Hookup the MediaStream glue for Adding and Removing tracks to an existing MediaStream.

content/renderer/media/media_stream_center.cc

 // Copyright (c) 2012 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_center.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 14 matching lines @@
 
 namespace content {
 
 static webrtc::MediaStreamInterface* GetNativeMediaStream(
     const WebKit::WebMediaStream& stream) {
   MediaStreamExtraData* extra_data =
       static_cast<MediaStreamExtraData*>(stream.extraData());
   return extra_data->stream();
 }
 
-
 static webrtc::MediaStreamTrackInterface* GetNativeMediaStreamTrack(
       const WebKit::WebMediaStream& stream,
       const WebKit::WebMediaStreamTrack& component) {
   std::string track_id = UTF16ToUTF8(component.id());
   webrtc::MediaStreamInterface* native_stream = GetNativeMediaStream(stream);
   if (native_stream) {
     if (component.source().type() == WebKit::WebMediaStreamSource::TypeAudio) {
       return native_stream->FindAudioTrack(track_id);
     }
     if (component.source().type() == WebKit::WebMediaStreamSource::TypeVideo) {
@@ skipping 46 matching lines @@
   extra_data->OnLocalStreamStop();
 }
 
 void MediaStreamCenter::didCreateMediaStream(
     WebKit::WebMediaStream& stream) {
   if (!rtc_factory_)
     return;
   rtc_factory_->CreateNativeLocalMediaStream(&stream);
 }
 
+bool MediaStreamCenter::didAddMediaStreamTrack(
+    const WebKit::WebMediaStream& stream,
+    const WebKit::WebMediaStreamTrack& track) {
+  if (!rtc_factory_)
+    return false;
+
+  return rtc_factory_->AddNativeMediaStreamTrack(stream, track);
+}
+
+bool MediaStreamCenter::didRemoveMediaStreamTrack(
+    const WebKit::WebMediaStream& stream,
+    const WebKit::WebMediaStreamTrack& track) {
+  if (!rtc_factory_)
+    return false;
+
+  return rtc_factory_->RemoveNativeMediaStreamTrack(stream, track);
+}
+
 }  // namespace content