Use descriptor instead of cache for GrStrikeCache lookup

Change-Id: Ia8e82344d3d8b394a6d9cc14d56dcf0addeff96c
Reviewed-on: https://skia-review.googlesource.com/c/191220
Commit-Queue: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
3 files changed