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 e388ffb198930b0750b596e12577882279458b67..1dd412f6cdf58c0ddc2a73a87cc0200867dedb76 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);