I rest my case on the quantum qualities of whitewashing or as Vixdean put it : "whitewashing".
No, it actually has a very discreet definition:
https://en.wikipedia.org/wiki/Whitewashing_in_film
Whitewashing is a casting practice in the film industry of the United States in which white actors are cast in historically non-white character roles.
And yes, neither "random extra in WWII film" or "cyborg ninja girl" qualify as as "historically non-white character roles".