manual bench rebase after 679426c

In response to:
- new SKPs
- Kelvin's changes around regression testing

R=robertphillips@google.com, kelvinly@google.com
TBR=robertphillips@google.com

Bypassing trybots:
NOTRY=true

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/332483004
10 files changed