Remove operator delete on VS2015 to avoid compiler bug

Remove operator delete on VS2015 to avoid compiler bug

LOG=N
R=jochen@chromium.org
BUG=chromium:440500
Committed: https://crrev.com/961e61b012b28cf521809c01894b81d1282cbc2f
Cr-Commit-Position: refs/heads/master@{#27853}

[scottmg, 2015-04-14 20:12:23]

scottmg@chromium.org changed reviewers:
+ jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-04-15 15:26:29]

lgtm

[scottmg, 2015-04-15 15:57:29]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-04-15 15:57:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1084763002/1

[commit-bot: I haz the power, 2015-04-15 16:05:08]

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

[commit-bot: I haz the power, 2015-04-15 16:05:09]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/2021)

[scottmg, 2015-04-15 16:13:06]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-04-15 16:13:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1084763002/1

[commit-bot: I haz the power, 2015-04-15 16:23:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-15 16:23:46]

Patchset 1 (id:??) landed as
https://crrev.com/961e61b012b28cf521809c01894b81d1282cbc2f
Cr-Commit-Position: refs/heads/master@{#27853}