Revert of TransportController refactoring.

webrtc/p2p/base/transportchannelproxy.h

Index: webrtc/p2p/base/transportchannelproxy.h
diff --git a/webrtc/p2p/base/transportchannelproxy.h b/webrtc/p2p/base/transportchannelproxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..80ee20aabb06de9851560de3168b40646813b82a
--- /dev/null
+++ b/webrtc/p2p/base/transportchannelproxy.h
@@ -0,0 +1,96 @@
+/*
+ *  Copyright 2004 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.
+ */
+
+#ifndef WEBRTC_P2P_BASE_TRANSPORTCHANNELPROXY_H_
+#define WEBRTC_P2P_BASE_TRANSPORTCHANNELPROXY_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "webrtc/p2p/base/transportchannel.h"
+#include "webrtc/base/messagehandler.h"
+
+namespace rtc {
+class Thread;
+}
+
+namespace cricket {
+
+class TransportChannelImpl;
+
+// Proxies calls between the client and the transport channel implementation.
+// This is needed because clients are allowed to create channels before the
+// network negotiation is complete.  Hence, we create a proxy up front, and
+// when negotiation completes, connect the proxy to the implementaiton.
+class TransportChannelProxy : public TransportChannel,
+                              public rtc::MessageHandler {
+ public:
+  TransportChannelProxy(const std::string& content_name,
+                        int component);
+  ~TransportChannelProxy() override;
+
+  TransportChannelImpl* impl() { return impl_; }
+
+  TransportChannelState GetState() const override;
+
+  // Sets the implementation to which we will proxy.
+  void SetImplementation(TransportChannelImpl* impl);
+
+  // Implementation of the TransportChannel interface.  These simply forward to
+  // the implementation.
+  int SendPacket(const char* data, size_t len,
+                 const rtc::PacketOptions& options,
+                 int flags) override;
+  int SetOption(rtc::Socket::Option opt, int value) override;
+  bool GetOption(rtc::Socket::Option opt, int* value) override;
+  int GetError() override;
+  virtual IceRole GetIceRole() const;
+  bool GetStats(ConnectionInfos* infos) override;
+  bool IsDtlsActive() const override;
+  bool GetSslRole(rtc::SSLRole* role) const override;
+  virtual bool SetSslRole(rtc::SSLRole role);
+  bool SetSrtpCiphers(const std::vector<std::string>& ciphers) override;
+  bool GetSrtpCipher(std::string* cipher) override;
+  bool GetSslCipher(std::string* cipher) override;
+  rtc::scoped_refptr<rtc::RTCCertificate> GetLocalCertificate() const override;
+  bool GetRemoteSSLCertificate(rtc::SSLCertificate** cert) const override;
+  bool ExportKeyingMaterial(const std::string& label,
+                            const uint8* context,
+                            size_t context_len,
+                            bool use_context,
+                            uint8* result,
+                            size_t result_len) override;
+
+ private:
+  // Catch signals from the implementation channel.  These just forward to the
+  // client (after updating our state to match).
+  void OnReceivingState(TransportChannel* channel);
+  void OnWritableState(TransportChannel* channel);
+  void OnReadPacket(TransportChannel* channel, const char* data, size_t size,
+                    const rtc::PacketTime& packet_time, int flags);
+  void OnReadyToSend(TransportChannel* channel);
+  void OnRouteChange(TransportChannel* channel, const Candidate& candidate);
+
+  void OnMessage(rtc::Message* message) override;
+
+  typedef std::pair<rtc::Socket::Option, int> OptionPair;
+  typedef std::vector<OptionPair> OptionList;
+  rtc::Thread* worker_thread_;
+  TransportChannelImpl* impl_;
+  OptionList options_;
+  std::vector<std::string> pending_srtp_ciphers_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannelProxy);
+};
+
+}  // namespace cricket
+
+#endif  // WEBRTC_P2P_BASE_TRANSPORTCHANNELPROXY_H_