Update PathIterBench to use the new RangeIter instead of RawIter

Change-Id: I9508790d67bf62b5a064ff5222a74e9566354351
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/287888
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed