Add enhanced filters to Network panel.

Source/devtools/front_end/SuggestBox.js

 /*
  * Copyright (C) 2013 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 87 matching lines @@
 
     /**
      * @param {!AnchorBox} anchorBox
      */
     setPosition: function(anchorBox)
     {
         this._updateBoxPosition(anchorBox);
     },
 
     /**
-     * @param {!AnchorBox=} anchorBox
+     * @param {?AnchorBox|undefined} anchorBox
      */
     _updateBoxPosition: function(anchorBox)
     {
         this._anchorBox = anchorBox;
         anchorBox = anchorBox || this._anchorElement.boxInWindow(window);
 
         // Position relative to main DevTools element.
         var container = WebInspector.inspectorView.devtoolsElement();
         anchorBox = anchorBox.relativeToElement(container);
         var totalWidth = container.offsetWidth;
@@ skipping 219 matching lines @@
 
     _rememberRowCountPerViewport: function()
     {
         if (!this.contentElement.firstChild)
             return;
 
         this._rowCountPerViewport = Math.floor(this.containerElement.offsetHeight / this.contentElement.firstChild.offsetHeight);
     },
 
     /**
-     * @param {!AnchorBox} anchorBox
+     * @param {?AnchorBox} anchorBox
      * @param {!Array.<string>} completions
      * @param {number} selectedIndex
      * @param {boolean} canShowForSingleItem
      * @param {string} userEnteredText
      */
     updateSuggestions: function(anchorBox, completions, selectedIndex, canShowForSingleItem, userEnteredText)
     {
         if (this._canShowBox(completions, canShowForSingleItem, userEnteredText)) {
             this._updateItems(completions, selectedIndex, userEnteredText);
             this._updateBoxPosition(anchorBox);
@@ skipping 63 matching lines @@
     enterKeyPressed: function()
     {
         var hasSelectedItem = !!this._selectedElement;
         this.acceptSuggestion();
 
         // Report the event as non-handled if there is no selected item,
         // to commit the input or handle it otherwise.
         return hasSelectedItem;
     }
 }