Use point to line distance instead of area for colinear check

Bug: chromium:1018218
Change-Id: I9a33332a06a63075dd016f038d5cd4ede59f9a5d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252042
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1 file changed