Revert "Revert "impl SkSerial picture procs""

This reverts commit 2a3009931d7bb0f5ca31490c4cf19eef205e4e7a.

Implement SkSerialProcs for pictures

Bug: skia:
Change-Id: Icde2d912941a19999e204ac5213f519ed5387e12
Reviewed-on: https://skia-review.googlesource.com/84480
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
9 files changed