Make GrFillRectOp and GrTextureOp consistent re AA-upgrading and size checks

I believe GrFillRectOp wasn't handling AA-upgrading correctly. Both ops now also check that they aren't exceeding the index buffer limits for both AA and non-AA draws.

Change-Id: Iae586b92e1f27a908a54ae881f2b1db21ec1afc8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/251360
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
4 files changed