- support fRecord in copy constructor
- support SkDrawPictureCallback
Moved SkDrawPictureCallback to its own header so
SkRecordDraw can include it without pulling in all of
SkPicture.
Adding an SkAutoSaveRestore to SkRecordDraw was the easiest
way to match the balance guarantees of the callback, and
probably not a bad idea in general. Updated its tests.
BUG=skia:
R=robertphillips@google.com
Review URL: https://codereview.chromium.org/349973008
