IqRequest implementations: calls the callback when response is received.

remoting/jingle_glue/javascript_iq_request.cc

Index: remoting/jingle_glue/javascript_iq_request.cc
diff --git a/remoting/jingle_glue/javascript_iq_request.cc b/remoting/jingle_glue/javascript_iq_request.cc
index 0b75c71a51244790a45ed78becd5d36efcb72c61..b08ffe980c0d173fcf11095035b926f4f209a924 100644
--- a/remoting/jingle_glue/javascript_iq_request.cc
+++ b/remoting/jingle_glue/javascript_iq_request.cc
@@ -57,7 +57,7 @@ void JavascriptIqRegistry::OnIncomingStanza(const buzz::XmlElement* stanza) {
     // JavascriptIqRequest::SendIq(), but remove in
     // JavascriptIqRegistry::OnIq().  We should try to keep the
     // registration/deregistration in one spot.
-    if (it->second->callback_.is_null()) {
+    if (!it->second->callback_.is_null()) {
       it->second->callback_.Run(stanza);
       it->second->callback_.Reset();
     } else {