[DevTools] Remove Common.Event.target field.

third_party/WebKit/Source/devtools/front_end/console/ConsoleView.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 191 matching lines @@
           this);
       return;
     }
     this._fetchMultitargetMessages();
   }
 
   /**
    * @param {!Common.Event} event
    */
   _onResourceTreeModelLoaded(event) {
-    var resourceTreeModel = event.target;
+    var resourceTreeModel = /** @type {!SDK.ResourceTreeModel} */ (event.data);
     if (resourceTreeModel.target() !== SDK.targetManager.mainTarget())
       return;
     SDK.targetManager.removeModelListener(
         SDK.ResourceTreeModel, SDK.ResourceTreeModel.Events.CachedResourcesLoaded, this._onResourceTreeModelLoaded,
         this);
     this._fetchMultitargetMessages();
   }
 
   _fetchMultitargetMessages() {
     SDK.multitargetConsoleModel.addEventListener(SDK.ConsoleModel.Events.ConsoleCleared, this._consoleCleared, this);
@@ skipping 1113 matching lines @@
         return true;
     }
     return false;
   }
 };
 
 /**
  * @typedef {{messageIndex: number, matchIndex: number}}
  */
 Console.ConsoleView.RegexMatchRange;