DevTools: Get rid of synchronous XHRs in the frontend code

Source/devtools/front_end/sdk/CSSStyleModel.js

Index: Source/devtools/front_end/sdk/CSSStyleModel.js
diff --git a/Source/devtools/front_end/sdk/CSSStyleModel.js b/Source/devtools/front_end/sdk/CSSStyleModel.js
index 6b78a184fc044590a3d7b9d6697dac31af0b44cb..09e40b6e4fcfb1ed8a5697165fd5135cd3f7b50e 100644
--- a/Source/devtools/front_end/sdk/CSSStyleModel.js
+++ b/Source/devtools/front_end/sdk/CSSStyleModel.js
@@ -1593,6 +1593,33 @@ WebInspector.CSSStyleSheetHeader.prototype = {
     },
 
     /**
+     * @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)