Move GrMakeCachedBitmapProxy work in lazy mode

This basically wraps the bitmap in an SkImage and uses the GrMakeCachedImageProxy
call to create the proxy.

Bug: skia:
Change-Id: I648a9cac3a316231bfb1bcedaae2009b7de0356c
Reviewed-on: https://skia-review.googlesource.com/105360
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
5 files changed