Fixing the flakiness of the serialization tests by assuring that serialization is run before every deserialization test.
Review URL: http://codereview.chromium.org/19541

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1214 ce2b1a6d-e550-0410-aec6-3dcde31c8c00