Occasional assertion in JSNPObject::invalidate() running plugins/object-embed-plugin-scripting.html
https://bugs.webkit.org/show_bug.cgi?id=112518

Mark this test as [ Crash Pass ] in debug.

* platform/mac/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146008 268f45cc-cd09-0410-ab3c-d52691b4dbfc