Add wxAnyButton so the shared class hierarchy of wxButton and wxToggleButton is accurate.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69659 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/timer.h

@@ -198,6 +198,9 @@ public:
 class wxTimerEvent : public wxEvent
 {
 public:
+    wxTimerEvent();
+    wxTimerEvent(wxTimer& timer);
+
     /**
         Returns the interval of the timer which generated this event.
     */