[M60 cherry-pick] Disable deferred proxies for M60 branch

No-Tree-Checks: true
No-Try: true
No-Presubmit: true
Bug: 720325
Change-Id: I215af7db2536a27c941f5f1ff6f2af8cf41f4189
Reviewed-on: https://skia-review.googlesource.com/18592
Reviewed-by: Brian Salomon <bsalomon@google.com>
5 files changed