Reland of Add fast normalize for SkLightingImageFilter. (patchset #1 id:1 of https://codereview.chromium.org/1244523002/)

Reason for revert:
Florin will rebaseline the images.

Original issue's description:
> Revert of Add fast normalize for SkLightingImageFilter. (patchset #2 id:20001 of https://codereview.chromium.org/1240023002/)
>
> Reason for revert:
> Speculative revert -- DEPS roll block on linux_blink_rel
>
> https://storage.googleapis.com/chromium-layout-test-archives/linux_blink_rel/71483/layout-test-results/results.html
>
> Original issue's description:
> > Add fast normalize for SkLightingImageFilter.
> >
> > The normalize routine in SkPoint3 is very robust. However, for simple
> > lighting cases we prefer speed over robustness. This fixes a perf
> > regression in smoothness.tough_filters_cases.
> >
> > BUG=chromium:510562
> >
> > Committed: https://skia.googlesource.com/skia/+/dfa0ecf169db87f7afddd93bc1c500de481a62c7
>
> TBR=reed@google.com,senorblanco@google.com,senorblanco@chromium.org,jvanverth@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:510562
>
> Committed: https://skia.googlesource.com/skia/+/ac66a8122b27c388cc74b3913d9a9be351a44e54

TBR=reed@google.com,senorblanco@google.com,senorblanco@chromium.org,reed@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:510562

Review URL: https://codereview.chromium.org/1241583007
1 file changed