net: Remove glob imports added in #4405
gfx: Remove glob imports added in #4405
auto merge of #4418 : saneyuki/servo/glob_gfx, r=jdm

#4406
auto merge of #4423 : saneyuki/servo/glob_net, r=jdm

#4406
Similar to groove/ridge case, inset/outset would scale the color to
decorate the border. Scale fails when the color is black (i.e. zero),
thus this patch will fix this issue by using a fixed color.
Adding inset ref test.
Adding outset ref test.