1 files changed, 47 insertions, 0 deletions
diff --git a/chromium/content/renderer/media/media_stream_track.cc b/chromium/content/renderer/media/media_stream_track.cc
new file mode 100644
index 00000000000..529bc384e89
--- /dev/null
+++ b/chromium/content/renderer/media/media_stream_track.cc
@@ -0,0 +1,47 @@
+// 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/media_stream_track.h"
+
+#include "base/logging.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
+#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
+
+namespace content {
+
+MediaStreamTrack* MediaStreamTrack::GetTrack(
+    const blink::WebMediaStreamTrack& track) {
+  if (track.isNull())
+    return NULL;
+  return static_cast<MediaStreamTrack*>(track.extraData());
+}
+
+MediaStreamTrack::MediaStreamTrack(
+    webrtc::MediaStreamTrackInterface* track, bool is_local_track)
+    : track_(track),
+      is_local_track_(is_local_track) {
+}
+
+MediaStreamTrack::~MediaStreamTrack() {
+}
+
+void MediaStreamTrack::SetEnabled(bool enabled) {
+  if (track_)
+    track_->set_enabled(enabled);
+}
+
+void MediaStreamTrack::Stop() {
+  // Stop means that a track should be stopped permanently. But
+  // since there is no proper way of doing that on a remote track, we can
+  // at least disable the track. Blink will not call down to the content layer
+  // after a track has been stopped.
+  if (track_)
+    track_->set_enabled(false);
+}
+
+webrtc::AudioTrackInterface* MediaStreamTrack::GetAudioAdapter() {
+  return static_cast<webrtc::AudioTrackInterface*>(track_.get());
+}
+
+}  // namespace content