[DevTools] Make NetworkLog a singleton, and not an SDKModel

third_party/WebKit/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 52 matching lines @@
     var results = [];
     var mainResourceURL = target.inspectedURL();
     var categoriesDone = 0;
 
     function categoryDoneCallback() {
       if (++categoriesDone !== categories.length)
         return;
       resultCallback(mainResourceURL, results);
     }
 
-    var networkLog = SDK.NetworkLog.fromTarget(target);
-    var requests = networkLog ? networkLog.requests().slice() : [];
+    var requests = SDK.networkLog.requestsForTarget(target).slice();
     var compositeProgress = new Common.CompositeProgress(this._progress);
     var subprogresses = [];
     for (var i = 0; i < categories.length; ++i)
       subprogresses.push(new Common.ProgressProxy(compositeProgress.createSubProgress(), categoryDoneCallback));
     for (var i = 0; i < categories.length; ++i) {
       if (this._progress.isCanceled()) {
         subprogresses[i].done();
         continue;
       }
       var category = categories[i];
@@ skipping 70 matching lines @@
       var callback = this._pageReloadCallback;
       delete this._pageReloadCallback;
       callback();
     }
   }
 
   clearResults() {
     this._auditsPanel.clearResults();
   }
 };