This reverts commit a624a534ed.
Reason for revert: Bad perf
Original change's description:
> Use spin lock in SkIDChangeListener
>
> This lock should almost never be contested. This simplifies things and
> also avoid mutex locks when one thread has multiple refs on a path,
> image, ...
>
> Change-Id: I909b490363cb9e81b38ed9edd04272133fb2692b
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/274676
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>
TBR=bsalomon@google.com,brianosman@google.com
Change-Id: I45ec3241906429e4d0783b68ebe6398079b73d36
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/274956
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
64a3f8fcb7