Fixing the drawing of blurred shodows for hairline paths with software rendering

BUG=http://code.google.com/p/chromium/issues/detail?id=121251
REVIEW=http://codereview.appspot.com/5981053/



git-svn-id: http://skia.googlecode.com/svn/trunk@3592 2bbb7eff-a529-9590-31e7-b0007b416f81
8 files changed