[inspector] Refactor protocol-test.js

test/inspector/runtime/await-promise.js

Index: test/inspector/runtime/await-promise.js
diff --git a/test/inspector/runtime/await-promise.js b/test/inspector/runtime/await-promise.js
index a09eb05a4c9c7a035cf6f970d507ea738e833594..042a1332bfea0a77f33b03027cc3ba8b1fb510df 100644
--- a/test/inspector/runtime/await-promise.js
+++ b/test/inspector/runtime/await-promise.js
@@ -3,9 +3,9 @@
 // found in the LICENSE file.
 // Flags: --expose_gc
 
-InspectorTest.log("Tests that Runtime.awaitPromise works.");
+let {session, contextGroup, Protocol} = InspectorTest.start("Tests that Runtime.awaitPromise works.");
 
-InspectorTest.addScript(
+contextGroup.addScript(
 `
 var resolveCallback;
 var rejectCallback;