The initial load the the DOM L2 Events tests in WebCore/layout-tests/html/level2/events were from a stale snapshot that did not include the changes resulting from the fix to http://www.w3.org/Bugs/Public/ show_bug.cgi?id=1137. The major observable change was that the second parameter to addEventListener should have been monitor.handleEvent and not monitor.
Created attachment 3437 [details] Patch for l2 events tests The whitespace in the rendered tests have also been changed since the snapshot. This patch ignores the whitespace changes within the test scripts. The patch does not contain changes to the -expected files that may result from the test changes. Before committing, the -expected.txt's for the modified tests should be deleted and run-webkit-tests run twice (once to produce the -expected.txt and once to make sure they don't change).
*** Bug 4492 has been marked as a duplicate of this bug. ***