RTCRTPStreamStats.mediaTrackId renamed to trackId.

webrtc/stats/rtcstats_objects.cc

Index: webrtc/stats/rtcstats_objects.cc
diff --git a/webrtc/stats/rtcstats_objects.cc b/webrtc/stats/rtcstats_objects.cc
index af87e717405c12f945de1c0afb4cc014b6c1ae4f..68b33f58c2514229345a6dbcb4364cab150437db 100644
--- a/webrtc/stats/rtcstats_objects.cc
+++ b/webrtc/stats/rtcstats_objects.cc
@@ -455,7 +455,7 @@ WEBRTC_RTCSTATS_IMPL(RTCRTPStreamStats, RTCStats, "rtp",
     &associate_stats_id,
     &is_remote,
     &media_type,
-    &media_track_id,
+    &track_id,
     &transport_id,
     &codec_id,
     &fir_count,
@@ -476,7 +476,7 @@ RTCRTPStreamStats::RTCRTPStreamStats(
       associate_stats_id("associateStatsId"),
       is_remote("isRemote", false),
       media_type("mediaType"),
-      media_track_id("mediaTrackId"),
+      track_id("trackId"),
       transport_id("transportId"),
       codec_id("codecId"),
       fir_count("firCount"),
@@ -493,7 +493,7 @@ RTCRTPStreamStats::RTCRTPStreamStats(
       associate_stats_id(other.associate_stats_id),
       is_remote(other.is_remote),
       media_type(other.media_type),
-      media_track_id(other.media_track_id),
+      track_id(other.track_id),
       transport_id(other.transport_id),
       codec_id(other.codec_id),
       fir_count(other.fir_count),