Move SendIdleEvents() from wxApp to wxWindow.

Use it to properly implement idle events for
wxGTK menubar, toolbar and statusbar.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66648 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/frame.h

@@ -61,8 +61,7 @@ public:
     // implementation from now on
     // --------------------------
 
-    // GTK callbacks
-    virtual void OnInternalIdle();
+    virtual bool SendIdleEvents(wxIdleEvent& event);
 
 protected:
     // common part of all ctors