DevTools: [CSS] introduce strong types

Source/devtools/front_end/audits/AuditRules.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 968 matching lines @@
          * @param {!Array.<!DOMAgent.NodeId>=} nodeIds
          */
         function getStyles(nodeIds)
         {
             if (progress.isCanceled()) {
                 callback(null);
                 return;
             }
             var targetResult = {};
 
-            function inlineCallback(inlineStyle, attributesStyle)
+            /**
+             * @param {?WebInspector.CSSStyleModel.InlineStyleResult} inlineStyleResult
+             */
+            function inlineCallback(inlineStyleResult)
             {
-                targetResult.inlineStyle = inlineStyle;
-                targetResult.attributesStyle = attributesStyle;
+                if (!inlineStyleResult)
+                    return;
+                targetResult.inlineStyle = inlineStyleResult.inlineStyle;
+                targetResult.attributesStyle = inlineStyleResult.attributesStyle;
             }
 
-            function matchedCallback(result)
+            /**
+             * @param {?WebInspector.CSSStyleModel.MatchedStyleResult} matchedStyleResult
+             */
+            function matchedCallback(matchedStyleResult)
             {
-                if (result)
-                    targetResult.matchedCSSRules = result.matchedCSSRules;
+                if (matchedStyleResult)
+                    targetResult.matchedCSSRules = matchedStyleResult.matchedCSSRules;
             }
 
             if (!nodeIds || !nodeIds.length)
                 doneCallback();
 
             for (var i = 0; nodeIds && i < nodeIds.length; ++i) {
                 cssModel.getMatchedStylesAsync(nodeIds[i], false, false, matchedCallback);
                 cssModel.getInlineStylesAsync(nodeIds[i], inlineCallback);
                 cssModel.getComputedStyleAsync(nodeIds[i], imageStylesReady.bind(null, nodeIds[i], targetResult, i === nodeIds.length - 1));
             }
@@ skipping 660 matching lines @@
         result.violationCount = badUrls.length;
     },
 
     _collectorCallback: function(matchingResourceData, request, cookie)
     {
         matchingResourceData[request.url] = (matchingResourceData[request.url] || 0) + cookie.size();
     },
 
     __proto__: WebInspector.AuditRules.CookieRuleBase.prototype
 }