Remove unused IdempotentPointerToHandleCodeTrampoline

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/59973006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17504 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Use loop to initialize locals when optimizing for size.

Port r17465 (9f3f3d1)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/59853002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17505 ce2b1a6d-e550-0410-aec6-3dcde31c8c00