DevTools: add more jsdocs to NetworkPanel.

Source/devtools/front_end/ui/Popover.js

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 214 matching lines @@
         this.element.style.width = newElementPosition.width + borderWidth * 2 + "px";
         this.element.style.height = newElementPosition.height + borderWidth * 2 + "px";
     },
 
     __proto__: WebInspector.View.prototype
 }
 
 /**
  * @constructor
  * @param {!Element} panelElement
- * @param {function(!Element, !Event):(!Element|!AnchorBox)|undefined} getAnchor
+ * @param {function(!Element, !Event):(!Element|!AnchorBox|undefined)} getAnchor
  * @param {function(!Element, !WebInspector.Popover):undefined} showPopover
  * @param {function()=} onHide
  * @param {boolean=} disableOnClick
  */
 WebInspector.PopoverHelper = function(panelElement, getAnchor, showPopover, onHide, disableOnClick)
 {
     this._panelElement = panelElement;
     this._getAnchor = getAnchor;
     this._showPopover = showPopover;
     this._onHide = onHide;
@@ skipping 143 matching lines @@
             this._resetHoverTimer();
         }
     }
 }
 
 /** @enum {string} */
 WebInspector.Popover.Orientation = {
     Top: "top",
     Bottom: "bottom"
 }