Added the framework for having canvas/recorder/picture record depth_set's.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2127233002

Committed: https://skia.googlesource.com/skia/+/6d3fb898d5f73a82e36f11c712a633c3921ed518
Review-Url: https://codereview.chromium.org/2127233002
15 files changed