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

third_party/WebKit/Source/devtools/front_end/main/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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 149 matching lines @@
 
     var canDock = !!Runtime.queryParam('can_dock');
     UI.zoomManager = new UI.ZoomManager(window, InspectorFrontendHost);
     UI.inspectorView = UI.InspectorView.instance();
     UI.ContextMenu.initialize();
     UI.ContextMenu.installHandler(document);
     UI.Tooltip.installHandler(document);
     Components.dockController = new Components.DockController(canDock);
     ConsoleModel.consoleModel = new ConsoleModel.ConsoleModel();
     SDK.multitargetNetworkManager = new SDK.MultitargetNetworkManager();
+    SDK.networkLog = new SDK.NetworkLog();
     SDK.targetManager.addEventListener(
         SDK.TargetManager.Events.SuspendStateChanged, this._onSuspendStateChanged.bind(this));
 
     UI.shortcutsScreen = new UI.ShortcutsScreen();
     // set order of some sections explicitly
     UI.shortcutsScreen.section(Common.UIString('Elements Panel'));
     UI.shortcutsScreen.section(Common.UIString('Styles Pane'));
     UI.shortcutsScreen.section(Common.UIString('Debugger'));
     UI.shortcutsScreen.section(Common.UIString('Console'));
 
@@ skipping 772 matching lines @@
    * @override
    * @return {?Element}
    */
   settingElement() {
     return UI.SettingsUI.createSettingCheckbox(
         Common.UIString('Show rulers'), Common.moduleSetting('showMetricsRulers'));
   }
 };
 
 new Main.Main();