Re-enabling features-test.html for IE. The test was fixed in rev 19867

tests/selenium/javascript_unit_test_list.txt

 #
 # Test Requirements:
 #
 #   Each sample is expected to have a global variable called g_testResult
 #   That starts undefined and is set to true or false when the test is finished.
 #
 # Line Format:
 #
 #   TestType test-name options
 #
@@ skipping 42 matching lines @@
 #
 # Read the sample guidelines
 # http://wiki.corp.google.com/twiki/bin/view/Main/ClientThreeDSampleGuidelines
 #
 #
 small   version-check-test
 small   event-test
 small   test-test
 small   serialization-test
 small   math-test
-small   features-test         except(*iexplore)
+small   features-test
 small   quaternion-test
 # TODO Temporarily removing until V8 bug is fixed
 small   v8-test
 small   init-status-test
 small   quaternion-test
 small   base-test
 small   util-test
 small   pixel-perfection      screenshot pdiff_threshold(2500) pdiff_threshold_mac(3000) except(*iexplore)
 medium  offscreen-test
 medium  texture-set-test      screenshot
@@ skipping 10 matching lines @@
 # -- tests below this line are tests for which there is a python
 #    function to custom run the test. As such, only the 'except' and
 #    pdiff_threshold options have any meaning
 
 # These two tests rely on Selenium getting or setting a page's title and that
 # does not currently work with Chrome.
 medium  TestStressDrawShapes   except(*googlechrome)
 medium  TestStressMultiWindow  except(*googlechrome)
 
 large   TestStressCullingZSort pdiff_threshold(14100)