GTK: More 2.18 goodness. Move from macros to real accessor functions.

chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc

Index: chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc
diff --git a/chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc b/chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc
index 4f8d8575a1f17268c477948ae9591115eb356466..e549f8640a72a08c9fc0c75f15369573f87e2ed8 100644
--- a/chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc
+++ b/chrome/browser/ui/gtk/gtk_chrome_shrinkable_hbox.cc
@@ -27,12 +27,12 @@ struct SizeAllocateData {
 };
 
 void CountVisibleChildren(GtkWidget* child, gpointer userdata) {
-  if (GTK_WIDGET_VISIBLE(child))
+  if (gtk_widget_get_visible(child))
     ++(*reinterpret_cast<int*>(userdata));
 }
 
 void SumChildrenWidthRequisition(GtkWidget* child, gpointer userdata) {
-  if (GTK_WIDGET_VISIBLE(child)) {
+  if (gtk_widget_get_visible(child)) {
     GtkRequisition req;
     gtk_widget_get_child_requisition(child, &req);
     (*reinterpret_cast<int*>(userdata)) += std::max(req.width, 0);
@@ -40,14 +40,14 @@ void SumChildrenWidthRequisition(GtkWidget* child, gpointer userdata) {
 }
 
 void ShowInvisibleChildren(GtkWidget* child, gpointer userdata) {
-  if (!GTK_WIDGET_VISIBLE(child)) {
+  if (!gtk_widget_get_visible(child)) {
     gtk_widget_show(child);
     ++(*reinterpret_cast<int*>(userdata));
   }
 }
 
 void ChildSizeAllocate(GtkWidget* child, gpointer userdata) {
-  if (!GTK_WIDGET_VISIBLE(child))
+  if (!gtk_widget_get_visible(child))
     return;
 
   SizeAllocateData* data = reinterpret_cast<SizeAllocateData*>(userdata);