Integrate FlexfecReceiveStream with Call.

webrtc/media/engine/fakewebrtccall.cc

Index: webrtc/media/engine/fakewebrtccall.cc
diff --git a/webrtc/media/engine/fakewebrtccall.cc b/webrtc/media/engine/fakewebrtccall.cc
index d021ecab3ddc2c4cdc0ea72679e266bc5ad7968b..a25fe541ab894c23b37d299a6808f3957c35ce5f 100644
--- a/webrtc/media/engine/fakewebrtccall.cc
+++ b/webrtc/media/engine/fakewebrtccall.cc
@@ -433,6 +433,17 @@ void FakeCall::DestroyVideoReceiveStream(
   }
 }
 
+webrtc::FlexfecReceiveStream* FakeCall::CreateFlexfecReceiveStream(
+    webrtc::FlexfecReceiveStream::Config config) {
+  // TODO(brandtr): Implement when adding integration with WebRtcVideoEngine2.
+  return nullptr;
+}
+
+void FakeCall::DestroyFlexfecReceiveStream(
+    webrtc::FlexfecReceiveStream* receive_stream) {
+  // TODO(brandtr): Implement when adding integration with WebRtcVideoEngine2.
+}
+
 webrtc::PacketReceiver* FakeCall::Receiver() {
   return this;
 }