RTCPeerConnection.ontrack event added.

chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc

Index: chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc
diff --git a/chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc b/chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc
index f93585016a40b8ba36829471cb6505aee3e20639..ad1c6bd792d85b50f40f0f2eaea6e00524eaa335 100644
--- a/chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc
+++ b/chrome/browser/media/webrtc/webrtc_rtp_browsertest.cc
@@ -72,6 +72,7 @@ IN_PROC_BROWSER_TEST_F(WebRtcRtpBrowserTest, AddAndRemoveTracksWithoutStream) {
 
   SetupPeerconnectionWithoutLocalStream(left_tab_);
   SetupPeerconnectionWithoutLocalStream(right_tab_);
+  SetupOnTrackListener(right_tab_);
 
   // TODO(hbos): Here and in other "AddAndRemoveTracks" tests: when ontrack and
   // ended events are supported, verify that these are fired on the remote side
@@ -109,6 +110,15 @@ IN_PROC_BROWSER_TEST_F(WebRtcRtpBrowserTest, AddAndRemoveTracksWithoutStream) {
   EXPECT_TRUE(HasReceiverWithTrack(right_tab_, audio_track_id));
   EXPECT_TRUE(HasReceiverWithTrack(right_tab_, video_track_id));
   VerifyRtpReceivers(right_tab_, 2);
+  std::vector<TrackEvent> track_events = GetTrackEvents(right_tab_);
+  for (TrackEvent& track_event : track_events) {
+    printf("HBOS: track_id: %s", track_event.track_id.c_str());
+    if (!track_event.stream_ids.empty()) {
+      for (std::string& stream_id : track_event.stream_ids)
+        printf(" %s", stream_id.c_str());
+    }
+    printf("\n");
+  }
 
   // Remove first track.
   RemoveTrack(left_tab_, audio_track_id);
@@ -148,6 +158,7 @@ IN_PROC_BROWSER_TEST_F(WebRtcRtpBrowserTest,
 
   SetupPeerconnectionWithoutLocalStream(left_tab_);
   SetupPeerconnectionWithoutLocalStream(right_tab_);
+  SetupOnTrackListener(right_tab_);
 
   // Add two tracks.
   EXPECT_EQ(0u, GetNegotiationNeededCount(left_tab_));
@@ -224,6 +235,7 @@ IN_PROC_BROWSER_TEST_F(WebRtcRtpBrowserTest,
 
   SetupPeerconnectionWithoutLocalStream(left_tab_);
   SetupPeerconnectionWithoutLocalStream(right_tab_);
+  SetupOnTrackListener(right_tab_);
 
   // Add two tracks.
   EXPECT_EQ(0u, GetNegotiationNeededCount(left_tab_));