We used containment instead of inheritance for implementing DateTimeEditElement::EditControlOwner interface when we implemented in TimeInputType class to use BaseDateAndTimeInputType as base class of TimeInputType regardless single field UI or multiple fields UI. Once we use different base class based on single field UI or multiple fields UI, we can put DateTimeEditElement::EditControlOwner interface into base class list of BaseMultipleFieldsDateAndTimeInputType class.
Created attachment 165940 [details] Patch 1
Comment on attachment 165940 [details] Patch 1 Could you review this patch? Thanks in advance.
Comment on attachment 165940 [details] Patch 1 ok
Comment on attachment 165940 [details] Patch 1 Clearing flags on attachment: 165940 Committed r129739: <http://trac.webkit.org/changeset/129739>
All reviewed patches have been landed. Closing bug.