Re-enable explicit resource allocation in Skia (take 2)

Unsurprisingly, given how we're adding them to the opList's deferredProxy list, a proxy can appear twice.

Change-Id: I474357a1c3ee8cedf51dbeffcd0e0a96f396375c
Reviewed-on: https://skia-review.googlesource.com/103701
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
5 files changed