Remove kDefault_GrSurfaceOrigin

Change-Id: Ic55d488287add32e5a32b5a77415e16cebf4c1ee
Reviewed-on: https://skia-review.googlesource.com/29120
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
13 files changed