Revert of Revert of remove colorfilter native-565 support. complicating w/ no real value. (patchset #1 id:1 of https://codereview.chromium.org/1022673007/)

Reason for revert:
fix for chrome has landed...

Original issue's description:
> Revert of remove colorfilter native-565 support. complicating w/ no real value. (patchset #2 id:20001 of https://codereview.chromium.org/1015533011/)
>
> Reason for revert:
> skia/ext/benchmarking_canvas.cc references HasFilter16 :(
>
> Original issue's description:
> > remove colorfilter native-565 support. complicating w/ no real value.
> >
> > BUG=skia:
> > TBR=
> >
> > Committed: https://skia.googlesource.com/skia/+/2151353d161fe389cdc0db62cfe1932c7680f710
>
> TBR=reed@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/92b47c49016749249ff8521e424c4373b4a74241

TBR=reed@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1016103004
8 files changed