MD History: Add basic material design history cards and history items

ui/webui/resources/js/cr/ui/position_util.js

 // Copyright (c) 2012 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 This file provides utility functions for position popups.
  */
 
 cr.exportPath('cr.ui');
 
@@ skipping 208 matching lines @@
     var anchorRect = anchorElement.getBoundingClientRect();
     positionPopupAroundRect(anchorRect, popupElement, type,
                             !!opt_invertLeftRight);
   }
 
   /**
    * Positions a popup around a point.
    * @param {number} x The client x position.
    * @param {number} y The client y position.
    * @param {!HTMLElement} popupElement The popup element we are positioning.
+   * @param {cr.ui.AnchorType} opt_anchorType The type of anchoring we want.

[tsergeant, 2016/01/29 03:27:19]

You'll need to mark this as optional for this to closure compile correctly
(other projects use the 3 argument version and will fail to compile otherwise):

{cr.ui.AnchorType=}

[yingran, 2016/01/29 04:17:52]

Done.

    */
-  function positionPopupAtPoint(x, y, popupElement) {
+  function positionPopupAtPoint(x, y, popupElement, opt_anchorType) {
     var rect = {
       left: x,
       top: y,
       width: 0,
       height: 0,
       right: x,
       bottom: y
     };
-    positionPopupAroundRect(rect, popupElement, AnchorType.BELOW);
+
+    var anchorType = opt_anchorType || AnchorType.BELOW;
+    positionPopupAroundRect(rect, popupElement, anchorType);
   }
 
   // Export
   return {
     positionPopupAroundElement: positionPopupAroundElement,
     positionPopupAtPoint: positionPopupAtPoint
   };
 });