Gtk: Change content settings window to use a list instead of tabs.

chrome/browser/gtk/options/content_settings_window_gtk.h

Index: chrome/browser/gtk/options/content_settings_window_gtk.h
diff --git a/chrome/browser/gtk/options/content_settings_window_gtk.h b/chrome/browser/gtk/options/content_settings_window_gtk.h
index 1d7befaac96f3867ff758146e3c0054493d7fb25..900e89becc3e655160f1da163f2216185f44fc27 100644
--- a/chrome/browser/gtk/options/content_settings_window_gtk.h
+++ b/chrome/browser/gtk/options/content_settings_window_gtk.h
@@ -36,12 +36,15 @@ class ContentSettingsWindowGtk {
   CHROMEGTK_CALLBACK_2(ContentSettingsWindowGtk, void, OnSwitchPage,
                        GtkNotebookPage*, guint);
   CHROMEGTK_CALLBACK_0(ContentSettingsWindowGtk, void, OnWindowDestroy);
+  CHROMEG_CALLBACK_0(ContentSettingsWindowGtk, void, OnListSelectionChanged,
+                     GtkTreeSelection*);
 
   // The options dialog.
   GtkWidget* dialog_;
 
   // The container of the option pages.
   GtkWidget* notebook_;
+  GtkWidget* list_;
 
   // The Profile associated with these options.
   Profile* profile_;