GitLab

Allow builder and metadata access to HomeButton class.

Bug: 1130078
Change-Id: Idbe96f4888b9fb77406efbafbe2d04110f7ea8f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450848
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816826}