MD Settings: Make PolicyControllable behavior for isPolicyControlled()

chrome/browser/resources/settings/policy_controllable/policy_controllable.js

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @fileoverview Behavior to determine whether a pref is controlled by policy.
+ */
+
+/** @polymerBehavior */
+var PolicyControllable = {
+  /**
+   * @param {?chrome.settingsPrivate.PrefObject} pref
+   * @return {boolean} True if the pref is controlled by an enforced policy.
+   */
+  isPolicyControlled: function(pref) {
+    return !!pref &&
+            pref.policyEnforcement ==
+                chrome.settingsPrivate.PolicyEnforcement.ENFORCED;
+  },
+};