Adds the ability to load JSON log files to about:net-internals.

chrome/browser/resources/net_internals/tabswitcherview.js

 // Copyright (c) 2010 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.
 
 /**
  * TabSwitcher is an implementation of View that handles tab switching.
  *
  *  +-----------------------------------+
  *  | Tab1 / Tab2 / Tab3 / ..           |  <- tab handle view
  *  +-----------------------------------+
@@ skipping 118 matching lines @@
     g_browser.checkForUpdatedInfo();
 };
 
 TabSwitcherView.prototype.getAllTabIds = function() {
   var ids = [];
   for (var i = 0; i < this.tabs_.length; ++i)
     ids.push(this.tabs_[i].id);
   return ids;
 };
 
+// Shows/hides the DOM node that is used to select the tab.  Will not change
+// the active tab.
+TabSwitcherView.prototype.showTabHandleNode = function(id, isVisible) {
+  var tab = this.findTabById(id);
+  setNodeDisplay(tab.getTabHandleNode(), isVisible);
+};
+
 //-----------------------------------------------------------------------------
 
 /**
  * @constructor
  */
 function TabEntry(id, contentView) {
   this.id = id;
   this.contentView = contentView;
 }
 
 TabEntry.prototype.setSelected = function(isSelected) {
   this.active = isSelected;
   changeClassName(this.getTabHandleNode(), 'selected', isSelected);
   this.contentView.show(isSelected);
 };
 
 /**
  * Returns the DOM node that is used to select the tab.
  */
 TabEntry.prototype.getTabHandleNode = function() {
   return document.getElementById(this.id);
 };