// now with session specified
evt1 = SpeedTracerLogger.start(session2, DevModeEventType.JAVA_TO_JS_CALL, "k1", "v1");
// also test that child events aren't posted (only top-level events)
evt2 = SpeedTracerLogger.start(DevModeEventType.CREATE_UI);
evt2.end();
evt1.end();
// expect only first event
expectedEvents.add(new DevModeEvent(evt1));
expectedSessions.add(session2);
evt1 = SpeedTracerLogger.start(session1, DevModeEventType.JS_TO_JAVA_CALL, "k1", "v1");