GitLab

The handler is meant to be called repeatedly so convert to
RepeatingCallback. The caller already uses BindRepeating.

Bug: 1152268
Change-Id: I62af30b2ce6fa0234a7efd5f2788c4e045c25a00
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2605876Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: David Bokan <bokan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840334}