[inspector] Make InspectorTest.sendCommand* private

test/inspector/runtime/evaluate-with-context-id-equal-zero.js

Index: test/inspector/runtime/evaluate-with-context-id-equal-zero.js
diff --git a/test/inspector/runtime/evaluate-with-context-id-equal-zero.js b/test/inspector/runtime/evaluate-with-context-id-equal-zero.js
index 7f7b6c7e3bbb1d99406a1fe127355f8be5514a83..8291a67c244cd1d72e0ec7744aecde43b9d59fbb 100644
--- a/test/inspector/runtime/evaluate-with-context-id-equal-zero.js
+++ b/test/inspector/runtime/evaluate-with-context-id-equal-zero.js
@@ -4,11 +4,6 @@
 
 print("Tests that DevTools doesn't crash on Runtime.evaluate with contextId equals 0.");
 
-InspectorTest.sendCommand("Runtime.evaluate", { "contextId": 0, "expression": "" }, evaluateCallback);
-
-function evaluateCallback(result)
-{
-  result.id = 0;
-  InspectorTest.logObject(result);
-  InspectorTest.completeTest();
-}
+Protocol.Runtime.evaluate({ "contextId": 0, "expression": "" })
+  .then(message => InspectorTest.logMessage(message))
+  .then(_ => InspectorTest.completeTest());