Log when the user opens a bookmark from the Mac top menu.

This is distinct from opening a bookmark from bookmarks bar, manager,
app/wrench menu, etc.

Bug: 951909
Change-Id: I8ba878a126d21696e74f821535929a59db3c120e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1574424
Commit-Queue: Dana Fried <dfried@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652683}
5 files changed