We should notify the embedding client that editing began when a text field is focused. Currently we only notify the embedding client that editing began when the value of a text field is changed by a person. And we always notify the client that editing ended when a text field is defocused.
Created attachment 253849 [details] Patch and unit tests
<rdar://problem/21142108>
Committed r185089: <http://trac.webkit.org/changeset/185089>