Return display name in SipConnection.getCnapName().

import android.os.Message;

import android.telephony.PhoneNumberUtils;

import android.telephony.ServiceState;

import android.text.TextUtils;

import android.util.Log;

import com.android.internal.telephony.Call;

            this(owner, callee, getUriString(callee));

        }

        @Override

        public String getCnapName() {

            String displayName = mPeer.getDisplayName();

            return TextUtils.isEmpty(displayName) ? null

                                                  : displayName;

        }

        @Override

        public int getNumberPresentation() {

            return Connection.PRESENTATION_ALLOWED;

        }

        void initIncomingCall(SipAudioCall sipAudioCall, Call.State newState) {

            setState(newState);

            mSipAudioCall = sipAudioCall;