DevTools: fix disposing of main debugger script mappings

third_party/WebKit/Source/devtools/front_end/bindings/DebuggerWorkspaceBinding.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @implements {WebInspector.TargetManager.Observer}
  * @param {!WebInspector.TargetManager} targetManager
  * @param {!WebInspector.Workspace} workspace
  * @param {!WebInspector.NetworkMapping} networkMapping
@@ skipping 367 matching lines @@
     var workspace = debuggerWorkspaceBinding._workspace;
     var networkMapping = debuggerWorkspaceBinding._networkMapping;
 
     this._defaultMapping = new WebInspector.DefaultScriptMapping(debuggerModel, workspace, debuggerWorkspaceBinding);
     this._resourceMapping = new WebInspector.ResourceScriptMapping(debuggerModel, workspace, networkMapping, debuggerWorkspaceBinding);
     this._compilerMapping = new WebInspector.CompilerScriptMapping(debuggerModel, workspace, networkMapping, WebInspector.NetworkProject.forTarget(this._target), debuggerWorkspaceBinding);
 
     /** @type {!Map.<!WebInspector.UISourceCode, !WebInspector.DebuggerSourceMapping>} */
     this._uiSourceCodeToSourceMapping = new Map();
 
-    debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this);
-    debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.FailedToParseScriptSource, this._parsedScriptSource, this);
+    this._eventListeners = [
+        debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this),
+        debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.FailedToParseScriptSource, this._parsedScriptSource, this)
+    ];
 }
 
 WebInspector.DebuggerWorkspaceBinding.TargetData.prototype = {
     /**
      * @param {!WebInspector.Event} event
      */
     _parsedScriptSource: function(event)
     {
         var script = /** @type {!WebInspector.Script} */ (event.data);
         this._defaultMapping.addScript(script);
@@ skipping 46 matching lines @@
     /**
      * @param {!WebInspector.UISourceCode} uiSourceCode
      */
     _uiSourceCodeRemoved: function(uiSourceCode)
     {
         this._uiSourceCodeToSourceMapping.remove(uiSourceCode);
     },
 
     _dispose: function()
     {
+        WebInspector.EventTarget.removeEventListeners(this._eventListeners);
         this._compilerMapping.dispose();
         this._resourceMapping.dispose();
         this._defaultMapping.dispose();
         this._uiSourceCodeToSourceMapping.clear();
     }
 }
 
 /**
  * @constructor
  * @param {!WebInspector.Script} script
@@ skipping 221 matching lines @@
      * @param {number} lineNumber
      * @return {boolean}
      */
     uiLineHasMapping: function(uiSourceCode, lineNumber) { }
 }
 
 /**
  * @type {!WebInspector.DebuggerWorkspaceBinding}
  */
 WebInspector.debuggerWorkspaceBinding;