Remove GrSurfaceDesc member from GrSurfaceProxy.

Stores the config, origin, and dimensions in GrSurfaceProxy, sample count in GrRenderTargetProxy, and "was constructed with mip maps" in GrTextureProxy.

Change-Id: Iee058674dce49107a991cca9d083cd33e3572809
Reviewed-on: https://skia-review.googlesource.com/17209
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
30 files changed