android/app/src/main/res/drawable-v21/ic_menu_send.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="24.0"
    android:viewportWidth="24.0">
    <path
        android:fillColor="#FF000000"
        android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z" />
</vector>