skslc now uses standard Skia caps

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4660

Change-Id: Idaedae3f81426b97f5052bb872cdf0610e47a84f
Reviewed-on: https://skia-review.googlesource.com/4660
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
14 files changed