Added RefreshPolicies to PolicyService.

chrome/browser/resources/policy.js

Index: chrome/browser/resources/policy.js
diff --git a/chrome/browser/resources/policy.js b/chrome/browser/resources/policy.js
index 5c26d8b08b406c2e8d157b1d5afd87651dbc2ea8..242f67348859377b674b01842419a44fd46c9076 100644
--- a/chrome/browser/resources/policy.js
+++ b/chrome/browser/resources/policy.js
@@ -13,6 +13,10 @@ var policyDataFormat = {
   // False if the policy information is being sent due to an initial page load
   // and true if it is being sent due to a change of policy values.
   'isPolicyUpdate': false,
+
+  // True if a policy fetch that was requested has completed.
+  'isRefreshDone': false,
+
   'policies': [
     {
       'level': 'managed',
@@ -216,12 +220,12 @@ cr.define('policies', function() {
    * by the policyDataFormat.
    */
   Policy.returnData = function(policyData) {
+    if (policyData.isRefreshDone)
+      $('fetch-policies-button').disabled = false;
     if (policyData.isPolicyUpdate) {
       Policy.getInstance().collapseExpandedCells();
       Policy.getInstance().renderTemplate(policyData);
       Policy.getInstance().updatePolicyVisibility();
-
-      $('fetch-policies-button').disabled = false;
     } else {
       Policy.getInstance().renderTemplate(policyData);
     }