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

third_party/WebKit/Source/devtools/front_end/network/NetworkLogView.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 382 matching lines @@
     if (!target.parentTarget()) {
       var resourceTreeModel = SDK.ResourceTreeModel.fromTarget(target);
       if (resourceTreeModel) {
         resourceTreeModel.addEventListener(
             SDK.ResourceTreeModel.Events.MainFrameNavigated, this._mainFrameNavigated, this);
         resourceTreeModel.addEventListener(SDK.ResourceTreeModel.Events.Load, this._loadEventFired, this);
         resourceTreeModel.addEventListener(
             SDK.ResourceTreeModel.Events.DOMContentLoaded, this._domContentLoadedEventFired, this);
       }
     }
-    var networkLog = SDK.NetworkLog.fromTarget(target);
-    if (networkLog)
-      networkLog.requests().forEach(this._appendRequest.bind(this));
+    SDK.networkLog.requestsForTarget(target).forEach(this._appendRequest.bind(this));
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetRemoved(target) {
     if (!target.parentTarget()) {
       var resourceTreeModel = SDK.ResourceTreeModel.fromTarget(target);
       if (resourceTreeModel) {
@@ skipping 603 matching lines @@
    */
   _mainFrameNavigated(event) {
     if (!this._recording)
       return;
 
     var frame = /** @type {!SDK.ResourceTreeFrame} */ (event.data);
     var loaderId = frame.loaderId;
 
     // Pick provisional load requests.
     var requestsToPick = [];
-    var networkLog = SDK.NetworkLog.fromTarget(frame.target());
-    var requests = networkLog ? networkLog.requests() : [];
+    var requests = SDK.networkLog.requestsForTarget(frame.target());
     for (var i = 0; i < requests.length; ++i) {
       var request = requests[i];
       if (request.loaderId === loaderId)
         requestsToPick.push(request);
     }
 
     if (!this._preserveLog) {
       this.reset();
       for (var i = 0; i < requestsToPick.length; ++i)
         this._appendRequest(requestsToPick[i]);
@@ skipping 754 matching lines @@
  */
 Network.NetworkGroupLookupInterface = function() {};
 
 Network.NetworkGroupLookupInterface.prototype = {
   /**
    * @param {!SDK.NetworkRequest} request
    * @return {?string}
    */
   lookup(request) {}
 };