Revert of Modify PeerConnection for end-to-end QuicDataChannel usage

webrtc/p2p/quic/quictransportchannel.h

 /*
  *  Copyright 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.
  */
 
@@ skipping 148 matching lines @@
   }
   void AddRemoteCandidate(const Candidate& candidate) override {
     channel_->AddRemoteCandidate(candidate);
   }
   void RemoveRemoteCandidate(const Candidate& candidate) override {
     channel_->RemoveRemoteCandidate(candidate);
   }
   void SetIceConfig(const IceConfig& config) override {
     channel_->SetIceConfig(config);
   }
+  void Connect() override {
+    channel_->Connect();
+  }
 
   // QuicPacketWriter overrides.
   // Called from net::QuicConnection when |quic_| has packets to write.
   net::WriteResult WritePacket(const char* buffer,
                                size_t buf_len,
                                const net::IPAddress& self_address,
                                const net::IPEndPoint& peer_address,
                                net::PerPacketOptions* options) override;
   // Whether QuicTransportChannel buffers data when unable to write. If this is
   // set to false, then net::QuicConnection buffers unsent packets.
@@ skipping 116 matching lines @@
   rtc::scoped_refptr<rtc::RTCCertificate> local_certificate_;
   // Fingerprint of the remote peer. This must be set before we start QUIC.
   rtc::Optional<RemoteFingerprint> remote_fingerprint_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(QuicTransportChannel);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_QUIC_QUICTRANSPORTCHANNEL_H_