ccpr: Pack wind into existing varyings

Bug: skia:
Change-Id: I189a22a6779af5d3fa7671992da50ede36eaaa8f
Reviewed-on: https://skia-review.googlesource.com/102067
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
8 files changed