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

Index: ui/webui/resources/js/cr/ui/position_util.js
diff --git a/ui/webui/resources/js/cr/ui/position_util.js b/ui/webui/resources/js/cr/ui/position_util.js
index 14b29d92d97b9d3d592255e0787d15c820979376..7f8a6146b13c2cbae705afeedb7d69a5037656d4 100644
--- a/ui/webui/resources/js/cr/ui/position_util.js
+++ b/ui/webui/resources/js/cr/ui/position_util.js
@@ -226,8 +226,9 @@ cr.define('cr.ui', function() {
    * @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,
@@ -236,7 +237,9 @@ cr.define('cr.ui', function() {
       right: x,
       bottom: y
     };
-    positionPopupAroundRect(rect, popupElement, AnchorType.BELOW);
+
+    var anchorType = opt_anchorType || AnchorType.BELOW;
+    positionPopupAroundRect(rect, popupElement, anchorType);
   }
 
   // Export