Reland "Reland "Use conics with w=Inf to describe triangles for the tessellator""

This is a reland of ff515df5b4549673b4c7f04e41c62f2bd1d4ddc3

Original change's description:
> Reland "Use conics with w=Inf to describe triangles for the tessellator"
>
> This is a reland of 84f70136abfb0af3cddf2ec7e8e2405f154916b0
>
> Original change's description:
> > Use conics with w=Inf to describe triangles for the tessellator
> >
> > Previously, only the indirect tessellator could draw triangles, and
> > only with special index data. Using conics with w=Inf will allow us to
> > draw triangles with the hardware tessellator as well, in addition to
> > being able to wean the indirect tessellator off an index buffer.
> >
> > Bug: skia:10419
> > Bug: chromium:1202607
> > Change-Id: I180af9cb5410c0e0bb25a2edcfb01e17d4a2f590
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/406977
> > Commit-Queue: Chris Dalton <csmartdalton@google.com>
> > Reviewed-by: Michael Ludwig <michaelludwig@google.com>
>
> Bug: skia:10419
> Bug: chromium:1202607
> Change-Id: Ic12b10eaa60fddd212c66757bf7100749ee58d49
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408096
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

TBR=robertphillips@google.com

Bug: skia:10419
Bug: chromium:1202607
Change-Id: Id1f8dfa133f446b9f30f2bf8493a3a7b99072e59
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408616
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
5 files changed