[inspector] Refactor protocol-test.js

test/inspector/debugger/async-stack-await.js

Index: test/inspector/debugger/async-stack-await.js
diff --git a/test/inspector/debugger/async-stack-await.js b/test/inspector/debugger/async-stack-await.js
index 155ff4a978f388f2c294e6b4178022c1b472e27c..8f4b16280734fd9f9ec4f9a26574e462e41d0da2 100644
--- a/test/inspector/debugger/async-stack-await.js
+++ b/test/inspector/debugger/async-stack-await.js
@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-InspectorTest.log('Checks that async stacks works for async/await');
+let {session, contextGroup, Protocol} = InspectorTest.start('Checks that async stacks works for async/await');
 
-InspectorTest.addScript(`
+contextGroup.addScript(`
 async function foo1() {
   debugger;
   return Promise.resolve();
@@ -25,10 +25,10 @@ async function test() {
 }
 //# sourceURL=test.js`, 7, 26);
 
-InspectorTest.setupScriptMap();
+session.setupScriptMap();
 Protocol.Debugger.onPaused(message => {
-  InspectorTest.logCallFrames(message.params.callFrames);
-  InspectorTest.logAsyncStackTrace(message.params.asyncStackTrace);
+  session.logCallFrames(message.params.callFrames);
+  session.logAsyncStackTrace(message.params.asyncStackTrace);
   InspectorTest.log('');
   Protocol.Debugger.resume();
 });