Add getGlobalPolicy to networkingPrivate API.

chrome/browser/resources/chromeos/network_ui/network_ui.js

Index: chrome/browser/resources/chromeos/network_ui/network_ui.js
diff --git a/chrome/browser/resources/chromeos/network_ui/network_ui.js b/chrome/browser/resources/chromeos/network_ui/network_ui.js
index 7b02ed8dd756530617816c1960ff33e675e67614..7b31697eacdf965501bc8f801c745716f8982248 100644
--- a/chrome/browser/resources/chromeos/network_ui/network_ui.js
+++ b/chrome/browser/resources/chromeos/network_ui/network_ui.js
@@ -314,6 +314,16 @@ var NetworkUI = (function() {
   };
 
   /**
+   * Requests the global policy dictionary and updates the page.
+   */
+  var requestGlobalPolicy = function() {
+    chrome.networkingPrivate.getGlobalPolicy(function(policy) {
+      document.querySelector('#global-policy').textContent =

[Devlin, 2017/01/10 15:25:21]

Why document.querySelector('#foo') instead of $('foo')?

[stevenjb, 2017/01/10 17:49:39]

No particular reason, I just copied from somewhere that used
document.querySelector, and I forgot about $ (which we don't use much in Polymer
code).

[Devlin, 2017/01/10 18:43:06]

AFAIK, we still use $ liberally.  It's also shorter, cleaner, and probably
faster (since we don't have to parse the selector string - we know it's an id
from the get-go).

[stevenjb, 2017/01/10 18:58:29]

I didn't mean to suggest that $ wasn't. We also however use
querySelector('#foo') liberally, so I kind of took this as a nit.

+          JSON.stringify(policy);
+    });
+  };
+
+  /**
    * Sets refresh rate if the interval is found in the url.
    */
   var setRefresh = function() {
@@ -334,6 +344,7 @@ var NetworkUI = (function() {
     $('refresh').onclick = requestNetworks;
     setRefresh();
     requestNetworks();
+    requestGlobalPolicy();
   });
 
   document.addEventListener('custom-item-selected', function(event) {