Support legacy offerToReceiveAudio/offerToReceiveVideo fields in RTCOfferOptions.

components/test_runner/mock_webrtc_peer_connection_handler.cc

Index: components/test_runner/mock_webrtc_peer_connection_handler.cc
diff --git a/components/test_runner/mock_webrtc_peer_connection_handler.cc b/components/test_runner/mock_webrtc_peer_connection_handler.cc
index c47d2b91b3f47f5e427aec5cdb53b1f0fb6423a1..9c262deafb12a7b359980146ee36874dc68287e0 100644
--- a/components/test_runner/mock_webrtc_peer_connection_handler.cc
+++ b/components/test_runner/mock_webrtc_peer_connection_handler.cc
@@ -100,7 +100,8 @@ void MockWebRTCPeerConnectionHandler::PostRequestFailure(
 void MockWebRTCPeerConnectionHandler::createOffer(
     const WebRTCSessionDescriptionRequest& request,
     const blink::WebRTCOfferOptions& options) {
-  if (options.iceRestart() && options.voiceActivityDetection()) {
+  if (options.iceRestart() && options.voiceActivityDetection() &&
+      options.offerToReceiveAudio() > 0 && options.offerToReceiveVideo() > 0) {
     WebRTCSessionDescription session_description;
     session_description.initialize("offer", "local");
     PostRequestResult(request, session_description);