Remove an unused PassRefPtr ctor

Remove an unused PassRefPtr ctor

A constructor of PassRefPtr makes a reference be convertible to PassRefPtr,
which is not make sense and is not used.

Committed: https://crrev.com/34ee7e000f2a74c7198c6f62b4773c31c942bdbb
Cr-Commit-Position: refs/heads/master@{#414344}

[tzik, 2016-08-25 01:46:59]

The CQ bit was checked by tzik@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-25 01:48:23]

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

[tzik, 2016-08-25 01:50:00]

tzik@chromium.org changed reviewers:
+ yutak@chromium.org

[tzik, 2016-08-25 01:50:01]

PTAL

[Yuta Kitamura, 2016-08-25 05:29:57]

lgtm

[commit-bot: I haz the power, 2016-08-25 06:05:20]

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

[commit-bot: I haz the power, 2016-08-25 06:05:20]

Dry run: This issue passed the CQ dry run.

[tzik, 2016-08-25 06:41:53]

The CQ bit was checked by tzik@chromium.org

[commit-bot: I haz the power, 2016-08-25 06:42:22]

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, 2016-08-25 06:46:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-25 06:48:30]

Description was changed from

==========
Remove an unused PassRefPtr ctor

A constructor of PassRefPtr makes a reference be convertible to PassRefPtr,
which is not make sense and is not used.
==========

to

==========
Remove an unused PassRefPtr ctor

A constructor of PassRefPtr makes a reference be convertible to PassRefPtr,
which is not make sense and is not used.

Committed: https://crrev.com/34ee7e000f2a74c7198c6f62b4773c31c942bdbb
Cr-Commit-Position: refs/heads/master@{#414344}
==========

[commit-bot: I haz the power, 2016-08-25 06:48:30]

Patchset 1 (id:??) landed as
https://crrev.com/34ee7e000f2a74c7198c6f62b4773c31c942bdbb
Cr-Commit-Position: refs/heads/master@{#414344}