Thinning out the Transport class.

webrtc/p2p/base/transportcontroller.h

Index: webrtc/p2p/base/transportcontroller.h
diff --git a/webrtc/p2p/base/transportcontroller.h b/webrtc/p2p/base/transportcontroller.h
index f506e01bcf770184b23c597b2c1770c8ebcd0ad3..0ea9ac8fa7463d1db7011a0bee8efc8270bc2f32 100644
--- a/webrtc/p2p/base/transportcontroller.h
+++ b/webrtc/p2p/base/transportcontroller.h
@@ -125,6 +125,11 @@ class TransportController : public sigslot::has_slots<>,
   void DestroyTransport_w(const std::string& transport_name);
   void DestroyAllTransports_w();
 
+  // Add channel to internal list and connect signals.
+  void AddChannel_w(TransportChannelImpl* channel);
+  // Remove channel from internal list.
+  void RemoveChannel_w(TransportChannelImpl* channel);
+
   bool SetSslMaxProtocolVersion_w(rtc::SSLProtocolVersion version);
   void SetIceConfig_w(const IceConfig& config);
   void SetIceRole_w(IceRole ice_role);
@@ -152,29 +157,27 @@ class TransportController : public sigslot::has_slots<>,
   bool GetStats_w(const std::string& transport_name, TransportStats* stats);
 
   // Handlers for signals from Transport.
-  void OnTransportConnecting_w(Transport* transport);
-  void OnTransportWritableState_w(Transport* transport);
-  void OnTransportReceivingState_w(Transport* transport);
-  void OnTransportCompleted_w(Transport* transport);
-  void OnTransportFailed_w(Transport* transport);
-  void OnTransportGatheringState_w(Transport* transport);
-  void OnTransportCandidatesGathered_w(
-      Transport* transport,
-      const std::vector<Candidate>& candidates);
-  void OnTransportRoleConflict_w();
+  void OnChannelWritableState_w(TransportChannel* channel);
+  void OnChannelReceivingState_w(TransportChannel* channel);
+  void OnChannelGatheringState_w(TransportChannelImpl* channel);
+  void OnChannelCandidateGathered_w(TransportChannelImpl* channel,
+                                    const Candidate& candidate);
+  void OnChannelRoleConflict_w(TransportChannelImpl* channel);
+  void OnChannelConnectionRemoved_w(TransportChannelImpl* channel);
 
   void UpdateAggregateStates_w();
-  bool HasChannels_w();
 
   rtc::Thread* const signaling_thread_ = nullptr;
   rtc::Thread* const worker_thread_ = nullptr;
   typedef std::map<std::string, Transport*> TransportMap;
   TransportMap transports_;
 
+  std::vector<TransportChannelImpl*> channels_;
+
   PortAllocator* const port_allocator_ = nullptr;
   rtc::SSLProtocolVersion ssl_max_version_ = rtc::SSL_PROTOCOL_DTLS_10;
 
-  // Aggregate state for Transports
+  // Aggregate state for TransportChannelImpls.
   IceConnectionState connection_state_ = kIceConnectionConnecting;
   bool receiving_ = false;
   IceGatheringState gathering_state_ = kIceGatheringNew;