MIPS: Eliminate special keyed load string stub in favor of uniform handlers.
Port r24661 (5499efb)
Original commit message:
KeyedLoadIC installs a special case if the receiver is a string.
Although there are several maps for strings, in practice we seem to
be able to treat them individually because a given KeyedLoad site
only sees 1-2 string types.
BUG=
R=paul.lind@imgtec.com
Review URL: https://codereview.chromium.org/
657413002
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24668
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00