1. Dart
2. dart:html
3. WorkerPerformance
4. mark method

WorkerPerformance class

1. Properties
2. memory
3. timeOrigin
4. hashCode
5. on
6. runtimeType
7. Methods
8. clearMarks
9. clearMeasures
10. clearResourceTimings
11. getEntries
12. getEntriesByName
13. getEntriesByType
14. mark
15. measure
16. now
17. setResourceTimingBufferSize
18. addEventListener
19. dispatchEvent
20. noSuchMethod
21. removeEventListener
22. toString
23. Operators
24. operator ==

void mark(String markName) native;