Add local protection setting to chrome://settings/system

chrome/browser/resources/settings/system_page/system_page.js

 // Copyright 2016 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 Settings that affect how Chrome interacts with the underlying
  * operating system (i.e. network, background processes, hardware).
  */
 
 Polymer({
   is: 'settings-system-page',
 
   properties: {
     prefs: {
       type: Object,
       notify: true,
     },
 
     /** @private */
     isProxyEnforcedByPolicy_: {
       type: Boolean,
       computed: 'computeIsProxyEnforcedByPolicy_(prefs.proxy.*)',
     },
+
+    hideProtection_: {
+      type: Boolean,
+      value: true,
+    },
+
+    /** @private {chrome.settingsPrivate.PrefObject} */
+    protectionPref_: {
+      type: Object,
+    }
+  },
+
+  /** @override */
+  ready: function() {
+    this.proxy_ = settings.SystemPageBrowserProxyImpl.getInstance();
+
+    this.hideProtection_ = this.proxy_.hideProtectionSetting();
+
+    this.protectionPref_ = {
+      key: '',
+      type: chrome.settingsPrivate.PrefType.BOOLEAN,
+      value: this.proxy_.protectionSetting(),
+    };
+  },
+
+  onProtectionChange_: function() {
+    var enabled = this.$.protectionControl.checked;
+    this.proxy_.setProtectionSetting(enabled);
   },
 
   /**
    * @return {boolean}
    * @private
    */
   computeIsProxyEnforcedByPolicy_: function() {
     var pref = this.get('prefs.proxy');
     // TODO(dbeam): do types of policy other than USER apply on ChromeOS?
     return pref.enforcement == chrome.settingsPrivate.Enforcement.ENFORCED &&
@@ skipping 25 matching lines @@
   /**
    * @param {boolean} enabled Whether hardware acceleration is currently
    *     enabled.
    * @private
    */
   shouldShowRestart_: function(enabled) {
     var proxy = settings.SystemPageBrowserProxyImpl.getInstance();
     return enabled != proxy.wasHardwareAccelerationEnabledAtStartup();
   },
 });