Create an actual hairline path instead of a filled path. Allow metric
and image generation for glyphs to handle hairlines in the event a color
glyph has an outline and a hairline is needed. This also fixes glyph
bounds issues with path based glyphs drawn with hairlines.
Stroke+Fill is not handled very well, but is currently being deprecated
and so given less weight. It works, but is somewhat arbitrary.
Also add more paint overrides to Viewer.
Note that this only adds hairline handling for backup purposes. The code
in SkStrikeSpec::ShouldDrawAsPath which causes most harline glyphs to be
drawn directly from paths is not changed.
Change-Id: Icfadcd818d20b2557e4703c8e99d6d7dd0b4af70
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368156
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
f5cbbc6c15