GTK: Implement the global bookmarks menu.

chrome/browser/ui/gtk/global_menu_bar.h

Index: chrome/browser/ui/gtk/global_menu_bar.h
diff --git a/chrome/browser/ui/gtk/global_menu_bar.h b/chrome/browser/ui/gtk/global_menu_bar.h
index 0497a649203dbf9e88912cddc8b925cf5aa108ac..1364e51a27df2035120964de1c39d89245573c62 100644
--- a/chrome/browser/ui/gtk/global_menu_bar.h
+++ b/chrome/browser/ui/gtk/global_menu_bar.h
@@ -8,6 +8,7 @@
 #include <map>
 
 #include "chrome/browser/command_updater.h"
+#include "chrome/browser/ui/gtk/global_bookmark_menu.h"
 #include "chrome/browser/ui/gtk/global_history_menu.h"
 #include "chrome/browser/ui/gtk/owned_widget_gtk.h"
 #include "content/common/notification_observer.h"
@@ -36,6 +37,7 @@ class GlobalMenuBar : public CommandUpdater::CommandObserver,
   static const int TAG_RECENTLY_CLOSED = 2;
   static const int TAG_MOST_VISITED_HEADER = 3;
   static const int TAG_RECENTLY_CLOSED_HEADER = 4;
+  static const int TAG_BOOKMARK_CLEARABLE = 5;
 
   explicit GlobalMenuBar(Browser* browser);
   virtual ~GlobalMenuBar();
@@ -79,6 +81,9 @@ class GlobalMenuBar : public CommandUpdater::CommandObserver,
   // history menu fresh.
   GlobalHistoryMenu history_menu_;
 
+  // Listens to the bookmark model and updates the menu.
+  GlobalBookmarkMenu bookmark_menu_;
+
   // For some menu items, we want to show the accelerator, but not actually
   // explicitly handle it. To this end we connect those menu items' accelerators
   // to this group, but don't attach this group to any top level window.