ref: fb901269effd746c8a2318b1393a581e18f142ae
dir: /test/build/android/res/values/dimens.xml/
<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>