Revert "remove SkMiniPicture and co."

This reverts commit 046ecb1b5e0133bde915ffbd0f727224169f39b7.

Reason for revert: Flutter

Original change's description:
> remove SkMiniPicture and co.
> 
> This was an optimization for Chromium that I believe is no longer
> relevant in a world of PaintOpBuffers.
> 
> Change-Id: Ic7526715a0ef1c3cec387a44189b7d56d5107af5
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213680
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Klein <mtklein@google.com>

TBR=mtklein@google.com,reed@google.com,chinmaygarde@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Ibf1ccee88c9ea140210cb9258ec96f9841e84c24
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/214661
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
11 files changed