Allow loading holes from holey smi arrays

Allow loading holes from holey smi arrays

BUG=

Committed: https://crrev.com/eab5bb5390fab79d063f29398377c6d181963dde
Cr-Commit-Position: refs/heads/master@{#28298}

[Toon Verwaest, 2015-05-07 13:02:09]

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

[Toon Verwaest, 2015-05-07 13:02:10]

PTAL

[mvstanton, 2015-05-07 13:05:01]

LGTM.

[Toon Verwaest, 2015-05-07 13:26:14]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2015-05-07 13:26:14]

The patchset sent to the CQ was uploaded after l-g-t-m from
mvstanton@chromium.org
Link to the patchset: https://codereview.chromium.org/1134483002/#ps20001
(title: "Update the DCHECK")

[commit-bot: I haz the power, 2015-05-07 13:26:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134483002/20001

[commit-bot: I haz the power, 2015-05-07 14:02:03]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-07 14:02:17]

Patchset 2 (id:??) landed as
https://crrev.com/eab5bb5390fab79d063f29398377c6d181963dde
Cr-Commit-Position: refs/heads/master@{#28298}

[Toon Verwaest, 2015-05-08 07:28:33]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1131203002/ by verwaest@chromium.org.

The reason for reverting is: Shouldn't unconditionally load holes since it tanks
performance. I'll change it in a follow-up to only do it if the IC ever saw it
happen..