DevTools: use target-based model accessors only.

Source/devtools/front_end/audits/AuditController.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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.
@@ skipping 60 matching lines @@
          * @this {WebInspector.AuditController}
          */
         function categoryDoneCallback()
         {
             if (++categoriesDone !== categories.length)
                 return;
             this._progress.done();
             resultCallback(mainResourceURL, results);
         }
 
-        var requests = target.networkLog.requests.slice();
+        var requests = target.networkLog.requests().slice();
         var compositeProgress = new WebInspector.CompositeProgress(this._progress);
         var subprogresses = [];
         for (var i = 0; i < categories.length; ++i)
             subprogresses.push(compositeProgress.createSubProgress());
         for (var i = 0; i < categories.length; ++i) {
             var category = categories[i];
             var result = new WebInspector.AuditCategoryResult(category);
             results.push(result);
             category.run(target, requests, ruleResultReadyCallback.bind(this, result), categoryDoneCallback.bind(this), subprogresses[i]);
         }
@@ skipping 63 matching lines @@
             delete this._pageReloadCallback;
             callback();
         }
     },
 
     clearResults: function()
     {
         this._auditsPanel.clearResults();
     }
 }