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

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

Index: chrome/browser/resources/settings/system_page/system_page.js
diff --git a/chrome/browser/resources/settings/system_page/system_page.js b/chrome/browser/resources/settings/system_page/system_page.js
index b03f680f092546bcc1153a1eb46a0d0477411d01..812c6decac0318040bb09cd04dd860e90360d8dc 100644
--- a/chrome/browser/resources/settings/system_page/system_page.js
+++ b/chrome/browser/resources/settings/system_page/system_page.js
@@ -21,6 +21,34 @@ Polymer({
       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);
   },
 
   /**