additional skslc vector optimizations

Bug: skia:
Change-Id: I845d0952c281835a630882ae4026277c93ccf542
Reviewed-on: https://skia-review.googlesource.com/14406
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
2 files changed