Remove the old signature of NotificationManager::closePersistent().

Remove the old signature of NotificationManager::closePersistent().

The origin now is included, and Blink has been updated to pass it in.

This is part of a three-sided patch:
  [1] https://codereview.chromium.org/982313002/
  [2] https://codereview.chromium.org/985063002/
  [3] This patch.

BUG=447628
Committed: https://crrev.com/a31bffe13b2b4abc6d8f93347f4d2d8cca1e7687
Cr-Commit-Position: refs/heads/master@{#320928}

[Peter Beverloo, 2015-03-06 15:53:34]

peter@chromium.org changed reviewers:
+ mkwst@chromium.org

[Peter Beverloo, 2015-03-06 15:53:34]

PTAL :)

[Mike West, 2015-03-06 16:11:50]

lgtm

[Peter Beverloo, 2015-03-17 14:26:10]

The CQ bit was checked by peter@chromium.org

[Peter Beverloo, 2015-03-17 14:26:10]

The patchset sent to the CQ was uploaded after l-g-t-m from mkwst@chromium.org
Link to the patchset: https://codereview.chromium.org/985693004/#ps20001 (title:
"rebase")

[commit-bot: I haz the power, 2015-03-17 14:26:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/985693004/20001

[commit-bot: I haz the power, 2015-03-17 16:09:45]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-17 16:10:42]

Patchset 2 (id:??) landed as
https://crrev.com/a31bffe13b2b4abc6d8f93347f4d2d8cca1e7687
Cr-Commit-Position: refs/heads/master@{#320928}