few scanlines (of its bounds) and therefore didn't know to trim its bounds back
down. This can happen when the path's bounds are larger than the curve's bounds
(i.e. the control points are outside of the tight-bounds of the shape.)
git-svn-id: http://skia.googlecode.com/svn/trunk@2534 2bbb7eff-a529-9590-31e7-b0007b416f81