bookmarks: Move BookmarkNode into 'bookmarks' namespace.

components/bookmarks/browser/bookmark_node.h

Index: components/bookmarks/browser/bookmark_node.h
diff --git a/components/bookmarks/browser/bookmark_node.h b/components/bookmarks/browser/bookmark_node.h
index fd3fd1a47b122dc1985bb513b1070f16a4b17816..3d24462a9befebc66ab10c928fbe4703f2552c65 100644
--- a/components/bookmarks/browser/bookmark_node.h
+++ b/components/bookmarks/browser/bookmark_node.h
@@ -14,8 +14,8 @@
 #include "url/gurl.h"
 
 namespace bookmarks {
+
 class BookmarkModel;
-}
 
 // BookmarkNode ---------------------------------------------------------------
 
@@ -117,7 +117,7 @@ class BookmarkNode : public ui::TreeNode<BookmarkNode> {
   // HistoryContentsProvider.
 
  private:
-  friend class bookmarks::BookmarkModel;
+  friend class BookmarkModel;
 
   // A helper function to initialize various fields during construction.
   void Initialize(int64 id);
@@ -211,4 +211,6 @@ class BookmarkPermanentNode : public BookmarkNode {
   DISALLOW_COPY_AND_ASSIGN(BookmarkPermanentNode);
 };
 
+}  // namespace bookmarks
+
 #endif  // COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_NODE_H_