add mediaType field to ssrc stat

talk/app/webrtc/statscollector_unittest.cc

 /*
  * libjingle
  * Copyright 2014 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 625 matching lines @@
         *reports, StatsReport::kStatsReportTypeSsrc, 1);
     EXPECT_FALSE(report == NULL);
     EXPECT_EQ(stats->GetTimeNow(), report->timestamp());
     std::string track_id = ExtractSsrcStatsValue(
         *reports, StatsReport::kStatsValueNameTrackId);
     EXPECT_EQ(audio_track->id(), track_id);
     std::string ssrc_id = ExtractSsrcStatsValue(
         *reports, StatsReport::kStatsValueNameSsrc);
     EXPECT_EQ(rtc::ToString<uint32_t>(kSsrcOfTrack), ssrc_id);
 
+    std::string media_type = ExtractSsrcStatsValue(*reports,
+        StatsReport::kStatsValueNameMediaType);
+    EXPECT_EQ("audio", media_type);
+
     // Verifies the values in the track report.
     if (voice_sender_info) {
       UpdateVoiceSenderInfoFromAudioTrack(audio_track, voice_sender_info);
       VerifyVoiceSenderInfoReport(report, *voice_sender_info);
     }
     if (voice_receiver_info) {
       VerifyVoiceReceiverInfoReport(report, *voice_receiver_info);
     }
 
     // Verify we get the same result by passing a track to GetStats().
@@ skipping 369 matching lines @@
   EXPECT_TRUE(track_report);
   EXPECT_EQ(stats.GetTimeNow(), track_report->timestamp());
 
   std::string ssrc_id = ExtractSsrcStatsValue(
       reports, StatsReport::kStatsValueNameSsrc);
   EXPECT_EQ(rtc::ToString<uint32_t>(kSsrcOfTrack), ssrc_id);
 
   std::string track_id = ExtractSsrcStatsValue(
       reports, StatsReport::kStatsValueNameTrackId);
   EXPECT_EQ(kLocalTrackId, track_id);
+
+  std::string media_type = ExtractSsrcStatsValue(reports,
+      StatsReport::kStatsValueNameMediaType);
+  EXPECT_EQ("video", media_type);
 }
 
 // This test verifies that an SSRC object has the identifier of a Transport
 // stats object, and that this transport stats object exists in stats.
 TEST_F(StatsCollectorTest, TransportObjectLinkedFromSsrcObject) {
   StatsCollectorForTest stats(&pc_);
 
   EXPECT_CALL(session_, GetLocalCertificate(_, _))
       .WillRepeatedly(Return(false));
   EXPECT_CALL(session_, GetRemoteSSLCertificate(_, _))
@@ skipping 694 matching lines @@
   cricket::VoiceSenderInfo new_voice_sender_info;
   InitVoiceSenderInfo(&new_voice_sender_info);
   cricket::VoiceMediaInfo new_stats_read;
   reports.clear();
   SetupAndVerifyAudioTrackStats(
       new_audio_track.get(), stream_.get(), &stats, &voice_channel, kVcName,
       media_channel, &new_voice_sender_info, NULL, &new_stats_read, &reports);
 }
 
 }  // namespace webrtc