Use trackInfo.id instead of bytestream id for blink tracks

third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp

Index: third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
diff --git a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
index d746f989912406909eac23fa1449ff42e65fc2d3..16d0963c41680e90eb92d353a6af68dd5632edab 100644
--- a/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
+++ b/third_party/WebKit/Source/modules/mediasource/SourceBuffer.cpp
@@ -746,7 +746,7 @@ bool SourceBuffer::initializationSegmentReceived(const WebVector<MediaTrackInfo>
             const auto& kind = trackInfo.kind;
             // 5.2.7 TODO(servolk): Implement track kind processing.
             // 5.2.8.2 Let new audio track be a new AudioTrack object.
-            AudioTrack* audioTrack = AudioTrack::create(byteStreamTrackID, kind, label, language, false);
+            AudioTrack* audioTrack = AudioTrack::create(trackInfo.id, kind, label, language, false);
             SourceBufferTrackBaseSupplement::setSourceBuffer(*audioTrack, this);
             // 5.2.8.7 If audioTracks.length equals 0, then run the following steps:
             if (audioTracks().length() == 0) {
@@ -783,7 +783,7 @@ bool SourceBuffer::initializationSegmentReceived(const WebVector<MediaTrackInfo>
             const auto& kind = trackInfo.kind;
             // 5.3.7 TODO(servolk): Implement track kind processing.
             // 5.3.8.2 Let new video track be a new VideoTrack object.
-            VideoTrack* videoTrack = VideoTrack::create(byteStreamTrackID, kind, label, language, false);
+            VideoTrack* videoTrack = VideoTrack::create(trackInfo.id, kind, label, language, false);
             SourceBufferTrackBaseSupplement::setSourceBuffer(*videoTrack, this);
             // 5.3.8.7 If videoTracks.length equals 0, then run the following steps:
             if (videoTracks().length() == 0) {