GitLab

Use OnceCallback where possible, and use BindRepeating() where it is
meant to be a RepeatingCallback.

TBR=sergeyu@chromium.org

Bug: 1007709
Change-Id: I4408f77d876e5b72017892ebc2195dafabadfccd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1943048Reviewed-by: danakj <danakj@chromium.org>
Reviewed-by: vmpstr <vmpstr@chromium.org>
Commit-Queue: danakj <danakj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720028}