Remove GrGpu.h from GrResourceProvider.h

Noticed this while cleaning up GrResourceProvider.h's usage. It seems like a powerful header to just be splashing around.

Change-Id: I686fea61354a7e3c1c759627ffe4a560f7945f83
Reviewed-on: https://skia-review.googlesource.com/20040
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
19 files changed