Remove redundant checks for hasOwnProperty being defined

LayoutTests/http/tests/inspector/inspector-test.js

 var initialize_InspectorTest = function() {
 
 var results = [];
 var resultsSynchronized = false;
 
 function consoleOutputHook(messageType)
 {
     InspectorTest.addResult(messageType + ": " + Array.prototype.slice.call(arguments, 1));
 }
 
@@ skipping 171 matching lines @@
 
 InspectorTest.addObject = function(object, customFormatters, prefix, firstLinePrefix)
 {
     prefix = prefix || "";
     firstLinePrefix = firstLinePrefix || prefix;
     InspectorTest.addResult(firstLinePrefix + "{");
     var propertyNames = Object.keys(object);
     propertyNames.sort();
     for (var i = 0; i < propertyNames.length; ++i) {
         var prop = propertyNames[i];
-        if (typeof object.hasOwnProperty === "function" && !object.hasOwnProperty(prop))
+        if (!object.hasOwnProperty(prop))
             continue;
         var prefixWithName = "    " + prefix + prop + " : ";
         var propValue = object[prop];
         if (customFormatters && customFormatters[prop]) {
             var formatterName = customFormatters[prop];
             if (formatterName !== "skip") {
                 var formatter = InspectorTest.formatters[formatterName];
                 InspectorTest.addResult(prefixWithName + formatter(propValue));
             }
         } else
@@ skipping 642 matching lines @@
     evaluateInWebInspector: function(callId, script)
     {
         window.opener.postMessage(["evaluateInWebInspector", callId, script], "*");
     },
 
     display: function() { }
 }
 
 if (!window.testRunner && window.opener)
     window.testRunner = new StandaloneTestRunnerStub();