Remove origin field from GrSurface

This mainly consists of rm origin from GrSurface and the wrapBackEnd*
methods and then re-adding an explicit origin parameter to all the 
GrGpu methods that need it.

Change-Id: Iabd79ae98b227b5b9409f3ab5bbcc48af9613c18
Reviewed-on: https://skia-review.googlesource.com/26363
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
40 files changed