Remove GrSurface::desc() method.

Change-Id: If158dee90b3b0f80aa9c674180fbe6abd5b27d3f
Reviewed-on: https://skia-review.googlesource.com/17268
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
4 files changed