Revert: Change VideoTrack implementation to invoke VideoTrackSourceInterface::AddOrUpdateSink on wt

webrtc/pc/statscollector_unittest.cc

Index: webrtc/pc/statscollector_unittest.cc
diff --git a/webrtc/pc/statscollector_unittest.cc b/webrtc/pc/statscollector_unittest.cc
index 0e408c62733cd91084a90b5493bfbf6a3e1b5784..e9a2c5c9d56deddf7dc48b563ce391b0b688a6a8 100644
--- a/webrtc/pc/statscollector_unittest.cc
+++ b/webrtc/pc/statscollector_unittest.cc
@@ -545,8 +545,7 @@
   void AddOutgoingVideoTrackStats() {
     stream_ = webrtc::MediaStream::Create("streamlabel");
     track_ = webrtc::VideoTrack::Create(kLocalTrackId,
-                                        webrtc::FakeVideoTrackSource::Create(),
-                                        rtc::Thread::Current());
+                                        webrtc::FakeVideoTrackSource::Create());
     stream_->AddTrack(track_);
     EXPECT_CALL(session_, GetLocalTrackIdBySsrc(kSsrcOfTrack, _))
         .WillRepeatedly(DoAll(SetArgPointee<1>(kLocalTrackId), Return(true)));
@@ -556,8 +555,7 @@
   void AddIncomingVideoTrackStats() {
     stream_ = webrtc::MediaStream::Create("streamlabel");
     track_ = webrtc::VideoTrack::Create(kRemoteTrackId,
-                                        webrtc::FakeVideoTrackSource::Create(),
-                                        rtc::Thread::Current());
+                                        webrtc::FakeVideoTrackSource::Create());
     stream_->AddTrack(track_);
     EXPECT_CALL(session_, GetRemoteTrackIdBySsrc(kSsrcOfTrack, _))
         .WillRepeatedly(DoAll(SetArgPointee<1>(kRemoteTrackId), Return(true)));