[inspector] Refactor protocol-test.js

test/inspector/debugger/step-out-async-await.js

 // 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): on StepOut and probably StepNext at return position
 // of async generator we should break at next instruction of resumed generator
 // instead of next scheduled microtask.
 
-InspectorTest.log('StepOut from return position of async function.');
+let {session, contextGroup, Protocol} = InspectorTest.start('StepOut from return position of async function.');
 
-InspectorTest.addScript(`
+contextGroup.addScript(`
   async function testFunction() {
     async function foo() {
       var p = Promise.resolve();
       await p;
       p.then(() => 1);
       debugger;
       return p;
     }
     await foo();
   }
 `);
 
-InspectorTest.setupScriptMap();
+session.setupScriptMap();
 Protocol.Debugger.enable();
 InspectorTest.runAsyncTestSuite([
   async function testStepInto() {
     Protocol.Runtime.evaluate({expression: 'testFunction()'});
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.stepInto();
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.stepInto();
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.stepInto();
@@ skipping 26 matching lines @@
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.stepOut();
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.stepOut();
     await logPauseLocation(await Protocol.Debugger.oncePaused());
     Protocol.Debugger.resume();
   },
 ]);
 
 function logPauseLocation(message) {
-  return InspectorTest.logSourceLocation(message.params.callFrames[0].location);
+  return session.logSourceLocation(message.params.callFrames[0].location);
 }