Revert of Refactor GrBufferAllocPools to use resource cache (patchset #9 id:160001 of https://codereview.chromium.org/1139753002/)

Reason for revert:
Perf Regression for some bot/skp combinations

Original issue's description:
> Refactor GrBufferAllocPools to use resource cache
>
> Committed: https://skia.googlesource.com/skia/+/c5f1c5414fc8f73cbefadcc1b24ec794056fa203

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

Review URL: https://codereview.chromium.org/1129863008
9 files changed