[inspector] Refactor protocol-test.js

test/inspector/debugger/async-for-await-of-promise-stack.js

Index: test/inspector/debugger/async-for-await-of-promise-stack.js
diff --git a/test/inspector/debugger/async-for-await-of-promise-stack.js b/test/inspector/debugger/async-for-await-of-promise-stack.js
index 2ed886f18e86215f6e64e91562df9bc13b9d844d..6a2f4ce9720f38ae7772d55cf798db916470bd82 100644
--- a/test/inspector/debugger/async-for-await-of-promise-stack.js
+++ b/test/inspector/debugger/async-for-await-of-promise-stack.js
@@ -4,9 +4,9 @@
 
 // Flags: --harmony-async-iteration
 
-InspectorTest.log('Checks that async chains for for-await-of are correct.');
+let {session, contextGroup, Protocol} = InspectorTest.start('Checks that async chains for for-await-of are correct.');
 
-InspectorTest.addScript(`
+contextGroup.addScript(`
 
 function Debugger(value) {
   debugger;
@@ -128,10 +128,10 @@ async function CaughtThrowOnBreak() {
 }
 //# sourceURL=test.js`, 9, 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();
 });