Backend for css rule tracking

third_party/WebKit/Source/devtools/front_end/sdk/CSSModel.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 562 matching lines @@
          * @param {!Array<string>=} backgroundColors
          * @return {?Array<string>}
          */
         function backgroundColorsCallback(error, backgroundColors) {
             return !error && backgroundColors ? backgroundColors : null;
         }
         return this._agent.getBackgroundColors(nodeId, backgroundColorsCallback);
     },
 
     /**
+     * @param {boolean} enable
+     */
+    startSelectorRecording: function(enable)
+    {
+        this._agent.setSelectorRecording(enable);
+    },
+
+    /**
+     * @return {!Promise<?Array<?WebInspector.CSSStyleRule>>}
+     */
+    ruleListPromise: function()
+    {
+        /**
+        * @param {?string} error
+        * @param {!Array<!CSSAgent.CSSRule>=} usedCSSRules
+        * @this {WebInspector.CSSModel}
+        * @return {?Array<?WebInspector.CSSStyleRule>}
+        */
+        function usedRulesCallback(error, usedCSSRules)
+        {
+            if (error || !usedCSSRules)
+                return null;
+
+            // Workaround presubmit errors for not using @this in the function
+            var self = this;

[caseq, 2016/10/27 20:59:56]

You no longer need this one, I fixed the jsdoc validator
(https://codereview.chromium.org/2449173002/)

[valih, 2016/10/27 21:41:17]

Done.

+            return usedCSSRules.map(rule => new WebInspector.CSSStyleRule(self, rule, rule.status));
+        }
+        return this._agent.getRuleList(usedRulesCallback.bind(this));
+    },
+
+    /**
      * @param {number} nodeId
      * @return {!Promise.<?Array.<!CSSAgent.PlatformFontUsage>>}
      */
     platformFontsPromise: function(nodeId)
     {
         /**
          * @param {?Protocol.Error} error
          * @param {?Array.<!CSSAgent.PlatformFontUsage>} fonts
          * @return {?Array.<!CSSAgent.PlatformFontUsage>}
          */
@@ skipping 656 matching lines @@
 /**
  * @constructor
  * @param {?WebInspector.CSSStyleDeclaration} inlineStyle
  * @param {?WebInspector.CSSStyleDeclaration} attributesStyle
  */
 WebInspector.CSSModel.InlineStyleResult = function(inlineStyle, attributesStyle)
 {
     this.inlineStyle = inlineStyle;
     this.attributesStyle = attributesStyle;
 };