[Extensions] Code cleanup

[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None

Committed: https://crrev.com/0a0942f1975a6c8dc8f345fa336f1facbc9d571e
Cr-Commit-Position: refs/heads/master@{#404509}

[Devlin, 2016-07-08 20:31:53]

Description was changed from

==========
[Extensions] Code cleanup

BUG=None
==========

to

==========
[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None
==========

[Devlin, 2016-07-08 20:31:58]

Patchset #1 (id:1) has been deleted

[Devlin, 2016-07-08 20:32:04]

Patchset #1 (id:20001) has been deleted

[Devlin, 2016-07-08 20:32:19]

rdevlin.cronin@chromium.org changed reviewers:
+ lazyboy@chromium.org

[Devlin, 2016-07-08 20:32:20]

Random cleanup time!

[lazyboy, 2016-07-08 20:56:20]

Love this one, thanks! LGTM.

https://codereview.chromium.org/2133203002/diff/40001/extensions/browser/upda...
File extensions/browser/updater/update_service.h (right):

https://codereview.chromium.org/2133203002/diff/40001/extensions/browser/upda...
extensions/browser/updater/update_service.h:51: void StartUpdateCheck(const
std::vector<std::string>& extension_ids);
Oops

[Devlin, 2016-07-08 22:16:54]

The CQ bit was checked by rdevlin.cronin@chromium.org

[commit-bot: I haz the power, 2016-07-08 22:17:21]

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, 2016-07-08 22:22:55]

Description was changed from

==========
[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None
==========

to

==========
[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None
==========

[commit-bot: I haz the power, 2016-07-08 22:22:56]

Committed patchset #1 (id:40001)

[commit-bot: I haz the power, 2016-07-08 22:23:08]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-08 22:24:34]

Description was changed from

==========
[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None
==========

to

==========
[Extensions] Code cleanup

Sprinkle in some const&s and explicit ctors in a few places that jumped
out.

BUG=None

Committed: https://crrev.com/0a0942f1975a6c8dc8f345fa336f1facbc9d571e
Cr-Commit-Position: refs/heads/master@{#404509}
==========

[commit-bot: I haz the power, 2016-07-08 22:24:36]

Patchset 1 (id:??) landed as
https://crrev.com/0a0942f1975a6c8dc8f345fa336f1facbc9d571e
Cr-Commit-Position: refs/heads/master@{#404509}