[demo-express] Update SessionHistory sample
[demo-express] Update SessionHistory sample

- According to spec: http://www.w3.org/TR/2011/WD-html5-20110113/history.html#history-0
pushState() and replaceState() require two arguments now, so update the test.

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Crosswalk Project for Android 15.43.347
Unit test result summary: Pass 1, Fail 0, Blocked 0

BUG=https://crosswalk-project.org/jira/browse/XWALK-4321

yunxliu/demo-express,axinging/demo-express,zhuyongyong/demo-express,axinging/demo-express,haoxli/demo-express,wanghongjuan/demo-express,kangxu/demo-express,zhuyongyong/demo-express,wanghongjuan/demo-express,zhuyongyong/demo-express,yunxliu/demo-express,wanghongjuan/demo-express,chunywang/demo-express,kangxu/demo-express,haoxli/demo-express,kangxu/demo-express,kangxu/demo-express,yunxliu/demo-express,haoxli/demo-express,chunywang/demo-express,axinging/demo-express,yunxliu/demo-express,zhuyongyong/demo-express,wanghongjuan/demo-express,haoxli/demo-express,axinging/demo-express,chunywang/demo-express,chunywang/demo-express