Add space around the data usage warning spinner.

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2017 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");

     you may not use this file except in compliance with the License.

     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software

     distributed under the License is distributed on an "AS IS" BASIS,

     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

     See the License for the specific language governing permissions and

     limitations under the License.

-->

<!-- Copied from frameworks/base/core/res/res/layout/simple_spinner_item.xml and modified

     layout height and added padding. -->

<TextView xmlns:android="http://schemas.android.com/apk/res/android"

          android:id="@android:id/text1"

          style="?android:attr/spinnerItemStyle"

          android:singleLine="true"

          android:layout_width="match_parent"

          android:layout_height="?android:attr/listPreferredItemHeightSmall"

          android:ellipsize="marquee"

          android:textAlignment="inherit"

          android:gravity="center"

          android:paddingStart="30dp"

          android:paddingEnd="30dp"/>

 No newline at end of file

                formatter.getUnitDisplayName(MeasureUnit.GIGABYTE)

            };

            final ArrayAdapter<String> adapter = new ArrayAdapter<String>(

                    getContext(), android.R.layout.simple_spinner_item, unitNames);

                    getContext(), R.layout.data_usage_spinner_item, unitNames);

            type.setAdapter(adapter);

            if (bytes > 1.5f * GB_IN_BYTES) {