DevTools: attempt to unflake http/tests/inspector/service-workers/service-workers-view.html.

Source/devtools/front_end/bindings/NetworkProject.js

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 392 matching lines @@
         var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
         if (debuggerModel) {
             debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this);
             debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.FailedToParseScriptSource, this._parsedScriptSource, this);
         }
         var cssModel = WebInspector.CSSStyleModel.fromTarget(target);
         if (cssModel) {
             cssModel.removeEventListener(WebInspector.CSSStyleModel.Events.StyleSheetAdded, this._styleSheetAdded, this);
             cssModel.removeEventListener(WebInspector.CSSStyleModel.Events.StyleSheetRemoved, this._styleSheetRemoved, this);
         }
+        delete target[WebInspector.NetworkProject._networkProjectSymbol];
     },
 
     _reset: function()
     {
         this._processedURLs = {};
         for (var projectId in this._projectDelegates)
             this._projectDelegates[projectId].reset();
         this._projectDelegates = {};
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }