Revert "remove approxbytes api from SkPicture"

This reverts commit bfc11853a88cda6951ae97399577fadadf2adcd5.

Bug: skia:
Change-Id: Ied4baad0496a06a52bec6965f9c97e13ebe2ab0a
Reviewed-on: https://skia-review.googlesource.com/89442
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
8 files changed