Use QuadHelper and PatternHelper in more places

Propagating usage of these helpers will, hopefully, improve code reuse and centralize future changes.

This is pulled out of https://skia-review.googlesource.com/c/skia/+/252161/ (Add GrPrimitiveType to GrProgramInfo)

Bug: skia:9455
Change-Id: I9b46e42db8561d98fb724a41a1f7a3bec4bf97b0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252484
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
15 files changed