Merge "Clean up: delete unused methods"

        private DialogInterface.OnCancelListener mOnCancelListener;

        private DialogInterface.OnDismissListener mOnDismissListener;

        public SettingsDialogFragment() {

            /* do nothing */

        }

        public SettingsDialogFragment(DialogCreatable fragment, int dialogId) {

            super(fragment, dialogId);

            if (!(fragment instanceof Fragment)) {

package com.android.settings.connecteddevice.usb;

import android.content.Context;

import android.os.Bundle;

import android.provider.SearchIndexableResource;

import androidx.annotation.VisibleForTesting;

        return R.xml.usb_details_fragment;

    }

    @Override

    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {

        super.onCreatePreferences(savedInstanceState, rootKey);

    }

    public boolean isConnected() {

        return mUsbReceiver.isConnected();

    }

    @Override

    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {

        mUsbBackend = new UsbBackend(context);