Revert of Move copy-surface-as-draw fallback to GrGLGpu. (patchset #12 id:220001...

Revert of Move copy-surface-as-draw fallback to GrGLGpu. (patchset #12 id:220001 of https://codereview.chromium.org/1144433002/)

Reason for revert:
Many GMs changed, some totally busted.

Original issue's description:
> Move copy-surface-as-draw fallback to GrGLGpu.
>
> Committed: https://skia.googlesource.com/skia/+/5df6fee929823f50c55cc50f7c882a309c1b1de9

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

Review URL: https://codereview.chromium.org/1142003003