Correct stats for RTCPeerConnectionStats.dataChannels[Opened/Closed].

webrtc/api/datachannel.cc

 /*
  *  Copyright 2012 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 462 matching lines @@
 
 void DataChannel::SetState(DataState state) {
   if (state_ == state) {
     return;
   }
 
   state_ = state;
   if (observer_) {
     observer_->OnStateChange();
   }
-  if (state_ == kClosed) {
+  if (state_ == kOpen) {
+    SignalOpened(this);
+  } else if (state_ == kClosed) {
     SignalClosed(this);
   }
 }
 
 void DataChannel::DisconnectFromProvider() {
   if (!connected_to_provider_)
     return;
 
   provider_->DisconnectDataChannel(this);
   connected_to_provider_ = false;
@@ skipping 148 matching lines @@
     QueueControlMessage(buffer);
   } else {
     LOG(LS_ERROR) << "Closing the DataChannel due to a failure to send"
                   << " the CONTROL message, send_result = " << send_result;
     Close();
   }
   return retval;
 }
 
 }  // namespace webrtc