Turn off domain in GrTextureOp when src rect contains entire proxy

Move check for turning off domain when nearest/no-aa to GrRenderTargetContext.

Change-Id: I3c071b5f73fb3134218453204f30c3020c9dad9a
Reviewed-on: https://skia-review.googlesource.com/130143
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
3 files changed