Support loading extensions into the bookmark toolbar.

chrome/browser/views/bookmark_bar_view.h

Index: chrome/browser/views/bookmark_bar_view.h
===================================================================
--- chrome/browser/views/bookmark_bar_view.h	(revision 11270)
+++ chrome/browser/views/bookmark_bar_view.h	(working copy)
@@ -7,6 +7,7 @@
 
 #include "chrome/browser/bookmarks/bookmark_drag_data.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/common/slide_animation.h"
 #include "chrome/views/label.h"
 #include "chrome/views/menu.h"
@@ -384,6 +385,11 @@
   // throbs.
   void StopThrobbing(bool immediate);
 
+  // Add any extension toolstrips which may be requested by the given
+  // extensions.  Views for the toolstrips are inserted after the last bookmark
+  // button.  Returns true if there were any new toolstrips added.
+  bool AddExtensionToolstrips(const ExtensionList* extensions);
+
   Profile* profile_;
 
   // Used for opening urls.
@@ -436,6 +442,9 @@
   // overflow_button_ or a button on the bar.
   views::BaseButton* throbbing_view_;
 
+  // How many extension toolstrips we have showing in the toolbar.
+  int num_extension_toolstrips_;
+
   DISALLOW_COPY_AND_ASSIGN(BookmarkBarView);
 };