This change makes SkImageFilter and SkBlurImageFilter flattenable/unflattenable.

The imageblur test also needed to stop calling getDeviceSize(), since it was
 returning 99999x99999 for the  SkPicture case.



git-svn-id: http://skia.googlecode.com/svn/trunk@2699 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed