chromium/chrome/browser/ui/android/omnibox/java/res/drawable/ic_content_copy_black.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"
        android:tint="@macro/default_icon_color">
    <path
        android:pathData="M18,21L4,21L4,7L2,7v14c0,1.1 0.9,2 2,2h14v-2zM21,17L21,3c0,-1.1 -0.9,-2 -2,-2L8,1c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h11c1.1,0 2,-0.9 2,-2zM19,17L8,17L8,3h11v14z"
        android:fillColor="@android:color/black"/>
</vector>