move all picture version crap into single header

Change-Id: Idc11d86809bc20e870bc546fabb26db607739936
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230885
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
15 files changed