Fix DrawEdgeAAQuad degenerate issue where 3D points don't correctly project to 2D points.

Bug: chromium:1162942

Change-Id: Idc1dcb725ff9eae651b84de2fe792b188dcd1c1b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354671
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
(cherry picked from commit 7656c4b7e89b4ff00480a6d7a8a19e3fd0e5c86e)
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/361518
Reviewed-by: Brian Salomon <bsalomon@google.com>
4 files changed