From Bug 42958. Tests for textInput need to improve. This one is a part of such effort.
http://www.w3.org/TR/DOM-Level-3-Events/#keyset-cancelable_keys
Created attachment 63688 [details] Patch
Hi Tony, could you take a look?
Comment on attachment 63688 [details] Patch Thanks!
Committed r64962: <http://trac.webkit.org/changeset/64962>