GTK: Seal up GSEALs, focusing on GtkSelectionData.

ui/gfx/gtk_preserve_window.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/gtk_preserve_window.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "ui/base/gtk/gtk_compat.h"
@@ skipping 75 matching lines @@
     gdk_window_reparent(gdk_window,
                         gtk_widget_get_parent_window(widget),
                         allocation.x,
                         allocation.y);
     GtkPreserveWindowPrivate* priv = GTK_PRESERVE_WINDOW_GET_PRIVATE(widget);
     if (!priv->delegate_resize) {
       gdk_window_resize(gdk_window,
                         allocation.width,
                         allocation.height);
     }
-    widget->style = gtk_style_attach(widget->style, widget->window);
-    gtk_style_set_background(gtk_widget_get_style(widget),
-                             gdk_window, GTK_STATE_NORMAL);
-
     gint event_mask = gtk_widget_get_events(widget);
     event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;
     gdk_window_set_events(gdk_window, (GdkEventMask) event_mask);
     gdk_window_set_user_data(gdk_window, widget);
 
-    // Deprecated as of GTK 2.22. Used for compatibility.
-    // It should be: gtk_widget_set_realized(widget, TRUE)
-    GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
+    gtk_widget_set_realized(widget, TRUE);
+
+    gtk_widget_style_attach(widget);
+    gtk_style_set_background(gtk_widget_get_style(widget),
+                             gdk_window, GTK_STATE_NORMAL);
   } else {
     GTK_WIDGET_CLASS(gtk_preserve_window_parent_class)->realize(widget);
   }
 }
 
 static void gtk_preserve_window_unrealize(GtkWidget* widget) {
   g_return_if_fail(GTK_IS_PRESERVE_WINDOW(widget));
 
   GtkPreserveWindowPrivate* priv = GTK_PRESERVE_WINDOW_GET_PRIVATE(widget);
   if (priv->preserve_window) {
@@ skipping 111 matching lines @@
   }
 }
 
 void gtk_preserve_window_delegate_resize(GtkPreserveWindow* widget,
                                          gboolean delegate) {
   GtkPreserveWindowPrivate* priv = GTK_PRESERVE_WINDOW_GET_PRIVATE(widget);
   priv->delegate_resize = delegate;
 }
 
 G_END_DECLS