[DevTools] Explicitly require ResourceTreeModel

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 143 matching lines @@
         this._preserveLog = preserveLog;
     },
 
     /**
      * @override
      * @param {!WebInspector.Target} target
      */
     targetAdded: function(target)
     {
         if (!target.parentTarget()) {
-            target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
-            target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.Load, this._loadEventFired, this);
-            target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.DOMContentLoaded, this._domContentLoadedEventFired, this);
+            var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+            if (resourceTreeModel) {
+                resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
+                resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.Load, this._loadEventFired, this);
+                resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.DOMContentLoaded, this._domContentLoadedEventFired, this);
+            }
         }
         var networkLog = WebInspector.NetworkLog.fromTarget(target);
         if (networkLog)
             networkLog.requests().forEach(this._appendRequest.bind(this));
     },
 
     /**
      * @override
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target)
     {
         if (!target.parentTarget()) {
-            target.resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
-            target.resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.Load, this._loadEventFired, this);
-            target.resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.DOMContentLoaded, this._domContentLoadedEventFired, this);
+            var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+            if (resourceTreeModel) {
+                resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
+                resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.Load, this._loadEventFired, this);
+                resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.DOMContentLoaded, this._domContentLoadedEventFired, this);
+            }
         }
     },
 
     /**
      * @param {number} start
      * @param {number} end
      */
     setWindow: function(start, end)
     {
         if (!start && !end) {
@@ skipping 1539 matching lines @@
         return false;
     return true;
 }
 
 WebInspector.NetworkLogView.EventTypes = {
     RequestSelected: "RequestSelected",
     SearchCountUpdated: "SearchCountUpdated",
     SearchIndexUpdated: "SearchIndexUpdated",
     UpdateRequest: "UpdateRequest"
 };