Accept b/ for bug IDs in ANGLE CLs. Bug: b/151095080 Change-Id: Ic9da14a1476958eb00d4499dacdaa9c529b0626c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2152849 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>