Revert "Don't ignore degenerates when deciding if a path is convex"

This reverts commit 53cd6c4331a2ef21a7c5eb6166c782cd33178a7b.

Reason for revert: Temporary to limit gold cross-talk with other CLs.

Original change's description:
> Don't ignore degenerates when deciding if a path is convex
> 
> This ensures that a path with a second contour will always be marked
> concave. GrDefaultPathRenderer was incorrectly drawing paths of this type
> (thinking that it could fill them with simple triangulation).
> 
> Bug: skia:7020 skia:1460
> Change-Id: I62bfd72e4c61da427687acf53c552357b57707aa
> Reviewed-on: https://skia-review.googlesource.com/47082
> Reviewed-by: Cary Clark <caryclark@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>

TBR=bsalomon@google.com,brianosman@google.com,caryclark@google.com,reed@google.com

Change-Id: Id7d121633faeb8a43dbd334409408ba51db43d68
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7020 skia:1460
Reviewed-on: https://skia-review.googlesource.com/47343
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed