Move BookmarkIndex into bookmarks namespace.

components/bookmarks/browser/bookmark_storage.h

 // Copyright 2014 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 COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_STORAGE_H_
 #define COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_STORAGE_H_
 
 #include "base/files/file_path.h"
 #include "base/files/important_file_writer.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 
-class BookmarkIndex;
 class BookmarkModel;
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace bookmarks {
 
+class BookmarkIndex;
+
 // BookmarkLoadDetails is used by BookmarkStorage when loading bookmarks.
 // BookmarkModel creates a BookmarkLoadDetails and passes it (including
 // ownership) to BookmarkStorage. BookmarkStorage loads the bookmarks (and
 // index) in the background thread, then calls back to the BookmarkModel (on
 // the main thread) when loading is done, passing ownership back to the
 // BookmarkModel. While loading BookmarkModel does not maintain references to
 // the contents of the BookmarkLoadDetails, this ensures we don't have any
 // threading problems.
 class BookmarkLoadDetails {
  public:
@@ skipping 128 matching lines @@
 
   // Sequenced task runner where file I/O operations will be performed at.
   scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkStorage);
 };
 
 }  // namespace bookmarks
 
 #endif  // COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_STORAGE_H_