DevTools: Track CSSStyleSheetHeaders in the front-end real time

Source/devtools/front_end/StylesSidebarPane.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1188 matching lines @@
         if (!this.rule)
             return document.createTextNode("");
 
         var origin = "";
         if (this.rule.isUserAgent)
             return document.createTextNode(WebInspector.UIString("user agent stylesheet"));
         if (this.rule.isUser)
             return document.createTextNode(WebInspector.UIString("user stylesheet"));
         if (this.rule.isViaInspector) {
             var element = document.createElement("span");
-            /**
-             * @param {?WebInspector.Resource} resource
-             */
-            function callback(resource)
-            {
-                if (resource)
-                    element.appendChild(linkifyUncopyable(resource.url, this.rule.sourceLine));
-                else
-                    element.textContent = WebInspector.UIString("via inspector");
-            }
-            WebInspector.cssModel.getViaInspectorResourceForRule(this.rule, callback.bind(this));
+            var resource = WebInspector.cssModel.viaInspectorResourceForRule(this.rule);
+            if (resource)
+                element.appendChild(linkifyUncopyable(resource.url, this.rule.sourceLine));
+            else
+                element.textContent = WebInspector.UIString("via inspector");
             return element;
         }
     },
 
     _handleEmptySpaceMouseDown: function(event)
     {
         this._willCauseCancelEditing = this._parentPane._isEditingStyle;
     },
 
     _handleEmptySpaceClick: function(event)
@@ skipping 1503 matching lines @@
         if (!prefix && !force)
             return;
 
         var results = this._cssCompletions.startsWith(prefix);
         var selectedIndex = this._cssCompletions.mostUsedOf(results);
         completionsReadyCallback(results, selectedIndex);
     },
 
     __proto__: WebInspector.TextPrompt.prototype
 }