DevTools: Turn *Model events into symbols

third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.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
  * @extends {WebInspector.Object}
  */
@@ skipping 244 matching lines @@
         }
         var copy = this._observersForTarget(target);
         for (var i = 0; i < copy.length; ++i)
             copy[i].targetAdded(target);
 
         for (var pair of this._modelListeners) {
             var listeners = pair[1];
             for (var i = 0; i < listeners.length; ++i) {
                 var model = target.model(listeners[i].modelClass);
                 if (model)
-                    model.addEventListener(pair[0], listeners[i].listener, listeners[i].thisObject);
+                    model.addEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
             }
         }
 
         /**
          * @param {!WebInspector.ResourceTreeModel.Events} sourceEvent
          * @param {!WebInspector.TargetManager.Events} targetEvent
          * @return {!WebInspector.EventTarget.EventDescriptor}
          * @this {WebInspector.TargetManager}
          */
         function setupRedispatch(sourceEvent, targetEvent)
@@ skipping 15 matching lines @@
 
         var copy = this._observersForTarget(target);
         for (var i = 0; i < copy.length; ++i)
             copy[i].targetRemoved(target);
 
         for (var pair of this._modelListeners) {
             var listeners = pair[1];
             for (var i = 0; i < listeners.length; ++i) {
                 var model = target.model(listeners[i].modelClass);
                 if (model)
-                    model.removeEventListener(pair[0], listeners[i].listener, listeners[i].thisObject);
+                    model.removeEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
             }
         }
     },
 
     /**
      * @param {number=} capabilitiesMask
      * @return {!Array.<!WebInspector.Target>}
      */
     targets: function(capabilitiesMask)
     {
@@ skipping 64 matching lines @@
     /**
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target) { },
 }
 
 /**
  * @type {!WebInspector.TargetManager}
  */
 WebInspector.targetManager = new WebInspector.TargetManager();