Initial steps for moving code onto Map

Initial steps for moving code onto Map

BUG=
R=ishell@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=20736

[Toon Verwaest, 2014-04-14 15:45:07]

PTAL

[Igor Sheludko, 2014-04-14 16:17:52]

lgtm with nits:

https://codereview.chromium.org/237143004/diff/1/src/objects.cc
File src/objects.cc (right):

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4423
src/objects.cc:4423: Isolate* isolate = cache->GetIsolate();
While we are here: lets get isolate only once in this method.

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4461
src/objects.cc:4461: Handle<Map> map(object->map());
While we are here: map(..., isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4474
src/objects.cc:4474: Handle<DescriptorArray> descs(map->instance_descriptors());
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4474
src/objects.cc:4474: Handle<DescriptorArray> descs(map->instance_descriptors());
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4479
src/objects.cc:4479: Handle<Name> key(descs->GetKey(i));
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4487
src/objects.cc:4487: Handle<Name> key(descs->GetKey(i));
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4496
src/objects.cc:4496: Handle<Name> key(descs->GetKey(i));
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4517
src/objects.cc:4517:
isolate->context()->native_context()->normalized_map_cache());
, isolate)

https://codereview.chromium.org/237143004/diff/1/src/objects.cc#newcode4519
src/objects.cc:4519: cache, handle(object->map()), mode);
handle(..., isolate)

[Toon Verwaest, 2014-04-14 16:20:58]

As discussed offline, I don't really want to pollute all our code with ,
isolate, especially when it's not measurable.

I'm going to leave as is.

[Toon Verwaest, 2014-04-14 16:21:47]

Committed patchset #1 manually as r20736 (presubmit successful).