Revert of make the DtlsTransportWrapper inherit form DtlsTransportInternal

webrtc/api/webrtcsession_unittest.cc

Index: webrtc/api/webrtcsession_unittest.cc
diff --git a/webrtc/api/webrtcsession_unittest.cc b/webrtc/api/webrtcsession_unittest.cc
index 1a7a02622c42c0a9ce5da7faaf00801a9f0970c3..ca093155c81bc805215cdbbcd39238f6e6c6e660 100644
--- a/webrtc/api/webrtcsession_unittest.cc
+++ b/webrtc/api/webrtcsession_unittest.cc
@@ -46,6 +46,7 @@
 #include "webrtc/p2p/base/stunserver.h"
 #include "webrtc/p2p/base/teststunserver.h"
 #include "webrtc/p2p/base/testturnserver.h"
+#include "webrtc/p2p/base/transportchannel.h"
 #include "webrtc/p2p/client/basicportallocator.h"
 #include "webrtc/pc/channelmanager.h"
 #include "webrtc/pc/mediasession.h"
@@ -218,7 +219,7 @@
 // local/remote ports.
 class FakeSctpTransport : public cricket::SctpTransportInternal {
  public:
-  void SetTransportChannel(rtc::PacketTransportInterface* channel) override {}
+  void SetTransportChannel(cricket::TransportChannel* channel) override {}
   bool Start(int local_port, int remote_port) override {
     local_port_ = local_port;
     remote_port_ = remote_port;
@@ -245,7 +246,7 @@
 class FakeSctpTransportFactory : public cricket::SctpTransportInternalFactory {
  public:
   std::unique_ptr<cricket::SctpTransportInternal> CreateSctpTransport(
-      rtc::PacketTransportInterface*) override {
+      cricket::TransportChannel*) override {
     last_fake_sctp_transport_ = new FakeSctpTransport();
     return std::unique_ptr<cricket::SctpTransportInternal>(
         last_fake_sctp_transport_);
@@ -305,7 +306,7 @@
     if (!ch) {
       return nullptr;
     }
-    return ch->rtp_dtls_transport();
+    return ch->rtp_transport();
   }
 
   rtc::PacketTransportInterface* rtcp_transport_channel(
@@ -313,7 +314,7 @@
     if (!ch) {
       return nullptr;
     }
-    return ch->rtcp_dtls_transport();
+    return ch->rtcp_transport();
   }
 };