special-case dashing a single line-segment. We can go much faster since we can apply the stroke as we go, eliminating the generic stroker. Review URL: https://codereview.appspot.com/6250070
special-case dashing a single line-segment. We can go much faster since we
can apply the stroke as we go, eliminating the generic stroker.
Review URL: https://codereview.appspot.com/6250070

csulmone/skia,csulmone/skia,csulmone/skia,csulmone/skia