Merges in braille bug fixes from ChromeVox upstream.

TEST=Verify each bug in Aura no longer reproduces. Please see upstream logs for further details.
BUG=chromium:291282

Change-Id: I78d44d2e57a91f6b73e7cf8d95d9dce7c89ffb56
Reviewed-on: https://chromium-review.googlesource.com/170928
Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Tested-by: David Tseng <dtseng@chromium.org>
1 file changed