Probably still worth having but I haven't been able to reproduce the perf regression in
crbug.com/668179 with it yet.
Change-Id: If3b0f2998ff38a17a173895ed9cea6950a81f6b7
Reviewed-on: https://skia-review.googlesource.com/5382
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
