[omnibox chrome:omnibox] 1-letter boolean column headers.

Currently, boolean columns are too narrow (18px) to display more than 1
character without becoming '...'. This CL changes all boolean column headers to
their first character, and adds the full header title to the tooltip.

Bug: 891303
Change-Id: I8e85810d0fbcfbd0569b2cacf979e0eac8aee7b2
Reviewed-on: https://chromium-review.googlesource.com/c/1380963
Commit-Queue: manuk hovanesian <manukh@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617850}
1 file changed