More fixes for PCH-less build after r78063.

Add missing headers/forward declarations now.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/busyinfo.h

@@ -13,6 +13,11 @@
 
 #if wxUSE_BUSYINFO
 
+#include "wx/colour.h"
+#include "wx/icon.h"
+
+class WXDLLIMPEXP_FWD_CORE wxWindow;
+
 // This class is used to pass all the various parameters to wxBusyInfo ctor.
 // According to the usual naming conventions (see wxAboutDialogInfo,
 // wxFontInfo, ...) it would be called wxBusyInfoInfo, but this would have been

src/generic/busyinfo.cpp

@@ -19,6 +19,7 @@
     #include "wx/busyinfo.h"
     #include "wx/stattext.h"
     #include "wx/panel.h"
+    #include "wx/frame.h"
     #include "wx/sizer.h"
     #include "wx/statbmp.h"
     #include "wx/utils.h"