Refactoring that removes P2PTransport and DtlsTransport classes.

webrtc/p2p/base/p2ptransportchannel.cc

Index: webrtc/p2p/base/p2ptransportchannel.cc
diff --git a/webrtc/p2p/base/p2ptransportchannel.cc b/webrtc/p2p/base/p2ptransportchannel.cc
index e1a955c69611f21321ea5fa35772666e7fa45aae..5f858c4858f952174b878891a875648bbd69de43 100644
--- a/webrtc/p2p/base/p2ptransportchannel.cc
+++ b/webrtc/p2p/base/p2ptransportchannel.cc
@@ -99,12 +99,6 @@ static constexpr int b_is_better = -1;
 
 P2PTransportChannel::P2PTransportChannel(const std::string& transport_name,
                                          int component,
-                                         P2PTransport* transport,
-                                         PortAllocator* allocator)
-    : P2PTransportChannel(transport_name, component, allocator) {}
-
-P2PTransportChannel::P2PTransportChannel(const std::string& transport_name,
-                                         int component,
                                          PortAllocator* allocator)
     : TransportChannelImpl(transport_name, component),
       allocator_(allocator),