Remove origin from GrGpu::writePixels

Change-Id: Iea3d68d282420f28623ebea315499fbd7ad9d471
Reviewed-on: https://skia-review.googlesource.com/131526
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
9 files changed