Fix for osx Lanzcos scale test.
Fix for osx Lanzcos scale test.

Apparently it's off by like 1 bit. 


git-svn-id: http://src.chromium.org/svn/trunk/src@24337 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 173d0d39a850c1cdfe3cbfc4de19cda23cb8edce
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser