Unify Transport and newapi::Transport interfaces.

webrtc/test/null_transport.h

Index: webrtc/test/null_transport.h
diff --git a/webrtc/test/null_transport.h b/webrtc/test/null_transport.h
index b80f751b1e52feb6f73a8fcabf4d340816d18dec..a60d8cb91e22ce636af991b2c5ee91389d70e367 100644
--- a/webrtc/test/null_transport.h
+++ b/webrtc/test/null_transport.h
@@ -17,7 +17,7 @@ namespace webrtc {
 class PacketReceiver;
 
 namespace test {
-class NullTransport : public newapi::Transport {
+class NullTransport : public Transport {
  public:
   bool SendRtp(const uint8_t* packet, size_t length) override;
   bool SendRtcp(const uint8_t* packet, size_t length) override;