Make a GM for checking blur bounds.

Change-Id: I30e7ac2ad37f666e3fafe94a3f52a764e1e2e652
Reviewed-on: https://skia-review.googlesource.com/88040
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2 files changed