components: Cleanup class/struct fwd declarations

components/sync_bookmarks/bookmark_change_processor.h

 // Copyright (c) 2012 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_SYNC_BOOKMARKS_BOOKMARK_CHANGE_PROCESSOR_H_
 #define COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_CHANGE_PROCESSOR_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
 #include "components/bookmarks/browser/bookmark_model_observer.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "components/sync/model/change_processor.h"
 #include "components/sync/model/data_type_error_handler.h"
 #include "components/sync_bookmarks/bookmark_model_associator.h"
 
-class Profile;
-
 namespace base {
 class RefCountedMemory;
 }  // namespace base
 
 namespace syncer {
 class SyncClient;
 class WriteNode;
 class WriteTransaction;
 }  // namespace syncer
 
@@ skipping 216 matching lines @@
 
   // The two models should be associated according to this ModelAssociator.
   BookmarkModelAssociator* model_associator_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkChangeProcessor);
 };
 
 }  // namespace sync_bookmarks
 
 #endif  // COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_CHANGE_PROCESSOR_H_