action/drawable-anydpi-v21/ic_flip_to_back_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="M9,7L7,7v2h2L9,7zM9,11L7,11v2h2v-2zM9,3c-1.11,0 -2,0.9 -2,2h2L9,3zM13,15h-2v2h2v-2zM19,3v2h2c0,-1.1 -0.9,-2 -2,-2zM13,3h-2v2h2L13,3zM9,17v-2L7,15c0,1.1 0.89,2 2,2zM19,13h2v-2h-2v2zM19,9h2L21,7h-2v2zM19,17c1.1,0 2,-0.9 2,-2h-2v2zM5,7L3,7v12c0,1.1 0.89,2 2,2h12v-2L5,19L5,7zM15,5h2L17,3h-2v2zM15,17h2v-2h-2v2z"/>
</vector>