Remove BaseChannel's dependency on TransportController.

webrtc/p2p/base/faketransportcontroller.h

 /*
  *  Copyright 2009 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.
  */
 
@@ skipping 425 matching lines @@
       int16_t local_network_id,
       const rtc::SocketAddress& remote_address,
       int16_t remote_network_id) {
     Candidate local_candidate(0, "udp", local_address, 0u, "", "", "local", 0,
                               "foundation", local_network_id, 0);
     Candidate remote_candidate(0, "udp", remote_address, 0u, "", "", "local", 0,
                                "foundation", remote_network_id, 0);
     return new FakeCandidatePair(local_candidate, remote_candidate);
   }
 
+  void OnDestroyRtcpTransport(const std::string& transport_name) {

[Taylor Brandstetter, 2017/01/12 22:39:02]

Can this slot either be moved to the test where it's used, or remove the "On"
from the name? Usually, methods named like "OnFoo" are private.

[Zhi Huang, 2017/01/13 00:12:47]

I'll go with the simpler one.

+    DestroyTransportChannel_n(transport_name,
+                              cricket::ICE_CANDIDATE_COMPONENT_RTCP);
+  }
+
  protected:
   // The ICE channel is never actually used by TransportController directly,
   // since (currently) the DTLS channel pretends to be both ICE + DTLS. This
   // will change when we get rid of TransportChannelImpl.
   TransportChannelImpl* CreateIceTransportChannel_n(
       const std::string& transport_name,
       int component) override {
     return nullptr;
   }
 
@@ skipping 14 matching lines @@
         bool asymmetric = false;
         local->SetDestination(remote, asymmetric);
       }
     }
   }
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_FAKETRANSPORTCONTROLLER_H_