Use os_log_with_type in ANGLE's logging facility rather than fprintf.

Bug: angleproject:4263
Change-Id: I0c418fc5544001bf4f47ff511d05de2f0ebaa1de
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1987145Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: James Darpinian <jdarpinian@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>