WebRtcMediaStreamTrackAdapter, maps 1 webrtc and 1 blink track

content/renderer/BUILD.gn

Index: content/renderer/BUILD.gn
diff --git a/content/renderer/BUILD.gn b/content/renderer/BUILD.gn
index 7586b637d2d7f3545d426b8b0c98eb6811340910..5864d219569e2e4bdd86ceccc8d3be59501d430e 100644
--- a/content/renderer/BUILD.gn
+++ b/content/renderer/BUILD.gn
@@ -625,6 +625,8 @@ target(link_target_type, "renderer") {
       "media/peer_connection_tracker.h",
       "media/remote_media_stream_impl.cc",
       "media/remote_media_stream_impl.h",
+      "media/remote_media_stream_track_adapter.cc",
+      "media/remote_media_stream_track_adapter.h",
       "media/rtc_certificate.cc",
       "media/rtc_certificate.h",
       "media/rtc_certificate_generator.cc",
@@ -674,6 +676,8 @@ target(link_target_type, "renderer") {
       "media/webrtc/webrtc_audio_sink.h",
       "media/webrtc/webrtc_media_stream_adapter.cc",
       "media/webrtc/webrtc_media_stream_adapter.h",
+      "media/webrtc/webrtc_media_stream_track_adapter.cc",
+      "media/webrtc/webrtc_media_stream_track_adapter.h",
       "media/webrtc/webrtc_video_capturer_adapter.cc",
       "media/webrtc/webrtc_video_capturer_adapter.h",
       "media/webrtc/webrtc_video_frame_adapter.cc",