Changed the code for running a test case to make beter use of dart:async.

Changed the code for running a test case to make beter use of dart:async.

R=sigmund@google.com

Committed: https://code.google.com/p/dart/source/detail?r=24643

[Siggi Cherem (dart-lang), 2013-07-01 18:24:31]

lgtm

https://codereview.chromium.org/18191019/diff/2001/pkg/unittest/lib/src/test_...
File pkg/unittest/lib/src/test_case.dart (right):

https://codereview.chromium.org/18191019/diff/2001/pkg/unittest/lib/src/test_...
pkg/unittest/lib/src/test_case.dart:73: else stack = "$stack";
style: if-else need { } and separate lines for each statement, or consider using
a ternary ?: expression

https://codereview.chromium.org/18191019/diff/2001/pkg/unittest/lib/src/test_...
pkg/unittest/lib/src/test_case.dart:108: _markCallbackComplete();
suggestion: to make the ++ and -- of callbackFunctionsOutstanding symmetric, I
wonder if we can to inline this method here.

If so, can _callbackFunctionsOutstanding become a local variable?

[gram, 2013-07-01 18:57:21]

Committed patchset #2 manually as r24643 (presubmit successful).