[inspector] Refactor protocol-test.js

test/inspector/debugger/restore-breakpoint.js

Index: test/inspector/debugger/restore-breakpoint.js
diff --git a/test/inspector/debugger/restore-breakpoint.js b/test/inspector/debugger/restore-breakpoint.js
index 3a10f5378ec0e2184e802c617d3ef1ca64b69758..e0d2b84766e5534565d42af8468cbaaaa071c382 100644
--- a/test/inspector/debugger/restore-breakpoint.js
+++ b/test/inspector/debugger/restore-breakpoint.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-InspectorTest.log('Checks that debugger agent uses source content to restore breakpoints.');
+let {session, contextGroup, Protocol} = InspectorTest.start('Checks that debugger agent uses source content to restore breakpoints.');
 
 Protocol.Debugger.enable();
 InspectorTest.runTestSuite([