Move bookmarks extension api implementation to bookmarks dir

chrome/browser/bookmarks/bookmark_extension_helpers.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_BOOKMARK_HELPERS_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_BOOKMARK_HELPERS_H_
+#ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_HELPERS_H_
+#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_HELPERS_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 
 class BookmarkModel;
 class BookmarkNode;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 // Helper functions.
-namespace extension_bookmark_helpers {
+namespace bookmark_extension_helpers {
 
 base::DictionaryValue* GetNodeDictionary(const BookmarkNode* node,
                                          bool recurse,
                                          bool only_folders);
 
 // Add a JSON representation of |node| to the JSON |list|.
 void AddNode(const BookmarkNode* node, base::ListValue* list, bool recurse);
 
 void AddNodeFoldersOnly(const BookmarkNode* node,
                         base::ListValue* list,
                         bool recurse);
 
 bool RemoveNode(BookmarkModel* model,
                 int64 id,
                 bool recursive,
                 std::string* error);
 
-}  // namespace extension_bookmark_helpers
+}  // namespace bookmark_extension_helpers
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BOOKMARK_HELPERS_H_
+#endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_HELPERS_H_