Making WebRtcSession fire a destroyed signal.

talk/app/webrtc/webrtcsession.cc

Index: talk/app/webrtc/webrtcsession.cc
diff --git a/talk/app/webrtc/webrtcsession.cc b/talk/app/webrtc/webrtcsession.cc
index d8f76379c1b8925b537a9e83c3a0bf98c9c908f4..c6d1856f0353957224932aeb8e0c076e4ccdfaa9 100644
--- a/talk/app/webrtc/webrtcsession.cc
+++ b/talk/app/webrtc/webrtcsession.cc
@@ -590,6 +590,7 @@ WebRtcSession::~WebRtcSession() {
     SignalDataChannelDestroyed();
     channel_manager_->DestroyDataChannel(data_channel_.release());
   }
+  SignalDestroyed();
 
   LOG(LS_INFO) << "Session: " << id() << " is destroyed.";
 }
@@ -1428,7 +1429,7 @@ bool WebRtcSession::InsertDtmf(const std::string& track_id,
 }
 
 sigslot::signal0<>* WebRtcSession::GetOnDestroyedSignal() {
-  return &SignalVoiceChannelDestroyed;
+  return &SignalDestroyed;
 }
 
 bool WebRtcSession::SendData(const cricket::SendDataParams& params,