Remove unused PwCollection

Remove unused PwCollection

This class was created to help send results to UrlManager listeners,
but the structure that is currently used lives in native.

BUG=636490
Review-Url: https://codereview.chromium.org/2738813002
Cr-Commit-Position: refs/heads/master@{#456864}
Committed: https://chromium.googlesource.com/chromium/src/+/d028bb17b6b7fd22c69e1a788a0e8c0dbc57ca30

[cco3, 2017-03-07 20:42:55]

cco3@chromium.org changed reviewers:
+ mattreynolds@chromium.org

[mattreynolds, 2017-03-07 20:47:13]

lgtm

[cco3, 2017-03-07 20:47:51]

cco3@chromium.org changed reviewers:
+ nyquist@chromium.org

[cco3, 2017-03-07 20:47:51]

Hi Tommy.  This is another quick cleanup change.

[nyquist, 2017-03-14 20:10:17]

lgtm. is there a bug that this cleanup should be attached to?

[cco3, 2017-03-14 20:57:31]

Description was changed from

==========
Remove unused PwCollection

This class was created to help send results to UrlManager listeners,
but the structure that is currently used lives in native.
==========

to

==========
Remove unused PwCollection

This class was created to help send results to UrlManager listeners,
but the structure that is currently used lives in native.

BUG=636490
==========

[cco3, 2017-03-14 20:57:34]

The CQ bit was checked by cco3@chromium.org

[cco3, 2017-03-14 20:57:35]

The patchset sent to the CQ was uploaded after l-g-t-m from
nyquist@chromium.org, mattreynolds@chromium.org
Link to the patchset: https://codereview.chromium.org/2738813002/#ps20001
(title: "Update bug number")

[commit-bot: I haz the power, 2017-03-14 20:59:12]

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, 2017-03-14 22:23:54]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1489525054970190,
"parent_rev": "bdf4447c2b53c291b12eed74bad3bc0aa3c63eff", "commit_rev":
"d028bb17b6b7fd22c69e1a788a0e8c0dbc57ca30"}

[commit-bot: I haz the power, 2017-03-14 22:24:36]

Description was changed from

==========
Remove unused PwCollection

This class was created to help send results to UrlManager listeners,
but the structure that is currently used lives in native.

BUG=636490
==========

to

==========
Remove unused PwCollection

This class was created to help send results to UrlManager listeners,
but the structure that is currently used lives in native.

BUG=636490

Review-Url: https://codereview.chromium.org/2738813002
Cr-Commit-Position: refs/heads/master@{#456864}
Committed:
https://chromium.googlesource.com/chromium/src/+/d028bb17b6b7fd22c69e1a788a0e...
==========

[commit-bot: I haz the power, 2017-03-14 22:24:37]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/d028bb17b6b7fd22c69e1a788a0e...