GitLab

This CL does the following:
* Moves chrome://network resources into their own directory
* Separates 'requestNetworkInfo' into two separate methods:
** NetworkUI.getNetworkLog
** networkConfig.getNetworks
* Moves networkConfig methods into their own module
** networkConfig emulates a subset of the chrome.networkingPrivate extension API
** This module will later also be used by the internet options JS code

BUG=366365
For c/b/browser_resources.grd:

R=armansito@chromium.org, pneubeck@chromium.org, xiyuan@chromium.org
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/260083007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273007 0039d316-1c4b-4281-b951-d872f2087c98