DevTools: Get rid of synchronous XHRs in the frontend code

Source/devtools/front_end/sdk/CSSStyleModel.js

 /*
  * Copyright (C) 2010 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 1575 matching lines @@
                 WebInspector.console.error("Failed to get text for stylesheet " + this.id + ": " + error);
                 text = "";
                 // Fall through.
             }
             text = this._trimSourceURL(text);
             callback(text);
         }
     },
 
     /**
+     * @return {!Promise.<string>}
+     */
+    requestContentPromise: function()
+    {
+        return new Promise(requestContent.bind(this));
+
+        /**
+         * @param {function(string)} fulfill
+         * @param {function(*)} reject
+         * @this {WebInspector.CSSStyleSheetHeader}
+         */
+        function requestContent(fulfill, reject)
+        {
+            this.requestContent(callback.bind(null, fulfill));

[pfeldman, 2014/11/10 10:23:25]

this.requestContent(fullfill) ?

+        }
+
+        /**
+         * @param {function(string)} fulfill
+         * @param {string} content
+         */
+        function callback(fulfill, content)
+        {
+            fulfill(content);
+        }
+    },
+
+    /**
      * @override
      */
     searchInContent: function(query, caseSensitive, isRegex, callback)
     {
         function performSearch(content)
         {
             callback(WebInspector.ContentProvider.performSearchInContent(content, query, caseSensitive, isRegex));
         }
 
         // searchInContent should call back later.
@@ skipping 108 matching lines @@
             for (var i = 0; i < callbacks.length; ++i)
                 callbacks[i](computedStyle);
         }
     }
 }
 
 /**
  * @type {!WebInspector.CSSStyleModel}
  */
 WebInspector.cssModel;