easy_unlock: When loading the easy-unlock app, make sure it's enabled

easy_unlock: When loading the easy-unlock app, make sure it's enabled

The extension gets disabled when Chrome goes to sleep. If it doesn't
wake up for some reason, the app will stay disabled. To make sure this
doesn't happen, enable the app after loading it (this should be no-op if
the app is already enabled).

TEST=Let a Chromebook battery drain while it's suspended. On next boot the
easy unlock app should be enabled (provided that it was enabled when Chromebook
was suspended).

BUG=410082
Committed: https://crrev.com/0d60628cd8d33316f66330d89b46b77f04baba2e
Cr-Commit-Position: refs/heads/master@{#294980}

[tbarzic, 2014-09-15 21:26:49]

tbarzic@chromium.org changed reviewers:
+ tengs@chromium.org

[Tim Song, 2014-09-15 23:53:06]

lgtm

[Tim Song, 2014-09-15 23:53:53]

https://codereview.chromium.org/564663003/diff/20001/chrome/browser/signin/ea...
File chrome/browser/signin/easy_unlock_service.cc (right):

https://codereview.chromium.org/564663003/diff/20001/chrome/browser/signin/ea...
chrome/browser/signin/easy_unlock_service.cc:7: #include <string>
Why do you need this?

[tbarzic, 2014-09-16 00:05:02]

https://codereview.chromium.org/564663003/diff/20001/chrome/browser/signin/ea...
File chrome/browser/signin/easy_unlock_service.cc (right):

https://codereview.chromium.org/564663003/diff/20001/chrome/browser/signin/ea...
chrome/browser/signin/easy_unlock_service.cc:7: #include <string>
On 2014/09/15 23:53:53, Tim Song wrote:
> Why do you need this?

just fixing error reported by git cl lint (we use string in the file, but don't
include it)

[tbarzic, 2014-09-16 00:40:48]

The CQ bit was checked by tbarzic@chromium.org

[commit-bot: I haz the power, 2014-09-16 00:48:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/564663003/20001

[commit-bot: I haz the power, 2014-09-16 02:18:48]

Committed patchset #2 (id:20001) as a92884c49e5c8846d1faf16348c2fee4648d53e4

[commit-bot: I haz the power, 2014-09-16 02:21:06]

Patchset 2 (id:??) landed as
https://crrev.com/0d60628cd8d33316f66330d89b46b77f04baba2e
Cr-Commit-Position: refs/heads/master@{#294980}