ScreenCapture for Android phase1, part II

content/renderer/media/peer_connection_tracker.cc

Index: content/renderer/media/peer_connection_tracker.cc
diff --git a/content/renderer/media/peer_connection_tracker.cc b/content/renderer/media/peer_connection_tracker.cc
index c76674bde73cbdab54e5e00e6e53aa7016e5ab21..bf3aea1e29aa8159c44385187ca4383c8dc28363 100644
--- a/content/renderer/media/peer_connection_tracker.cc
+++ b/content/renderer/media/peer_connection_tracker.cc
@@ -707,9 +707,20 @@ void PeerConnectionTracker::TrackGetUserMedia(
     const blink::WebUserMediaRequest& user_media_request) {
   DCHECK(main_thread_.CalledOnValidThread());
 
+  std::string video_stream_source;
+  if (!user_media_request.videoConstraints().isNull()) {
+    const blink::WebMediaTrackConstraintSet& video_basic =
+        user_media_request.videoConstraints().basic();
+    if (!video_basic.mediaStreamSource.exact().isEmpty())
+      video_stream_source = video_basic.mediaStreamSource.exact()[0].utf8();
+  }
+
+  VideoInfo video_info;
+  video_info.video = user_media_request.video();
+  video_info.video_stream_source = video_stream_source;
   SendTarget()->Send(new PeerConnectionTrackerHost_GetUserMedia(
       user_media_request.getSecurityOrigin().toString().utf8(),
-      user_media_request.audio(), user_media_request.video(),
+      user_media_request.audio(), video_info,
       SerializeMediaConstraints(user_media_request.audioConstraints()),
       SerializeMediaConstraints(user_media_request.videoConstraints())));
 }