[Mac] Replace the custom bookmark menus with native NSMenus.

chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h b/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h
index 4ebee07a6cd743b45ccb3b2d6f1fab0822602fab..c86419abde8e80509bddc41bbfb6e0b5d1930aa4 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h
@@ -22,20 +22,12 @@ class BookmarkNode;
   // Starting index of bookmarkFolder children that we care to use.
   int startingChildIndex_;
 
-  // Should we draw the folder arrow as needed?  Not used for the bar
-  // itself but used on the folder windows.
-  BOOL drawFolderArrow_;
-
-  // Arrow for folders
-  scoped_nsobject<NSImage> arrowImage_;
-
   // Text color for title.
   scoped_nsobject<NSColor> textColor_;
 }
 
 @property(nonatomic, readwrite, assign) const BookmarkNode* bookmarkNode;
 @property(nonatomic, readwrite, assign) int startingChildIndex;
-@property(nonatomic, readwrite, assign) BOOL drawFolderArrow;
 
 // Create a button cell which draws with a theme.
 + (id)buttonCellForNode:(const BookmarkNode*)node