[DevTools] Remove Common.Event.target field.

third_party/WebKit/Source/devtools/front_end/sdk/Script.js

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 271 matching lines @@
     return !!this.sourceURL && !startsAtZero;
   }
 
   /**
    * @param {string} sourceMapURL
    */
   addSourceMapURL(sourceMapURL) {
     if (this.sourceMapURL)
       return;
     this.sourceMapURL = sourceMapURL;
-    this.dispatchEventToListeners(SDK.Script.Events.SourceMapURLAdded, this.sourceMapURL);
+    this.dispatchEventToListeners(SDK.Script.Events.SourceMapURLAdded, this);
   }
 
   /**
    * @return {boolean}
    */
   isAnonymousScript() {
     return !this.sourceURL;
   }
 
   /**
@@ skipping 29 matching lines @@
   }
 };
 
 /** @enum {symbol} */
 SDK.Script.Events = {
   ScriptEdited: Symbol('ScriptEdited'),
   SourceMapURLAdded: Symbol('SourceMapURLAdded')
 };
 
 SDK.Script.sourceURLRegex = /^[\040\t]*\/\/[@#] sourceURL=\s*(\S*?)\s*$/m;