[gtk+] quartz: fix quartz build

[Christian Hergert <chergert src gnome org>]

commit 0b88d7976ccd69e74f4023156edb284a33f6b21e
Author: Christian Hergert <christian hergert me>
Date:   Sun Apr 24 00:46:15 2016 -0700

    quartz: fix quartz build
    
    The quartz backend has its own implementation of these that
    collide since the gtkdragdest.c extraction.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764712

 gtk/Makefile.am     |    4 ++--
 gtk/gtkdnd-quartz.c |   10 ----------
 2 files changed, 2 insertions(+), 12 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index e546073..180c423 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -737,7 +737,6 @@ gtk_base_c_sources =                \
        gtkcsswidgetnode.c      \
         gtkcsswin32sizevalue.c  \
        gtkdialog.c             \
-       gtkdragdest.c           \
        gtkdragsource.c         \
        gtkdrawingarea.c        \
        gtkeditable.c           \
@@ -959,7 +958,8 @@ gtk_base_c_sources +=               \
 else
 gtk_base_c_sources +=          \
        gtkclipboard.c          \
-       gtkdnd.c
+       gtkdnd.c                \
+       gtkdragdest.c
 endif
 
 nodist_gtk_c_sources =
diff --git a/gtk/gtkdnd-quartz.c b/gtk/gtkdnd-quartz.c
index 7fe27b6..6198986 100644
--- a/gtk/gtkdnd-quartz.c
+++ b/gtk/gtkdnd-quartz.c
@@ -46,7 +46,6 @@
 #include "gtkiconhelperprivate.h"
 
 typedef struct _GtkDragSourceInfo GtkDragSourceInfo;
-typedef struct _GtkDragDestSite GtkDragDestSite;
 typedef struct _GtkDragDestInfo GtkDragDestInfo;
 typedef struct _GtkDragFindData GtkDragFindData;
 
@@ -82,15 +81,6 @@ struct _GtkDragSourceInfo
   gboolean           delete;
 };
 
-struct _GtkDragDestSite 
-{
-  GtkDestDefaults    flags;
-  GtkTargetList     *target_list;
-  GdkDragAction      actions;
-  guint              have_drag : 1;
-  guint              track_motion : 1;
-};
-
 struct _GtkDragDestInfo 
 {
   GtkWidget         *widget;      /* Widget in which drag is in */