[inspector] Refactor protocol-test.js

test/inspector/runtime/console-timestamp.js

Index: test/inspector/runtime/console-timestamp.js
diff --git a/test/inspector/runtime/console-timestamp.js b/test/inspector/runtime/console-timestamp.js
index 0dceaed23faa35ae4affefa91025421e40358537..46ee76f925c63bf53d8dd84da46abcad6a20fe57 100644
--- a/test/inspector/runtime/console-timestamp.js
+++ b/test/inspector/runtime/console-timestamp.js
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests timestamps in console');
+
 var messages = [];
 
 function messageAdded(data)