GitLab

Converts the SessionRestore::CallbackList to a RepeatingCallbackList and
converts the Registration method to take a RepeatingCallback, due to
usage.
Converts quit_closure_for_sync_restore_ into a OnceClosure.
Converts a bind in tab_loader whose receiving end had previously been
converted.

Also converts one session restore notification registration in
chrome_browser_main_posix to base::BindRepeating, as part of ongoing
efforts to convert the top-level chrome/browser files.

Bug: 1007635
Change-Id: I5034a3f801e162f987becdbe9c64073a905bac5a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300604
Auto-Submit: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/master@{#788818}