Send SignalClose to the clients of P2PSocket, if TCP socket is failed to

establish connection with remote endpoint.

If we don't send signal, TCP based cricket::Port(s) think they are still
connecting.

BUG=https://code.google.com/p/webrtc/issues/detail?id=3249
R=sergeyu@chromium.org

Review URL: https://codereview.chromium.org/288923014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271138 0039d316-1c4b-4281-b951-d872f2087c98

content/renderer/p2p/ipc_socket_factory.cc

@@ -474,8 +474,12 @@ void IpcPacketSocket::OnSendComplete() {
 
 void IpcPacketSocket::OnError() {
   DCHECK_EQ(base::MessageLoop::current(), message_loop_);
+  bool was_closed = (state_ == IS_ERROR || state_ == IS_CLOSED);
   state_ = IS_ERROR;
   error_ = ECONNABORTED;
+  if (!was_closed) {
+    SignalClose(this, 0);
+  }
 }
 
 void IpcPacketSocket::OnDataReceived(const net::IPEndPoint& address,