WebUI: Add cr-policy-pref-indicator tests

chrome/test/data/webui/cr_elements/cr_elements_browsertest.js

Index: chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
diff --git a/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js b/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
index 325928729f17dce876aa7995776bb58f7f6c9ed8..a4f41d7a2cf36c990d69dd0d4201fc32e5d8ab6a 100644
--- a/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
+++ b/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
@@ -174,3 +174,22 @@ CrElementsScrollableBehaviorTest.prototype = {
 TEST_F('CrElementsScrollableBehaviorTest', 'All', function() {
   mocha.run();
 });
+
+function CrElementsPolicyPrefIndicatorTest() {}
+
+CrElementsPolicyPrefIndicatorTest.prototype = {
+  __proto__: CrElementsBrowserTest.prototype,
+
+  /** @override */
+  browsePreload:
+      'chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html',
+
+  /** @override */
+  extraLibraries: CrElementsBrowserTest.prototype.extraLibraries.concat([
+    'cr_policy_pref_indicator_tests.js',
+  ]),
+};
+
+TEST_F('CrElementsPolicyPrefIndicatorTest', 'All', function() {
+  mocha.run();
+});