ES6: Implement Object.setPrototypeOf
This reverts commit
bdc89ae76c15f3ef2626f8849744500248aec3ba.
This is a revert of the revert with test/webkit updated as needed.
Original CL Description:
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.setprototypeof
This just exposes the internal %SetPrototype and adds all the required
type checks as specified.
BUG=v8:2675
LOG=Y
R=dslomov@chromium.org, rossberg@chromium.org
Review URL: https://codereview.chromium.org/
144193005
Patch from Erik Arvidsson <arv@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18739
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00