Add test suppressions for cross-fade-background-image.html et al.

TBR=timloh@chromium.org,yosin
BUG=432566

Review URL: https://codereview.chromium.org/718093003

git-svn-id: svn://svn.chromium.org/blink/trunk@185223 bbb929c8-8fbe-4397-9dbb-9b2b20218538