Revert "Re-enable deferred proxies in Chrome"

This reverts commit 555c49c3479edf1692579c06a5c13c39d3741692.

Reason for revert: layout tests

Original change's description:
> Re-enable deferred proxies in Chrome
> 
> Now that https://skia-review.googlesource.com/c/14605/ (Allow TextureSamplers to have null GrTexture pointer) has landed we should be able to re-enable deferred proxies in Chrome.
> 
> Bug: 715488
> Change-Id: Ibd38e5ddf0558b94f09e29f17837e6abfd22fa34
> Reviewed-on: https://skia-review.googlesource.com/15252
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> 

TBR=bsalomon@google.com,robertphillips@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Ie90e64a2e4d5efc4b6909a04f8a862dd3a708d97
Reviewed-on: https://skia-review.googlesource.com/15809
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
3 files changed