Adapt test expectations to recent V8 conformance fix.

R=machenbach@chromium.org
BUG=377476,v8:3333

Review URL: https://codereview.chromium.org/298133004

git-svn-id: svn://svn.chromium.org/blink/trunk@174814 bbb929c8-8fbe-4397-9dbb-9b2b20218538