DevTools: do not leak memory through event listeners

third_party/WebKit/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 382 matching lines @@
         var project = this._workspaceProject(frame, isContentScript);
         var uiSourceCode = project.createUISourceCode(url, contentProvider.contentType());
         uiSourceCode[WebInspector.NetworkProject._targetSymbol] = this.target();
         return uiSourceCode;
     },
 
     _dispose: function()
     {
         this._reset();
         WebInspector.EventTarget.removeEventListeners(this._eventListeners);
-        this._eventListeners = [];
         delete this.target()[WebInspector.NetworkProject._networkProjectSymbol];
     },
 
     _reset: function()
     {
         for (var project of this._workspaceProjects.values())
             project.reset();
         this._workspaceProjects.clear();
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }