Do not populate pure Xism x_sync to other ports.

* frame.h (x_sync): Move under HAVE_X_WINDOWS.
* frame.c (other_visible_frames) [HAVE_X_WINDOWS]: Use as such.
* nsfns.m, w32xfns.c (x_sync): Remove no-op.
* w32term.h (x_sync): Remove prototype.

src/ChangeLog

+2013-09-09  Dmitry Antipov  <dmantipov@yandex.ru>
+
+	Do not populate pure Xism x_sync to other ports.
+	* frame.h (x_sync): Move under HAVE_X_WINDOWS.
+	* frame.c (other_visible_frames) [HAVE_X_WINDOWS]: Use as such.
+	* nsfns.m, w32xfns.c (x_sync): Remove no-op.
+	* w32term.h (x_sync): Remove prototype.
+
 2013-09-09  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	Cleanup frame flushing.

src/frame.c

@@ -1108,7 +1108,7 @@ other_visible_frames (struct frame *f)
 
       /* Verify that we can still talk to the frame's X window,
 	 and note any recent change in visibility.  */
-#ifdef HAVE_WINDOW_SYSTEM
+#ifdef HAVE_X_WINDOWS
       if (FRAME_WINDOW_P (XFRAME (this)))
 	x_sync (XFRAME (this));
 #endif

src/frame.h

@@ -1243,7 +1243,6 @@ extern Lisp_Object display_x_get_resource (Display_Info *,
 extern void set_frame_menubar (struct frame *f, bool first_time, bool deep_p);
 extern void x_set_window_size (struct frame *f, int change_grav,
                               int cols, int rows);
-extern void x_sync (struct frame *);
 extern Lisp_Object x_get_focus_frame (struct frame *);
 extern void x_set_mouse_position (struct frame *f, int h, int v);
 extern void x_set_mouse_pixel_position (struct frame *f, int pix_x, int pix_y);
@@ -1269,7 +1268,8 @@ extern void x_wm_set_icon_position (struct frame *, int, int);
 #if !defined USE_X_TOOLKIT
 extern char *x_get_resource_string (const char *, const char *);
 #endif
-#endif
+extern void x_sync (struct frame *);
+#endif /* HAVE_X_WINDOWS */
 
 extern void x_query_colors (struct frame *f, XColor *, int);
 extern void x_query_color (struct frame *f, XColor *);

src/nsfns.m

@@ -2231,15 +2231,6 @@ and GNUstep implementations ("distributor-specific release
   return nsfocus;
 }
 
-void
-x_sync (struct frame *f)
-{
-  /* XXX Not implemented XXX */
-  return;
-}
-
-
-
 /* ==========================================================================
 
     Lisp definitions that, for whatever reason, we can't alias as 'ns-XXX'.

src/w32term.h

@@ -211,7 +211,6 @@ extern void x_set_window_size (struct frame *f, int change_grav,
                               int cols, int rows);
 extern int x_display_pixel_height (struct w32_display_info *);
 extern int x_display_pixel_width (struct w32_display_info *);
-extern void x_sync (struct frame *);
 extern Lisp_Object x_get_focus_frame (struct frame *);
 extern void x_set_mouse_position (struct frame *f, int h, int v);
 extern void x_set_mouse_pixel_position (struct frame *f, int pix_x, int pix_y);

src/w32xfns.c

@@ -333,9 +333,3 @@ drain_message_queue (void)
     }
   return retval;
 }
-
-/* x_sync is a no-op on W32.  */
-void
-x_sync (struct frame *f)
-{
-}