Delete from non-array end by trimming the backing store

Delete from non-array end by trimming the backing store

Committed: https://crrev.com/44dcc0a2c02e65de68e67d3982639ffd95bcd7fb
Cr-Commit-Position: refs/heads/master@{#29521}

[Toon Verwaest, 2015-07-07 11:25:38]

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

[Toon Verwaest, 2015-07-07 11:25:39]

ptal

[Igor Sheludko, 2015-07-07 13:48:00]

lgtm

[Toon Verwaest, 2015-07-07 14:26:41]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-07-07 14:26:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1218663009/1

[commit-bot: I haz the power, 2015-07-07 15:07:13]

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

[commit-bot: I haz the power, 2015-07-07 15:07:14]

Try jobs failed on following builders:
  v8_linux_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_rel/builds/7376)

[Igor Sheludko, 2015-07-07 15:38:03]

lgtm

[Toon Verwaest, 2015-07-07 15:44:11]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-07-07 15:44:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1218663009/40001

[commit-bot: I haz the power, 2015-07-07 16:02:35]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-07-07 16:02:49]

Patchset 3 (id:??) landed as
https://crrev.com/44dcc0a2c02e65de68e67d3982639ffd95bcd7fb
Cr-Commit-Position: refs/heads/master@{#29521}