Disable DND tests failing on Win64 build

BUG=244605
R=sky@chromium.org
TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15827010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202741 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed