Expose SW accesses in "Cookies set by this page" UI

Expose Service Worker accesses in "Cookies set by this page" UI

Now users can see when SWs are accepted or blocked by
the content settings policy.

BUG=419284
Committed: https://crrev.com/4a22dcef5fca50876226b2128cb4ecf24a0bf12c
Cr-Commit-Position: refs/heads/master@{#327684}

[falken, 2015-04-30 05:03:09]

falken@chromium.org changed reviewers:
+ jochen@chromium.org, nhiroki@chromium.org

[falken, 2015-04-30 05:03:10]

PTAL

[nhiroki, 2015-04-30 05:42:44]

LGTM (please fix compile failures)

[falken, 2015-04-30 05:50:36]

Thanks

On 2015/04/30 05:42:44, nhiroki wrote:
> LGTM (please fix compile failures)

Oops, done.

[jochen (gone - plz use gerrit), 2015-04-30 07:27:55]

lgtm

[falken, 2015-04-30 07:29:55]

The CQ bit was checked by falken@chromium.org

[falken, 2015-04-30 07:29:56]

The patchset sent to the CQ was uploaded after l-g-t-m from nhiroki@chromium.org
Link to the patchset: https://codereview.chromium.org/1110323005/#ps20001
(title: "fix compile")

[commit-bot: I haz the power, 2015-04-30 07:30:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1110323005/20001

[commit-bot: I haz the power, 2015-04-30 08:25:37]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-04-30 08:26:27]

Patchset 2 (id:??) landed as
https://crrev.com/4a22dcef5fca50876226b2128cb4ecf24a0bf12c
Cr-Commit-Position: refs/heads/master@{#327684}