GTK: Remove deprecated methods and replace them with the new standard calls.

ui/base/gtk/gtk_compat.h

Index: ui/base/gtk/gtk_compat.h
diff --git a/ui/base/gtk/gtk_compat.h b/ui/base/gtk/gtk_compat.h
index b9f7fd2a0ba8c89c2c0caece901323fa555382be..e5ef3262728d78173d2009bac6560bd34a57e886 100644
--- a/ui/base/gtk/gtk_compat.h
+++ b/ui/base/gtk/gtk_compat.h
@@ -17,6 +17,10 @@
 // alphabetically by method.
 
 #if !GTK_CHECK_VERSION(2, 20, 0)
+inline gboolean gtk_widget_get_mapped(GtkWidget* widget) {
+  return GTK_WIDGET_MAPPED(widget);
+}
+
 inline gboolean gtk_widget_get_realized(GtkWidget* widget) {
   return GTK_WIDGET_REALIZED(widget);
 }
@@ -24,6 +28,22 @@ inline gboolean gtk_widget_get_realized(GtkWidget* widget) {
 inline gboolean gtk_widget_is_toplevel(GtkWidget* widget) {
   return GTK_WIDGET_TOPLEVEL(widget);
 }
+
+inline void gtk_widget_set_mapped(GtkWidget* widget,
+                                  gboolean mapped) {
+  if (mapped)
+    GTK_WIDGET_SET_FLAGS(widget, GTK_MAPPED);
+  else
+    GTK_WIDGET_UNSET_FLAGS(widget, GTK_MAPPED);
+}
+
+inline void gtk_widget_set_realized(GtkWidget* widget,
+                                    gboolean realized) {
+  if (realized)
+    GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
+  else
+    GTK_WIDGET_UNSET_FLAGS(widget, GTK_REALIZED);
+}
 #endif
 
 #if !GTK_CHECK_VERSION(2, 22, 0)