Don't open the Collected Cookies dialog if the related web contents is null because the tab was alr…

Don't open the Collected Cookies dialog if the related web contents is null because the tab was already closed.

BUG=434569
Committed: https://crrev.com/56de5c361e59b039c7347441da6fb5f5b8ee32ee
Cr-Commit-Position: refs/heads/master@{#329969}

[markusheintz_, 2015-03-17 13:34:10]

markusheintz@chromium.org changed reviewers:
+ msramek@chromium.org

[markusheintz_, 2015-03-17 13:34:35]

Martin could you please review my CL? Thanks

[msramek, 2015-03-17 13:53:17]

On 2015/03/17 13:34:35, markusheintz_ wrote:
> Martin could you please review my CL? Thanks

As discussed offline: maybe this can be integrated into
CollectedCookiesViews::Cancel().

[msramek, 2015-03-17 17:35:48]

As discussed online again: let's not complicate it.

LGTM.

[markusheintz_, 2015-03-17 17:38:42]

markusheintz@chromium.org changed reviewers:
+ wfh@chromium.org

[markusheintz_, 2015-03-17 17:39:18]

On 2015/03/17 17:35:48, msramek wrote:
> As discussed online again: let's not complicate it.
> 
> LGTM.

Hey Will could you review this CL please. Thanks

[Will Harris, 2015-03-21 21:00:01]

lgtm sorry for delay

[Will Harris, 2015-05-03 22:05:18]

can this be committed?

[inferno, 2015-05-14 22:11:36]

The CQ bit was checked by inferno@chromium.org

[commit-bot: I haz the power, 2015-05-14 22:13:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1017683003/1

[commit-bot: I haz the power, 2015-05-14 23:11:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-14 23:13:31]

Patchset 1 (id:??) landed as
https://crrev.com/56de5c361e59b039c7347441da6fb5f5b8ee32ee
Cr-Commit-Position: refs/heads/master@{#329969}