Implement an SkPicture image filter source. This is required for the external-SVG reference feature of feImage. It simply plays back an SkPicture to a given destination rect.

R=reed@google.com

Review URL: https://codereview.chromium.org/114263002

git-svn-id: http://skia.googlecode.com/svn/trunk@12661 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed