Follow-up for https://chromium-review.googlesource.com/c/chromium/src/+/1005993.

The browser tests added in that file don't work on Android, that needs to be addressed.

trchen@ recommended a browser test that included a thick-bordered OOPIF: https://chromium-review.googlesource.com/c/chromium/src/+/1005993/15/third_party/blink/renderer/core/frame/remote_frame_view.cc#100

Also it would be good to expand the scope of the nested OOPIF test as per: https://chromium-review.googlesource.com/c/chromium/src/+/1005993/12/content/browser/site_per_process_browsertest.cc#11632