Implement InitSegmentReceived algorithm in blink

media/blink/websourcebuffer_impl.cc

Index: media/blink/websourcebuffer_impl.cc
diff --git a/media/blink/websourcebuffer_impl.cc b/media/blink/websourcebuffer_impl.cc
index 78e9290af999994d5171c6fe9b021f536395dfbe..48f987eb21c6d07a8d5e473b7721fcc6364a29cd 100644
--- a/media/blink/websourcebuffer_impl.cc
+++ b/media/blink/websourcebuffer_impl.cc
@@ -185,6 +185,8 @@ void WebSourceBufferImpl::InitSegmentReceived(
     blink::WebSourceBufferClient::MediaTrackInfo trackInfo;
     trackInfo.trackType = mediaTrackTypeToBlink(track->type());
     trackInfo.id = blink::WebString::fromUTF8(track->id());
+    trackInfo.byteStreamTrackID = blink::WebString::fromUTF8(
+        base::UintToString(track->bytestream_track_id()));
     trackInfo.kind = blink::WebString::fromUTF8(track->kind());
     trackInfo.label = blink::WebString::fromUTF8(track->label());
     trackInfo.language = blink::WebString::fromUTF8(track->language());