Revert "Patch up ref counting of proxies"

This reverts commit 8d5ce2d9ede0c241b906f1a0df9dac3cf3c3aa55.

Reason for revert: ASAN failures

Original change's description:
> Patch up ref counting of proxies
> 
> Bug: skia:
> Change-Id: If746283d788368bf7aad6d285f181d8531768e61
> Reviewed-on: https://skia-review.googlesource.com/70024
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>

TBR=bsalomon@google.com,robertphillips@google.com

Change-Id: Ia2addb2a5dacad9e9c0080d1e53084bc62b780e0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/70540
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
4 files changed