Tests asynchronous call stacks for scripted scroll events.
Set timer for test function.
Captured call stacks in no particular order:
Call stack:
0) onScroll1 (async-callstack-scripted-scroll.js:37)
[scroll]
0) timeout (async-callstack-scripted-scroll.js:29)
[setTimeout]
0) testFunction (async-callstack-scripted-scroll.js:20)
[setTimeout]
0) scheduleTestFunction <omitted>
<... skipped remaining frames ...>
Call stack:
0) onScroll2 (async-callstack-scripted-scroll.js:44)
[scroll]
0) timeout (async-callstack-scripted-scroll.js:29)
[setTimeout]
0) testFunction (async-callstack-scripted-scroll.js:20)
[setTimeout]
0) scheduleTestFunction <omitted>
<... skipped remaining frames ...>