Revert "Share GP implementation between GrFillRectOp and GrTextureOp"

This reverts commit 024e262712aec2e3210b88bbd45b99dd6c241f8b.

Reason for revert: Likely responsible for Chrome roll failure.

Original change's description:
> Share GP implementation between GrFillRectOp and GrTextureOp
> 
> Bug: skia:
> Change-Id: I6c71dac4cf88f274a39f121f0b5315e6c5b914c8
> Reviewed-on: https://skia-review.googlesource.com/c/173700
> Commit-Queue: Michael Ludwig <michaelludwig@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,brianosman@google.com,michaelludwig@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:
Change-Id: Ib3972e6e187c61946901e2cf9ce34c8b4d7e33ea
Reviewed-on: https://skia-review.googlesource.com/c/173772
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
4 files changed