remove drawing from ctor

Remove drawing from the bench's constructor. This allows easier
debugging and measurement of RasterPipeline.

Change-Id: Iec974eef171917e849130fc68361e80ec1642100
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452357
Commit-Queue: Herb Derby <herb@google.com>
Auto-Submit: Herb Derby <herb@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
1 file changed