Support legacy offerToReceiveAudio/offerToReceiveVideo fields in RTCOfferAnswerOptions.

content/renderer/media/rtc_peer_connection_handler.cc

Index: content/renderer/media/rtc_peer_connection_handler.cc
diff --git a/content/renderer/media/rtc_peer_connection_handler.cc b/content/renderer/media/rtc_peer_connection_handler.cc
index 361948cde063a1c9bba884e2f733fecf44d9d6a8..885ce7528fb63a8385545fe735c303c3d26f6a74 100644
--- a/content/renderer/media/rtc_peer_connection_handler.cc
+++ b/content/renderer/media/rtc_peer_connection_handler.cc
@@ -684,6 +684,8 @@ void ConvertOfferOptionsToWebrtcOfferOptions(
 void ConvertAnswerOptionsToWebrtcAnswerOptions(
     const blink::WebRTCAnswerOptions& options,
     webrtc::PeerConnectionInterface::RTCOfferAnswerOptions* output) {
+  output->offer_to_receive_audio = options.offerToReceiveAudio();
+  output->offer_to_receive_video = options.offerToReceiveVideo();
   output->voice_activity_detection = options.voiceActivityDetection();
 }