Ignore Windows verylargebitmap GMs for 565 and 8888

BUG=Skia:1822
R=robertphillips@google.com, reed@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/68123010

git-svn-id: http://skia.googlecode.com/svn/trunk@12255 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed