Use hairline when line width <= 1.0, instead of < 1.0.
This speeds line drawing up considerably when drawing with
default linewidth on canvas.

Review: http://codereview.appspot.com/883047/show



git-svn-id: http://skia.googlecode.com/svn/trunk@538 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed