Add dial extras to test app.

import android.provider.CallLog.Calls;

import android.telecom.PhoneAccount;

import android.telecom.TelecomManager;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.EditText;

        final TelecomManager telecomManager =

                (TelecomManager) getSystemService(Context.TELECOM_SERVICE);

        telecomManager.placeCall(Uri.fromParts(PhoneAccount.SCHEME_TEL,

                mNumberView.getText().toString(), null), null);

                mNumberView.getText().toString(), null), createCallIntentExtras());

    }

    private void testVoicemail() {

        }

        Toast.makeText(this, "Privileged dialer operation succeeded", Toast.LENGTH_SHORT).show();

    }

    private Bundle createCallIntentExtras() {

        Bundle extras = new Bundle();

        extras.putString("com.android.server.telecom.testapps.CALL_EXTRAS", "Yorke was here");

        Bundle intentExtras = new Bundle();

        intentExtras.putBundle(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS, extras);

        Log.i("Santos xtr", intentExtras.toString());

        return intentExtras;

    }

}