Use sk_sp to own GrCaps in GrContext.

Change-Id: I46cd37132ecdf0f93be4509c6a06fb74cb185076
Reviewed-on: https://skia-review.googlesource.com/82625
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2 files changed