[inspector] added reconnect method for tests

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.
 
-print("Tests that Runtime.evaluate will generate correct previews.");
+InspectorTest.log("Tests that Runtime.evaluate will generate correct previews.");
 
 InspectorTest.addScript(
 `
 var f1 = function(){};
 
 Object.prototype[0] = 'default-first';
 var obj = {p1: {a:1}, p2: {b:'foo'}, p3: f1};
 Object.defineProperties(obj, {
   p4: {
     get() { return 2 }
@@ skipping 51 matching lines @@
         .then(next);
   },
 
   function testInheritingArrayPropertiesPreview(next)
   {
     Protocol.Runtime.evaluate({ "expression": "inheritingArr", "generatePreview": true })
         .then(result => InspectorTest.logMessage(result.result.result.preview))
         .then(next);
   }
 ]);