Apply canonicalizations to path GrShapes.

The following canonicalizations of path-backed GrShapes are added:

*convex shapes are stored with even/odd (or inv even/odd) fill.

*filled paths are closed.

*dashed paths ignore inverseness of the fill

This will improve the results of queries about the geometry that will be added in a future change.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2067283003

Review-Url: https://codereview.chromium.org/2067283003
3 files changed