MIPS: Skip write barriers in the fast case when setting up local context.
Port r21481 (5973b48)
Original commit message:
The FastNewContextStub always allocates in new space, so we don't
need to update the write barrier when copying the parameters to
the newly allocated context.
BUG=
R=plind44@gmail.com
Review URL: https://codereview.chromium.org/
302633002
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21500
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00