[test/inspector] remove any usage of v8::Extension

test/inspector/runtime/evaluate-with-generate-preview.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 InspectorTest.log("Tests that Runtime.evaluate will generate correct previews.");
 
 InspectorTest.addScript(
 `
 var f1 = function(){};
 
@@ skipping 44 matching lines @@
   mixedSet.add(i);
 }
 
 var deterministicNativeFunction = Math.log;
 var parentObj = {};
 Object.defineProperty(parentObj, 'propNotNamedProto', {
   get: deterministicNativeFunction,
   set: function() {}
 });
 var objInheritsGetterProperty = {__proto__: parentObj};
-allowAccessorFormatting(objInheritsGetterProperty);
+inspector.allowAccessorFormatting(objInheritsGetterProperty);
 `);
 
 InspectorTest.setupInjectedScriptEnvironment();
 
 InspectorTest.runTestSuite([
   function testObjectPropertiesPreview(next)
   {
     Protocol.Runtime.evaluate({ "expression": "obj", "generatePreview": true })
         .then(result => InspectorTest.logMessage(result.result.result.preview))
         .then(next);
@@ skipping 62 matching lines @@
         .then(next);
   },
 
   function testObjWithArrayAsProto(next)
   {
     Protocol.Runtime.evaluate({ "expression": "Object.create([1,2])", "generatePreview": true })
         .then(result => InspectorTest.logMessage(result.result.result.preview))
         .then(next);
   }
 ]);