Get Firefox and IE working again with Object.defineProperty!

Get Firefox and IE working again with Object.defineProperty!
Committed: https://code.google.com/p/dart/source/detail?r=3312

[Emily Fortuna, 2012-01-13 18:31:48]

(jmesserly is for the addition to modification to frog, sigmund for taking a
look at my test.status modifications)

[Siggi Cherem (dart-lang), 2012-01-13 18:43:34]

lgtm on the status file changes

http://codereview.chromium.org/9214005/diff/3001/tools/testing/perf_testing/c...
File tools/testing/perf_testing/create_graph.py (right):

http://codereview.chromium.org/9214005/diff/3001/tools/testing/perf_testing/c...
tools/testing/perf_testing/create_graph.py:514: #TODO(efortuna): Complain to
whesse to get frog and froglib flags
Rephrase :), maybe simply say:

TODO(efortuna): ensure that the frog and froglib flags work when they get
implemented in test.dart (Bug #1046)

http://codereview.chromium.org/9214005/diff/3001/tools/testing/perf_testing/c...
tools/testing/perf_testing/create_graph.py:521: 'frogc'),'--froglib=%s' %
os.path.join(dart_sdk, 'lib')), '--report',
space after ,

[Siggi Cherem (dart-lang), 2012-01-13 18:47:05]

btw - are the other status files unchanged because we are still failing there?
I'm thinking of:
leg.status
peg.status
css.status
frog.status

[Jennifer Messerly, 2012-01-13 19:46:56]

lgtm!