Fix for thin filled and hairline roundrects.

The roundrect renderer was dropping into the
ConvexPathRenderer when it didn't need to -- if a stroke is
just on the edge of being acceptable it will now use the
roundrect renderer.

BUG=Skia:1802
R=robertphillips@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/59903005

git-svn-id: http://skia.googlecode.com/svn/trunk@12168 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed