DevTools: Track CSSStyleSheetHeaders in the front-end real time

Source/devtools/front_end/SASSSourceMapping.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 58 matching lines @@
     /**
      * @param {WebInspector.Event} event
      */
     _styleSheetChanged: function(event)
     {
         var isAddingRevision = this._isAddingRevision;
         delete this._isAddingRevision;
 
         if (isAddingRevision)
             return;
-        this._cssModel.resourceBinding().requestResourceURLForStyleSheetId(event.data.styleSheetId, callback.bind(this));
-
-        function callback(url)
-        {
-            if (!url)
-                return;
-            this._cssModel.setSourceMapping(url, null);
-        }
+        var url = this._cssModel.resourceBinding().resourceURLForStyleSheetId(event.data.styleSheetId);
+        if (!url)
+            return;
+        this._cssModel.setSourceMapping(url, null);
     },
 
     /**
      * @param {WebInspector.Event} event
      */
     _fileSaveFinished: function(event)
     {
         // FIXME: add support for FileMapping.
         var sassURL = /** @type {string} */ (event.data);
         function callback()
@@ skipping 183 matching lines @@
         return false;
     },
 
     _reset: function()
     {
         this._sourceMapByURL = {};
         this._sourceMapByStyleSheetURL = {};
         this._populate();
     }
 }