[inspector] Refactor protocol-test.js

test/inspector/runtime/console-memory.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('Checks console.memory');
+let {session, contextGroup, Protocol} = InspectorTest.start('Checks console.memory');
 
 InspectorTest.runAsyncTestSuite([
   async function testWithoutMemory() {
     InspectorTest.logMessage(
       await Protocol.Runtime.evaluate({expression: 'console.memory'}));
   },
 
   async function testSetterInStrictMode() {
     // crbug.com/468611
     InspectorTest.logMessage(
       await Protocol.Runtime.evaluate({
         expression: '"use strict"\nconsole.memory = {};undefined' }));
   },
 
   async function testWithMemory() {
     utils.setMemoryInfoForTest(239);
     InspectorTest.logMessage(
       await Protocol.Runtime.evaluate({expression: 'console.memory'}));
   },
 
   async function testSetterDoesntOverride() {
     utils.setMemoryInfoForTest(42);
     await Protocol.Runtime.evaluate({expression: 'console.memory = 0'});
     InspectorTest.logMessage(
       await Protocol.Runtime.evaluate({expression: 'console.memory'}));
   }
 ]);