[inspector] Refactor protocol-test.js

test/inspector/debugger/promise-chain-when-limit-hit.js

Index: test/inspector/debugger/promise-chain-when-limit-hit.js
diff --git a/test/inspector/debugger/promise-chain-when-limit-hit.js b/test/inspector/debugger/promise-chain-when-limit-hit.js
index 6e57adb20496e65632b16b8c94e3475d8bffefb8..072af732c49026225d9b288685dc661127ba5b29 100644
--- a/test/inspector/debugger/promise-chain-when-limit-hit.js
+++ b/test/inspector/debugger/promise-chain-when-limit-hit.js
@@ -1,7 +1,10 @@
 // Copyright 2017 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.
+
 // TODO(kozyatinskiy): fix or remove it later.
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests how async promise chains behave when reaching the limit of stacks');
+
 (async function test(){
   InspectorTest.log('Checks correctness of promise chains when limit hit');
   await Protocol.Runtime.enable();