Reland "remove drawing from ShaderMaskBench ctor"

This is a reland of 4c5f3ba15510a300d0a6459155368c1f73f3b5fb

Added: store the function pointer directly instead of a ref to it.

Original change's description:
> remove drawing from ShaderMaskBench ctor
>
> The drawing in the ctor makes debugging and measuring the
> RasterPipeline difficult. Move to onDelayedSetup().
>
> Change-Id: I74ca28d5d86d70d23e67188f1363b002ba85c6ef
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452358
> Commit-Queue: Herb Derby <herb@google.com>
> Auto-Submit: Herb Derby <herb@google.com>
> Reviewed-by: John Stiles <johnstiles@google.com>

Change-Id: I38c5c97bf03c8122abeb8aa228b922cfd9e6ec76
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452231
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
1 file changed