Add param to GrMakeCachedImageProxy to specify the SkBackingFit

Bug: skia:
Change-Id: Ic103330eb9bab9ba7beb4d1449b559b32072530b
Reviewed-on: https://skia-review.googlesource.com/103461
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
2 files changed