They are objects and the API inheritance hierarchy should reflect that.

R=sgjesse@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/6929008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7772 ce2b1a6d-e550-0410-aec6-3dcde31c8c00