GitLab

* restore search magnifying glass (aka loupe) as default icon @ 20px
* add 8px of bottom margin below last realbox result
* add feature to experiment with Google (g) icon ("super g")

R=mahmadi@chromium.org

Bug: 1017495
Change-Id: I4db697dcf66d20ab2509ccbec35317f80919c10c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1884951
Commit-Queue: Dan Beam <dbeam@chromium.org>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710626}