Tests asynchronous call stacks in debugger.

Set timer for test function.
Captured call stacks in no particular order:
Call stack:
    0) animFrame1 (async-callstack.js:36)
    [requestAnimationFrame]
    0) timeout1 (async-callstack.js:24)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>

Call stack:
    0) animFrame2 (async-callstack.js:53)
    [requestAnimationFrame]
    0) animFrame1 (async-callstack.js:38)
    [requestAnimationFrame]
    0) timeout1 (async-callstack.js:24)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>

Call stack:
    0) interval1 (async-callstack.js:43)
    1) innerInterval1 (async-callstack.js:29)
    [setInterval]
    0) timeout1 (async-callstack.js:25)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>

Call stack:
    0) timeout1 (async-callstack.js:23)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>

Call stack:
    0) timeout2 (async-callstack.js:48)
    [setTimeout]
    0) animFrame1 (async-callstack.js:37)
    [requestAnimationFrame]
    0) timeout1 (async-callstack.js:24)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>

Call stack:
    0) timeout3 (async-callstack.js:67)
    1) longTail0 (async-callstack.js:56)
    [setTimeout]
    0) longTail1 (:1)
    [setTimeout]
    0) longTail2 (:2)
    [setTimeout]
    0) longTail3 (:3)
    [setTimeout]
    0) longTail4 (:4)
    [setTimeout]
    0) longTail5 (:5)
    [setTimeout]
    0) longTail6 (:6)
    [setTimeout]
    0) longTail7 (:7)
    [setTimeout]
    0) longTail8 (:8)
    [setTimeout]
    0) longTail9 (:9)
    [setTimeout]
    0) longTail10 (:10)
    [setTimeout]
    0) longTail11 (:11)
    [setTimeout]
    0) longTail12 (:12)
    [setTimeout]
    0) longTail13 (:13)
    [setTimeout]
    0) longTail14 (:14)
    [setTimeout]
    0) longTail15 (:15)
    [setTimeout]
    0) longTail16 (:16)
    [setTimeout]
    0) longTail17 (:17)
    [setTimeout]
    0) longTail18 (:18)
    [setTimeout]
    0) longTail19 (:19)
    [setTimeout]
    0) longTail20 (:20)
    [setTimeout]
    0) eval (:21)
    1) animFrame2 (async-callstack.js:62)
    [requestAnimationFrame]
    0) animFrame1 (async-callstack.js:38)
    [requestAnimationFrame]
    0) timeout1 (async-callstack.js:24)
    1) innerTestFunction (async-callstack.js:16)
    [setTimeout]
    0) testFunction (async-callstack.js:18)
    [setTimeout]
    0) scheduleTestFunction <omitted>
    <... skipped remaining frames ...>