Align new VoE API with design.

webrtc/audio_receive_stream.h

Index: webrtc/audio_receive_stream.h
diff --git a/webrtc/audio_receive_stream.h b/webrtc/audio_receive_stream.h
index 9a8601de9bd023749bba80d238dc5731c9613592..29735683b3b769e0c18a6db775743fb3a007a350 100644
--- a/webrtc/audio_receive_stream.h
+++ b/webrtc/audio_receive_stream.h
@@ -17,6 +17,7 @@
 
 #include "webrtc/config.h"
 #include "webrtc/stream.h"
+#include "webrtc/transport.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -44,6 +45,9 @@ class AudioReceiveStream : public ReceiveStream {
       std::vector<RtpExtension> extensions;
     } rtp;
 
+    Transport* receive_transport = nullptr;
+    Transport* rtcp_send_transport = nullptr;
+
     // Underlying VoiceEngine handle, used to map AudioReceiveStream to
     // lower-level components. Temporarily used while VoiceEngine channels are
     // created outside of Call.