Revert "remove drawing from ShaderMaskBench ctor"
Revert "remove drawing from ShaderMaskBench ctor"

This reverts commit 4c5f3ba15510a300d0a6459155368c1f73f3b5fb.

Reason for revert: Speculative - appears to be breaking various perf bots

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: Iae41dc5809de6b239670d00fb31dea73005f9124
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452230
Auto-Submit: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Commit-Queue: Rubber Stamper <d516c4cc2192058ab8dae3d306acbdaf2ce6574f@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <d516c4cc2192058ab8dae3d306acbdaf2ce6574f@appspot.gserviceaccount.com>

google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,google/skia