SkCanvas::adjustToTopLayer()

Given a matrix and a clip bounds, offsets them to reflect the difference
between device coordinates and global coordinates. Useful when a client
wants an OS-specific backing for a canvas.

R=reed@google.com
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1986383002

Review-Url: https://codereview.chromium.org/1986383002
3 files changed