Fixed the skia displacement map effect to match the WebKit displacement map fix. Review URL: https://codereview.chromium.org/12787007 git-svn-id: http://skia.googlecode.com/svn/trunk@8225 2bbb7eff-a529-9590-31e7-b0007b416f81
git-svn-id: http://skia.googlecode.com/svn/trunk@7215 2bbb7eff-a529-9590-31e7-b0007b416f81
TEST=Added new GM called "displacement" Review URL: https://codereview.appspot.com/7058075 git-svn-id: http://skia.googlecode.com/svn/trunk@7182 2bbb7eff-a529-9590-31e7-b0007b416f81