Pull non-substantive changes out of omnibus GrSurface CL

https://skia-review.googlesource.com/c/26363 (Remove origin field from GrSurface) is
already too large. This pulls some of the cosmetic changes out for separate review.
Change-Id: I1d8b95522144b2f4cbd916ef38faa3dde6f78087
Reviewed-on: https://skia-review.googlesource.com/27840
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
28 files changed