The accessors should get the value from the holder and not from this.

These are all data properties and if they get invoked it means that
they should just return the value of the property from the holder.

BUG=v8:3461
LOG=Y
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/410923003

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00