[Sync] Removing duplicated includes between cc and h files.

components/sync/api/sync_error.cc

 // 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.
 
 #include "components/sync/api/sync_error.h"
 
 #include <ostream>
 
 #include "base/location.h"
 #include "base/logging.h"
-#include "components/sync/base/model_type.h"
 
 namespace syncer {
 
 SyncError::SyncError() {
   Clear();
 }
 
 SyncError::SyncError(const tracked_objects::Location& location,
                      ErrorType error_type,
                      const std::string& message,
@@ skipping 131 matching lines @@
               logSeverity >= ::logging::GetMinLogLevel())
       << ModelTypeToString(model_type_) << " " << GetMessagePrefix()
       << message_;
 }
 
 void PrintTo(const SyncError& sync_error, std::ostream* os) {
   *os << sync_error.ToString();
 }
 
 }  // namespace syncer