device/drawable-anydpi-v21/ic_widgets_black_24dp.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
        android:width="24dp"
        android:height="24dp"
        android:viewportWidth="24.0"
        android:viewportHeight="24.0">
    <path
        android:fillColor="#FF000000"
        android:pathData="M13,13v8h8v-8h-8zM3,21h8v-8L3,13v8zM3,3v8h8L11,3L3,3zM16.66,1.69L11,7.34 16.66,13l5.66,-5.66 -5.66,-5.65z"/>
</vector>