[M54 merge][extension bindings] Remove leak of internal class

[M54 merge][extension bindings] Remove leak of internal class

BUG=660678
Review-Url: https://codereview.chromium.org/2474623002
Cr-Commit-Position: refs/heads/master@{#429482}
(cherry picked from commit 0d9edd7b2524090fb0a0461e7bd9e5caa1e8a36d)

Committed: https://chromium.googlesource.com/chromium/src/+/15c15fc6d0703dcf6eef798b409164db183c05a8

[awhalley, 2016-11-08 00:33:24]

The CQ bit was checked by awhalley@chromium.org

[commit-bot: I haz the power, 2016-11-08 00:34:02]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-08 00:34:03]

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

[commit-bot: I haz the power, 2016-11-08 00:34:04]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[awhalley, 2016-11-08 00:35:21]

Description was changed from

==========
[M54 merge][extension bindings] Remove leak of internal class

BUG=660678

Review-Url: https://codereview.chromium.org/2474623002
Cr-Commit-Position: refs/heads/master@{#429482}
(cherry picked from commit 0d9edd7b2524090fb0a0461e7bd9e5caa1e8a36d)
==========

to

==========
[M54 merge][extension bindings] Remove leak of internal class

BUG=660678

Review-Url: https://codereview.chromium.org/2474623002
Cr-Commit-Position: refs/heads/master@{#429482}
(cherry picked from commit 0d9edd7b2524090fb0a0461e7bd9e5caa1e8a36d)

Committed:
https://chromium.googlesource.com/chromium/src/+/15c15fc6d0703dcf6eef798b4091...
==========

[awhalley, 2016-11-08 00:35:22]

Committed patchset #1 (id:1) manually as
15c15fc6d0703dcf6eef798b409164db183c05a8.