Revert of SkCanvas::resetForNextPicture() (patchset #4 id:60001 of https://codereview...

Revert of SkCanvas::resetForNextPicture() (patchset #4 id:60001 of https://codereview.chromium.org/1067893002/)

Reason for revert:
https://uberchromegw.corp.google.com/i/client.skia/builders/Linux%20Tests/builds/1816

Original issue's description:
> SkCanvas::resetForNextPicture()
>
> No diffs against head for DM --config 8888 gpu 2ndpic-8888 2ndpic-gpu.
>
>   picture_overhead_draw	1.62us ->  1.6us	0.99x
> picture_overhead_nodraw	 792ns ->  342ns	0.43x
>
> tiles and serialization modes will also test this a bit.
>
> BUG=chromium:470553
>
> Committed: https://skia.googlesource.com/skia/+/f920e468ac66a36c9653d1b11181480295044c7d

TBR=mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:470553

Review URL: https://codereview.chromium.org/1062353002