[inspector] Refactor protocol-test.js

test/inspector/debugger/get-possible-breakpoints-lazy-error.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.
 
-InspectorTest.log('getPossibleBreakpoints should not crash during lazy compilation (crbug.com/715334)');
+let {session, contextGroup, Protocol} = InspectorTest.start('getPossibleBreakpoints should not crash during lazy compilation (crbug.com/715334)');
 
-InspectorTest.addScript(`
+contextGroup.addScript(`
 function test() { continue; }
 //# sourceURL=test.js`);
 
 (async function test() {
   Protocol.Debugger.enable();
   let script = await Protocol.Debugger.onceScriptParsed();
   InspectorTest.logMessage(script);
   let scriptId = script.params.scriptId;
   Protocol.Debugger.onScriptFailedToParse(msg => {
     InspectorTest.logMessage(msg);
     if (msg.params.scriptId !== script.params.scriptId) {
       InspectorTest.log('Failed script to parse event has different scriptId');
     } else {
       InspectorTest.log('One script is reported twice');
     }
   });
   let response = await Protocol.Debugger.getPossibleBreakpoints({
     start: {scriptId, lineNumber: 0, columnNumber: 0}});
   InspectorTest.logMessage(response);
   InspectorTest.completeTest();
 })();