Add w204dp-round-watch bucket for Wear Devices

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

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<resources>

    <dimen name="screen_percentage_05">10.2dp</dimen>

    <dimen name="screen_percentage_10">20.4dp</dimen>

    <dimen name="screen_percentage_15">30.6dp</dimen>

</resources>