the DeltaBlue benchmark to inheritsFrom to avoid name clashes
when running in Chromium with extensions enabled.

See http://crbug.com/11797. 
Review URL: http://codereview.chromium.org/155205

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00