DevTools: [Console] speedup array autocompletion

third_party/WebKit/Source/devtools/front_end/sdk/RuntimeModel.js

 /*
  * Copyright (C) 2012 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 433 matching lines @@
                     object = new Boolean(false);
                 else
                     object = this;
 
                 var resultSet = {};
                 for (var o = object; o; o = o.__proto__) {
                     try {
                         if (type === "array" && o === object && ArrayBuffer.isView(o) && o.length > 9999)
                             continue;
                         var names = Object.getOwnPropertyNames(o);
-                        for (var i = 0; i < names.length; ++i)
+                        var isArray = Array.isArray(o);
+                        for (var i = 0; i < names.length; ++i) {
+                            // Skip array elements indexes.
+                            if (isArray && /^[0-9]/.test(names[i]))
+                                continue;
                             resultSet[names[i]] = true;
+                        }
                     } catch (e) {
                     }
                 }
                 return resultSet;
             }
 
             if (result.type === "object" || result.type === "function")
                 result.callFunctionJSON(getCompletions, [WebInspector.RemoteObject.toCallArgument(result.subtype)], receivedPropertyNames.bind(this));
             else if (result.type === "string" || result.type === "number" || result.type === "boolean")
                 this.evaluate("(" + getCompletions + ")(\"" + result.type + "\")", "completion", false, true, true, false, receivedPropertyNamesFromEval.bind(this));
@@ skipping 215 matching lines @@
     /**
      * @param {string} listenerType
      */
     setListenerType: function(listenerType)
     {
         this._listenerType = listenerType;
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }