Remove obviously unneeded forward declarations in chrome/browser/[abef]*/*.h.

chrome/browser/bookmarks/bookmark_storage.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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_BOOKMARKS_BOOKMARK_STORAGE_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_STORAGE_H_
 #pragma once
 
 #include "base/file_path.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/bookmarks/bookmark_index.h"
 #include "chrome/common/important_file_writer.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 
 class BookmarkModel;
 class BookmarkNode;
 class Profile;
-class Task;
-class Value;
 
 // BookmarkLoadDetails is used by BookmarkStorage when loading bookmarks.
 // BookmarkModel creates a BookmarkLoadDetails and passes it (including
 // ownership) to BookmarkStorage. BoomarkStorage 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 {
@@ skipping 126 matching lines @@
   // Path to temporary file created during migrating bookmarks from history.
   const FilePath tmp_history_path_;
 
   // See class description of BookmarkLoadDetails for details on this.
   scoped_ptr<BookmarkLoadDetails> details_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkStorage);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_STORAGE_H_