Fix for-in for large indexes and indexes on proxies

Fix for-in for large indexes and indexes on proxies
BUG=v8:4130
LOG=n

Committed: https://crrev.com/de23dd280980bc2ae3e8f9a5a490e65e46cfc15b
Cr-Commit-Position: refs/heads/master@{#28526}

[Toon Verwaest, 2015-05-20 15:00:40]

verwaest@chromium.org changed reviewers:
+ jkummerow@chromium.org

[Toon Verwaest, 2015-05-20 15:00:41]

PTAL

[Jakob Kummerow, 2015-05-20 15:17:16]

lgtm

[Toon Verwaest, 2015-05-20 15:21:09]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-05-20 15:21:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148863002/1

[commit-bot: I haz the power, 2015-05-20 15:45:49]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-05-20 15:45:50]

Try jobs failed on following builders:
  v8_linux_gcc_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_gcc_compile_rel/bu...)

[Toon Verwaest, 2015-05-20 16:22:34]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2015-05-20 16:22:35]

The patchset sent to the CQ was uploaded after l-g-t-m from
jkummerow@chromium.org
Link to the patchset: https://codereview.chromium.org/1148863002/#ps40001
(title: " ")

[commit-bot: I haz the power, 2015-05-20 16:22:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148863002/40001

[commit-bot: I haz the power, 2015-05-20 17:03:30]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-20 17:03:44]

Patchset 3 (id:??) landed as
https://crrev.com/de23dd280980bc2ae3e8f9a5a490e65e46cfc15b
Cr-Commit-Position: refs/heads/master@{#28526}