use the supplied matrix instead of the texture w/h div for the bicubic GPU effect

BUG=
R=bsalomon@google.com, caryclark@google.com

Author: humper@google.com

Review URL: https://codereview.chromium.org/37003005

git-svn-id: http://skia.googlecode.com/svn/trunk@11921 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed