A quick skim of what I think is the relevant file[1] in the chrome source suggests that would work. So worth a shot. If you can deploy enterprise chrome settings to the tablets that's also apparently an option.

Here's what I'm assuming is the relevant bugtracker entry for the implementation [2].

[1]: https://chromium.googlesource.com/chromium/src/+/19719792bbd...

[2]: https://bugs.chromium.org/p/chromium/issues/detail?id=139491...