource.h"
+
+namespace blink {
+
+WebMediaPlayerSource::WebMediaPlayerSource()
+{
+}
+
+WebMediaPlayerSource::WebMediaPlayerSource(const WebURL& url)
+    : m_url(url)
+{
+}
+
+WebMediaPlayerSource::WebMediaPlayerSource(const WebMediaStream& mediaStream)
+    : m_mediaStream(mediaStream)
+{
+}
+
+WebMediaPlayerSource::~WebMediaPlayerSource()
+{
+    m_mediaStream.reset();
+}
+
+bool WebMediaPlayerSource::isURL() const
+{
+    return !m_url.isEmpty();
+}
+
+WebURL WebMediaPlayerSource::getAsURL() const
+{
+    return m_url;
+}
+
+bool WebMediaPlayerSource::isMediaProviderObject() const
+{
+    return isMediaStream();
+}
+
+bool WebMediaPlayerSource::isMediaStream() const
+{
+    return !m_mediaStream.isNull();
+}
+
+WebMediaStream WebMediaPlayerSource::getAsMediaStream() const
+{
+    return m_mediaStream;
+}
+
+} // namespace blink