Cleanup: Remove unneeded forward declarations in chrome/browser/sync.

chrome/browser/sync/engine/net/server_connection_manager.h

 // Copyright (c) 2011 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_SYNC_ENGINE_NET_SERVER_CONNECTION_MANAGER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_NET_SERVER_CONNECTION_MANAGER_H_
 #pragma once
 
 #include <iosfwd>
 #include <string>
 
 #include "base/atomicops.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/string_util.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/threading/thread_checker.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/sync/syncable/syncable_id.h"
 #include "chrome/common/net/http_return.h"
 
 namespace syncable {
-class WriteTransaction;
 class DirectoryManager;
 }
 
 namespace sync_pb {
 class ClientToServerMessage;
 }
 
 namespace browser_sync {
 
 class ClientToServerMessage;
@@ skipping 362 matching lines @@
 // settings.
 bool FillMessageWithShareDetails(sync_pb::ClientToServerMessage* csm,
                                  syncable::DirectoryManager* manager,
                                  const std::string& share);
 
 std::ostream& operator<<(std::ostream& s, const struct HttpResponse& hr);
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_ENGINE_NET_SERVER_CONNECTION_MANAGER_H_