DevTools: remove setScriptFile from UISourceCode.

Source/devtools/front_end/UISourceCode.js

 /*
  * Copyright (C) 2011 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 202 matching lines @@
     contentType: function()
     {
         return this._contentType;
     },
 
     /**
      * @return {?WebInspector.ScriptFile}
      */
     scriptFile: function()
     {
-        return this._scriptFile;
+        if (this._sourceMapping instanceof WebInspector.SourceMappingWithScriptFile) {
+            var mapping = /** @type {!WebInspector.SourceMappingWithScriptFile} */ (this._sourceMapping);
+            return mapping.scriptFile(this);
+        }
+        return null;
     },
 
     /**
-     * @param {?WebInspector.ScriptFile} scriptFile
-     */
-    setScriptFile: function(scriptFile)
-    {
-        this._scriptFile = scriptFile;
-    },
-
-    /**
      * @return {!WebInspector.Project}
      */
     project: function()
     {
         return this._project;
     },
 
     /**
      * @param {function(?Date, ?number)} callback
      */
@@ skipping 755 matching lines @@
         function persist()
         {
             window.localStorage[key] = this._content;
             window.localStorage["revision-history"] = JSON.stringify(registry);
         }
 
         // Schedule async storage.
         setTimeout(persist.bind(this), 0);
     }
 }