Revert of make the DtlsTransportWrapper inherit form DtlsTransportInternal

webrtc/p2p/BUILD.gn

 # Copyright (c) 2016 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.
 
 import("../build/webrtc.gni")
 
@@ skipping 43 matching lines @@
     "base/sessiondescription.h",
     "base/stun.cc",
     "base/stun.h",
     "base/stunport.cc",
     "base/stunport.h",
     "base/stunrequest.cc",
     "base/stunrequest.h",
     "base/tcpport.cc",
     "base/tcpport.h",
     "base/transport.h",
+    "base/transportchannel.cc",
+    "base/transportchannel.h",
+    "base/transportchannelimpl.h",
     "base/transportcontroller.cc",
     "base/transportcontroller.h",
     "base/transportdescription.cc",
     "base/transportdescription.h",
     "base/transportdescriptionfactory.cc",
     "base/transportdescriptionfactory.h",
     "base/transportinfo.h",
     "base/turnport.cc",
     "base/turnport.h",
     "base/udpport.h",
@@ skipping 146 matching lines @@
       "//testing/gmock",
       "//testing/gtest",
     ]
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
     defines = [ "GTEST_RELATIVE_PATH" ]
   }
 }