MD Settings: Display: Add unified desktop control and modify api

chrome/test/data/webui/settings/fake_system_display.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 Fake implementation of chrome.system.display for testing.
  */
 cr.define('settings', function() {
   /**
    * Fake of the chrome.settings.display API.
@@ skipping 13 matching lines @@
     /**
      * @param {!chrome.system.display.DisplayUnitInfo>} display
      */
     addDisplayForTest: function(display) {
       this.fakeDisplays.push(display);
       this.updateLayouts_();
     },
 
     // SystemDisplay overrides.
     /** @override */
-    getInfo: function(callback) {
+    getInfo: function(flags, callback) {
       setTimeout(function() {
         // Create a shallow copy to trigger Polymer data binding updates.
         var displays;
         if (this.fakeDisplays.length > 0 &&
             this.fakeDisplays[0].mirroringSourceId) {
           // When mirroring is enabled, send only the info for the display
           // being mirrored.
           var display =
               this.getFakeDisplay_(this.fakeDisplays[0].mirroringSourceId);
           assert(!!display);
@@ skipping 85 matching lines @@
           parentId: d.isPrimary ? '' : primaryId,
           position: chrome.system.display.LayoutPosition.RIGHT,
           offset: 0
         });
       }
     }
   };
 
   return {FakeSystemDisplay: FakeSystemDisplay};
 });