Revert "hide drawlooper from paint"

This reverts commit 766b42b7ba8e421cf1a3bccdcb523e37ac1a40ab.

Reason for revert: afaict this is changing a lot of image filter GMs for the worse

Original change's description:
> hide drawlooper from paint
> 
> Bug: skia: 4783
> 
> Change-Id: I1d0ad1683a2e8345d8ea13db9b69b568ada827dc
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/228573
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=fmalita@chromium.org,reed@google.com

Change-Id: I0bfd48ada3f8e48a774527caccf7abdb7a1cc470
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia: 4783
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229005
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
24 files changed