Make PacketTransportInternal inherit from PacketTransportInterface.

webrtc/p2p/base/fakepackettransport.h

 /*
  *  Copyright 2017 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_P2P_BASE_FAKEPACKETTRANSPORT_H_
 #define WEBRTC_P2P_BASE_FAKEPACKETTRANSPORT_H_
 
 #include <string>
 
 #include "webrtc/api/ortc/packettransportinterface.h"
 #include "webrtc/base/asyncinvoker.h"
 #include "webrtc/base/copyonwritebuffer.h"
 #include "webrtc/p2p/base/packettransportinternal.h"
 
 namespace rtc {
 
 // Used to simulate a packet-based transport.
-class FakePacketTransport : public PacketTransportInternal,
-                            public webrtc::PacketTransportInterface {
+class FakePacketTransport : public PacketTransportInternal {
  public:
   explicit FakePacketTransport(const std::string& debug_name)
       : debug_name_(debug_name) {}
   ~FakePacketTransport() override {
     if (dest_ && dest_->dest_ == this) {
       dest_->dest_ = nullptr;
     }
   }
 
   // If async, will send packets by "Post"-ing to message queue instead of
@@ skipping 44 matching lines @@
       SendPacketInternal(packet);
     }
     SentPacket sent_packet(options.packet_id, TimeMillis());
     SignalSentPacket(this, sent_packet);
     return static_cast<int>(len);
   }
   int SetOption(Socket::Option opt, int value) override { return true; }
   bool GetOption(Socket::Option opt, int* value) override { return true; }
   int GetError() override { return 0; }
 
- protected:
-  PacketTransportInternal* GetInternal() override { return this; }
-
  private:
   void set_writable(bool writable) {
     if (writable_ == writable) {
       return;
     }
     writable_ = writable;
     if (writable_) {
       SignalReadyToSend(this);
     }
     SignalWritableState(this);
@@ skipping 19 matching lines @@
   FakePacketTransport* dest_ = nullptr;
   bool async_ = false;
   int async_delay_ms_ = 0;
   bool writable_ = false;
   bool receiving_ = false;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_P2P_BASE_FAKEPACKETTRANSPORT_H_