Merge "Check for null call id in ConnectionServiceWrapper"

            @Override

            public void onSuccess() {

                String callId = mCallIdMapper.getCallId(call);

                if (callId == null) {

                    Log.w(ConnectionServiceWrapper.this, "Call not present"

                            + " in call id mapper, maybe it was aborted before the bind"

                            + " completed successfully?");

                    response.handleCreateConnectionFailure(

                            new DisconnectCause(DisconnectCause.CANCELED));

                    return;

                }

                mPendingResponses.put(callId, response);

                GatewayInfo gatewayInfo = call.getGatewayInfo();