GitLab

toolbar.

This eliminates a lot of complicated math in favor of just finding the
offset of the child (bookmarks bar, toolbar) into the background image
and painting the view background.

Bug: 993502
Change-Id: I0502a1468abfe50ea919de863244f0bd5558d4b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1847775
Commit-Queue: Dana Fried <dfried@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704048}