Revert of Make P2PTransportChannel inherit from IceTransportInternal.

webrtc/p2p/base/jseptransport.h

Index: webrtc/p2p/base/jseptransport.h
diff --git a/webrtc/p2p/base/jseptransport.h b/webrtc/p2p/base/jseptransport.h
index 44ae049ee0868cc664a67af190eb750f2887535b..cc05ec097f9c44b03f1ee11721aa6dfc6a1fcf71 100644
--- a/webrtc/p2p/base/jseptransport.h
+++ b/webrtc/p2p/base/jseptransport.h
@@ -17,15 +17,15 @@
 #include <vector>
 
 #include "webrtc/base/constructormagic.h"
-#include "webrtc/base/messagequeue.h"
 #include "webrtc/base/optional.h"
-#include "webrtc/base/rtccertificate.h"
-#include "webrtc/base/sigslot.h"
-#include "webrtc/base/sslstreamadapter.h"
 #include "webrtc/p2p/base/candidate.h"
 #include "webrtc/p2p/base/p2pconstants.h"
 #include "webrtc/p2p/base/sessiondescription.h"
 #include "webrtc/p2p/base/transportinfo.h"
+#include "webrtc/base/messagequeue.h"
+#include "webrtc/base/rtccertificate.h"
+#include "webrtc/base/sigslot.h"
+#include "webrtc/base/sslstreamadapter.h"
 
 namespace cricket {
 
@@ -335,6 +335,8 @@
                      std::string* error_desc) const;
 
  private:
+  TransportChannelImpl* GetChannel(int component);
+
   // Negotiates the transport parameters based on the current local and remote
   // transport description, such as the ICE role to use, and whether DTLS
   // should be activated.