add bench for highcontrast-colorfilter

Change-Id: I1e8275de780c5db82a715edfa91ef3fd90228e44
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/279516
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed