Fixed proxy settings in case of simultaneously active device and user ONC policy.

This fix required the following changes:
- Let Shill emit profile and proxy config changes.
  (see https://gerrit.chromium.org/gerrit/#/c/37935/)
  The active network's changes are automatically picked up by ProxyConfigTracker.

- Make NetworkConfigurationUpdater an observer of the Manager's profile list (by
  implementing the new NetworkLibrary::NetworkProfileObserver class), so that
  the user policy is applied _after_ Shill has pushed the user profile.

- Ensure in the NetworkConfigurationUpdater that the device policy is always
  overwritten by the user policy (if the former is applied, also apply the
  latter).

Apart from that, I cleaned up the code a little bit. E.g. the following members of NetworkLibrary were unused:
- FindRememberedNetworkByUniqueId
- SetNetworkProfile
- remembered_network_unique_id_map_

BUG=157642
TEST=
- Setup both policies for the same SSID with different proxy settings. 
- Check that after login the right proxy is used.
- Toggle AutoConnect of the device policy and reload the policy while still logged in.
- Check that still the right proxy is used.

Review URL: https://chromiumcodereview.appspot.com/11365225

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@168608 0039d316-1c4b-4281-b951-d872f2087c98

0 files changed, 0 insertions, 0 deletions