Move BookmarkNodeData into bookmarks namespace.

chrome/browser/ui/bookmarks/bookmark_drag_drop.h

Index: chrome/browser/ui/bookmarks/bookmark_drag_drop.h
diff --git a/chrome/browser/ui/bookmarks/bookmark_drag_drop.h b/chrome/browser/ui/bookmarks/bookmark_drag_drop.h
index fbce748cf53d894f8e1b0c5763c84cdc6686c0a4..8b7885c83afc7eb7782b2c3e26af0628d583b21f 100644
--- a/chrome/browser/ui/bookmarks/bookmark_drag_drop.h
+++ b/chrome/browser/ui/bookmarks/bookmark_drag_drop.h
@@ -11,9 +11,12 @@
 #include "ui/gfx/native_widget_types.h"
 
 class BookmarkNode;
-struct BookmarkNodeData;
 class Profile;
 
+namespace bookmarks {
+struct BookmarkNodeData;
+}
+
 namespace chrome {
 
 // Starts the process of dragging a folder of bookmarks.
@@ -27,7 +30,7 @@ void DragBookmarks(Profile* profile,
 // are copied, otherwise they are moved if they belong to the same |profile|.
 // Returns the drop type used.
 int DropBookmarks(Profile* profile,
-                  const BookmarkNodeData& data,
+                  const bookmarks::BookmarkNodeData& data,
                   const BookmarkNode* parent_node,
                   int index,
                   bool copy);