common: Do not leak MetaResizePopup to the public api

src/meta/common.h

@@ -43,8 +43,6 @@
 #define META_VIRTUAL_CORE_POINTER_ID 2
 #define META_VIRTUAL_CORE_KEYBOARD_ID 3
 
-typedef struct _MetaResizePopup MetaResizePopup;
-
 /**
  * MetaFrameFlags:
  * @META_FRAME_ALLOWS_DELETE: frame allows delete

src/ui/resizepopup.h

@@ -29,6 +29,8 @@
 #include <glib.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
+typedef struct _MetaResizePopup MetaResizePopup;
+
 MetaResizePopup* meta_ui_resize_popup_new          (Display *display,
                                                     int      screen_number);
 void             meta_ui_resize_popup_free         (MetaResizePopup *popup);

src/x11/window-x11-private.h

@@ -20,11 +20,12 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "window-private.h"
-
 #ifndef META_WINDOW_X11_PRIVATE_H
 #define META_WINDOW_X11_PRIVATE_H
 
+#include "window-private.h"
+#include "ui/resizepopup.h"
+
 G_BEGIN_DECLS
 
 typedef struct _MetaWindowX11Private MetaWindowX11Private;