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This CL fixes issue with manual proxy config exception list items being
read out incorrectly in ChromveVOX and removes unnecessary tab stop.

Fixed: 1024355
Change-Id: Ie2a24f36c072a7b451135a274d0ec15320a924c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1915319Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Azeem Arshad <azeemarshad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715164}