[inspector] Refactor protocol-test.js

test/inspector/runtime/internal-properties.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 internal properties in Runtime.getProperties output');
+let {session, contextGroup, Protocol} = InspectorTest.start('Checks internal properties in Runtime.getProperties output');
 
-InspectorTest.addScript(`
+contextGroup.addScript(`
 function* foo() {
   yield 1;
 }
 var gen1 = foo();
 var gen2 = foo();
 //# sourceURL=test.js`, 7, 26);
 
 Protocol.Runtime.enable();
 Protocol.Debugger.enable();
 
@@ skipping 43 matching lines @@
 ]);
 
 function checkExpression(expression)
 {
   InspectorTest.log(`expression: ${expression}`);
   return Protocol.Runtime.evaluate({ expression: expression })
     .then(message => Protocol.Runtime.getProperties({ objectId: message.result.result.objectId }))
     .then(message => { delete message.result.result; return message; })
     .then(InspectorTest.logMessage);
 }