GitLab

Converts the OpenLoginTabCallback from Callback to RepeatingCallback.
Converts base::Bind calls that were being passed to methods that take
RepeatingCallback's to BindRepeating.
Converts a few Callbacks being used as OpenLoginTabCallback in
chrome/browser as well, since that is how the initial need for changes
was discovered.

Bug: 1007635,714018
Change-Id: I3a514a2eff2d821e2a34d9537440407eab1619e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2297565
Commit-Queue: Eric Roman <eroman@chromium.org>
Reviewed-by: Eric Roman <eroman@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Auto-Submit: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789666}