Mojo: Fix mojo/public/cpp/application/DEPS.

Mojo: Fix mojo/public/cpp/application/DEPS.

* We've moved application_runner_chromium.
* None of the header files should include .../cpp/utility (in
  particular, use RunLoop), since the implementations are meant to be
  replaceable (e.g., by a "Chromium" implementation).
* Allow the implementation of ApplicationRunner to use RunLoop. (We
  could allow it for everything in .../cpp/application/lib, but none of
  the other things need RunLoop, hence don't need to be replaced.)

R=jamesr@chromium.org

Committed: https://crrev.com/ed6bbf47c056e285ff5a5077d5d7b4762d9bb002
Cr-Commit-Position: refs/heads/master@{#300421}

[jamesr, 2014-10-21 05:03:17]

lgtm

[viettrungluu, 2014-10-21 05:27:24]

The CQ bit was checked by viettrungluu@chromium.org

[commit-bot: I haz the power, 2014-10-21 05:28:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/665223002/1

[commit-bot: I haz the power, 2014-10-21 05:31:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-21 05:32:24]

Patchset 1 (id:??) landed as
https://crrev.com/ed6bbf47c056e285ff5a5077d5d7b4762d9bb002
Cr-Commit-Position: refs/heads/master@{#300421}