Support comments that were lacking the final IE/Edge version that exhibits
the bug were checked & updated. Links to the Chromium bug tracker were updated.
Code in tests related to unsupported browsers (like Android 2.3 in non-basic
tests) has been removed.
Fixes gh-2868
Closes gh-2949
-2 bytes to the gzipped size and code looks a bit nicer
This wasn't landed to the compat branch though, since size would increase
with this cherry-pick
Closes gh-1856