WebUI: Add cr-policy-pref-indicator tests

ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js

Index: ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js
diff --git a/ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js b/ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js
index 5367637bc34f7f6f612dfeccde990ef57723920c..dd1df6281d87f145b5aa7d44745f833387cfaf0d 100644
--- a/ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js
+++ b/ui/webui/resources/cr_elements/policy/cr_policy_indicator_behavior.js
@@ -48,11 +48,12 @@ var CrPolicyIndicatorBehavior = {
    * @private
    */
   getPolicyIndicatorIcon: function(type) {
-    var icon = '';
+    var icon;
     switch (type) {
       case CrPolicyIndicatorType.EXTENSION:
       case CrPolicyIndicatorType.NONE:
-        return icon;
+        icon = 'domain';  // Set a valid icon for accessability audit

[Dan Beam, 2017/01/18 01:06:34]

accessibility *

[stevenjb, 2017/01/18 23:13:03]

Done.

+        break;
       case CrPolicyIndicatorType.PRIMARY_USER:
         icon = 'group';
         break;
@@ -71,7 +72,7 @@ var CrPolicyIndicatorBehavior = {
   },
 
   /**
-   * @param {CrPolicyIndicatorType} type
+   * @param {!CrPolicyIndicatorType} type
    * @param {string} name The name associated with the indicator. See
    *     chrome.settingsPrivate.PrefObject.controlledByName
    * @param {boolean=} opt_matches For RECOMMENDED only, whether the indicator