Fix error revealed by Android unit test

The issue is/was that the original Picture/PictureRecorder that is being partially replayed is not guaranteed to issue any more commands before attempting to modify the existing data. Such modification is prohibited if there is a extant copy-on-write snapshot. Rather then further complicate the SkWriter32::snapshot capability for a dis-preferred use case, this CL simply copies the operation data.

R=scroggo@google.com, reed@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/316063005
5 files changed