Remove reporting statistics reporting from chrome://media-internals and fix event logging.

chrome/browser/resources/media_internals/event_list.js

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
 cr.define('media', function() {
   'use strict';
 
   /**
    * This class holds a list of MediaLogEvents.
    * It inherits from <li> and contains a tabular list of said events,
    * the time at which they occurred, and their parameters.
@@ skipping 30 matching lines @@
      */
     addEvent: function(event) {
       var timeInMs = event.time * 1000;  // Work with milliseconds.
       this.startTime_ = this.startTime_ || timeInMs;
       timeInMs -= this.startTime_;
 
       var row = document.createElement('tr');
       row.appendChild(media.makeElement('td', timeInMs.toFixed(1)));
       row.appendChild(media.makeElement('td', event.type));
       var params = [];
-      for (var i = 0; i < event.params.length; ++i) {
-        params.push(i + ': ' + event.params[i]);
+      for (var key in event.params) {
+        params.push(key + ': ' + event.params[key]);
       }
 
       row.appendChild(media.makeElement('td', params.join(', ')));
       this.table_.appendChild(row);
     }
   };
 
   return {
     EventList: EventList
   };
 });