DevTools: remove setScriptFile from UISourceCode.

Source/devtools/front_end/SourceMapping.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 51 matching lines @@
  */
 WebInspector.ScriptSourceMapping = function()
 {
 }
 
 WebInspector.ScriptSourceMapping.prototype = {
     /**
      * @param {!WebInspector.Script} script
      */
     addScript: function(script) { }
-}
+}