Remove JoinType::kNone from GrStrokeHardwareTessellator

It's easier to just modify the join's control point instead of marking
an enum value. This saves some ifs.

Bug: chromium:1172543
Change-Id: I48a984fd0866e5a7bec2d231118ab00b50328f25
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/372290
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
1 file changed