GTK: make tabbed bookmark manager compatible with more types of drops.

chrome/browser/bookmarks/bookmark_drag_data.h

Index: chrome/browser/bookmarks/bookmark_drag_data.h
diff --git a/chrome/browser/bookmarks/bookmark_drag_data.h b/chrome/browser/bookmarks/bookmark_drag_data.h
index 7f007a2ba4a96e8e04c53a7a4d2226349090f4f0..b4b65da08e2687d7a31165c6428a7dea101f280b 100644
--- a/chrome/browser/bookmarks/bookmark_drag_data.h
+++ b/chrome/browser/bookmarks/bookmark_drag_data.h
@@ -89,6 +89,9 @@ struct BookmarkDragData {
   // Reads bookmarks from the given vector.
   bool ReadFromVector(const std::vector<const BookmarkNode*>& nodes);
 
+  // Creates a single-bookmark DragData from url/title pair.
+  bool ReadFromTuple(const GURL& url, const string16& title);
+
   // Writes elements to the clipboard.
   void WriteToClipboard(Profile* profile) const;