Update benchmarks to use new filter factories

Also refactors 3 duplicate functions that converted an SkTileMode to
a char*. This will rename the matrix convolution benchmarks that used
"clampToBlack" to the more modern "decal" terminology.

Bug: skia:9280
Change-Id: I43a4f9edeba36eb5af1243f7e4ab7647253b91f2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230883
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
15 files changed