[gnome-photos] empty-results-box: Use G_DECLARE_FINAL_TYPE

[Debarshi Ray <debarshir src gnome org>]

commit ddffa87e17994d2605774e4d177ed3d1285f1d0b
Author: Shivam Tripathi <shivam flash gmail com>
Date:   Sat Aug 27 12:31:00 2016 +0530

    empty-results-box: Use G_DECLARE_FINAL_TYPE
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763712

 src/photos-empty-results-box.c |    5 -----
 src/photos-empty-results-box.h |   14 +-------------
 2 files changed, 1 insertions(+), 18 deletions(-)
---
diff --git a/src/photos-empty-results-box.c b/src/photos-empty-results-box.c
index dbe5e20..da9ede0 100644
--- a/src/photos-empty-results-box.c
+++ b/src/photos-empty-results-box.c
@@ -43,11 +43,6 @@ struct _PhotosEmptyResultsBox
   PhotosWindowMode mode;
 };
 
-struct _PhotosEmptyResultsBoxClass
-{
-  GtkGridClass parent_class;
-};
-
 enum
 {
   PROP_0,
diff --git a/src/photos-empty-results-box.h b/src/photos-empty-results-box.h
index 75e4eb6..5902855 100644
--- a/src/photos-empty-results-box.h
+++ b/src/photos-empty-results-box.h
@@ -32,19 +32,7 @@
 G_BEGIN_DECLS
 
 #define PHOTOS_TYPE_EMPTY_RESULTS_BOX (photos_empty_results_box_get_type ())
-
-#define PHOTOS_EMPTY_RESULTS_BOX(obj) \
-  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
-   PHOTOS_TYPE_EMPTY_RESULTS_BOX, PhotosEmptyResultsBox))
-
-#define PHOTOS_IS_EMPTY_RESULTS_BOX(obj) \
-  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
-   PHOTOS_TYPE_EMPTY_RESULTS_BOX))
-
-typedef struct _PhotosEmptyResultsBox      PhotosEmptyResultsBox;
-typedef struct _PhotosEmptyResultsBoxClass PhotosEmptyResultsBoxClass;
-
-GType               photos_empty_results_box_get_type           (void) G_GNUC_CONST;
+G_DECLARE_FINAL_TYPE (PhotosEmptyResultsBox, photos_empty_results_box, PHOTOS, EMPTY_RESULTS_BOX, GtkGrid)
 
 GtkWidget          *photos_empty_results_box_new                (PhotosWindowMode mode);