Fire a signal when the transport channel state changes

webrtc/p2p/base/faketransportcontroller.h

 /*
  *  Copyright 2009 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 152 matching lines @@
       state_ = STATE_CONNECTING;
       set_writable(false);
     }
   }
 
   void SetConnectionCount(size_t connection_count) {
     size_t old_connection_count = connection_count_;
     connection_count_ = connection_count;
     if (connection_count)
       had_connection_ = true;
+    // In this fake transport channel, |connection_count_| determines the
+    // transport channel state.
     if (connection_count_ < old_connection_count)
-      SignalConnectionRemoved(this);
+      SignalStateChanged(this);
   }
 
   void SetCandidatesGatheringComplete() {
     if (gathering_state_ != kIceGatheringComplete) {
       gathering_state_ = kIceGatheringComplete;
       SignalGatheringState(this);
     }
   }
 
   void SetReceiving(bool receiving) { set_receiving(receiving); }
@@ skipping 395 matching lines @@
     }
   }
 
  private:
   bool fail_create_channel_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_FAKETRANSPORTCONTROLLER_H_