Adding gms for tileimagefilter and offsetimagefilter

BUG=skia:1684

Review URL: https://codereview.chromium.org/25068002

git-svn-id: http://skia.googlecode.com/svn/trunk@11501 2bbb7eff-a529-9590-31e7-b0007b416f81
44 files changed