1 Tests asynchronous call stacks for Object.observe().
3 Set timer for test function.
4 Captured call stacks in no particular order:
6 0) observer (async-callstack-object-observe.html:32)
8 0) addProperties (async-callstack-object-observe.html:26)
9 1) timeout2 (async-callstack-object-observe.html:21)
11 0) timeout1 (async-callstack-object-observe.html:16)
13 0) testFunction (async-callstack-object-observe.html:10)