google-material-design-icons/android/action/maximize/materialiconstwotone/black/res/drawable/twotone_maximize_24.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M3,3h18v2H3V3z"/>
</vector>