[DevTools] Replace ViewportControl with ListControl.

third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
@@ skipping 980 matching lines @@
  * @param {!Element} element
  * @param {?Element=} containerElement
  * @return {!Size}
  */
 UI.measurePreferredSize = function(element, containerElement) {
   var oldParent = element.parentElement;
   var oldNextSibling = element.nextSibling;
   containerElement = containerElement || element.ownerDocument.body;
   containerElement.appendChild(element);
   element.positionAt(0, 0);
-  var result = new Size(element.offsetWidth, element.offsetHeight);
+  var result = element.getBoundingClientRect();
 
   element.positionAt(undefined, undefined);
   if (oldParent)
     oldParent.insertBefore(element, oldNextSibling);
   else
     element.remove();
-  return result;
+  return new Size(result.width, result.height);
 };
 
 /**
  * @unrestricted
  */
 UI.InvokeOnceHandlers = class {
   /**
    * @param {boolean} autoInvoke
    */
   constructor(autoInvoke) {
@@ skipping 969 matching lines @@
   return new Promise(fulfill => {
     var image = new Image();
     image.addEventListener('load', () => fulfill(image));
     image.addEventListener('error', () => fulfill(null));
     image.src = url;
   });
 };
 
 /** @type {!UI.ThemeSupport} */
 UI.themeSupport;