Make tests pass with weak closure overapproximation enabled

Make tests pass with weak closure overapproximation enabled

BUG=v8:3862
R=hpayer@chromium.org
LOG=n

Committed: https://crrev.com/fe3544b370198827d2eac10a2ec5e9c2149929cb
Cr-Commit-Position: refs/heads/master@{#27261}

[Hannes Payer (out of office), 2015-03-18 09:32:18]

lgtm, one nit

https://codereview.chromium.org/1014873002/diff/1/src/heap/heap.cc
File src/heap/heap.cc (right):

https://codereview.chromium.org/1014873002/diff/1/src/heap/heap.cc#newcode4588
src/heap/heap.cc:4588: (FLAG_overapproximate_weak_closure &&
The FLAG_overapproximate_weak_closure should guard the whole if statement.

[jochen (gone - plz use gerrit), 2015-03-18 09:36:57]

The CQ bit was checked by jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-03-18 09:36:57]

The patchset sent to the CQ was uploaded after l-g-t-m from hpayer@chromium.org
Link to the patchset: https://codereview.chromium.org/1014873002/#ps20001
(title: "updates")

[commit-bot: I haz the power, 2015-03-18 09:37:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1014873002/20001

[commit-bot: I haz the power, 2015-03-18 10:01:28]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-18 10:01:46]

Patchset 2 (id:??) landed as
https://crrev.com/fe3544b370198827d2eac10a2ec5e9c2149929cb
Cr-Commit-Position: refs/heads/master@{#27261}