MIPS: Pass zone explicitly to zone-allocation on x64 and ARM.

MIPS: Pass zone explicitly to zone-allocation on x64 and ARM.

Port r10857 (87e52e7).

Original commit message:

This is a very mechanical change to reduce the number of calls to
Isolate::Current that come with every plain new-allocation.

BUG=
TEST=

Patch from Daniel Kalmar <kalmard@homejinni.com>;.
Committed: https://code.google.com/p/v8/source/detail?r=10863

[fschneider, 2012-02-29 09:48:15]

LGTM.

I'll fix the indentation and land it.

http://codereview.chromium.org/9511003/diff/1/src/mips/lithium-mips.cc
File src/mips/lithium-mips.cc (right):

http://codereview.chromium.org/9511003/diff/1/src/mips/lithium-mips.cc#newcod...
src/mips/lithium-mips.cc:586: Register::ToAllocationIndex(reg));
Indentation.

http://codereview.chromium.org/9511003/diff/1/src/mips/lithium-mips.cc#newcod...
src/mips/lithium-mips.cc:592: DoubleRegister::ToAllocationIndex(reg));
Indentation.

http://codereview.chromium.org/9511003/diff/1/src/mips/lithium-mips.cc#newcod...
src/mips/lithium-mips.cc:614: LUnallocated::USED_AT_START));
Indentation.