Cleanup: IWYU for base/time.h in sync/.

sync/internal_api/public/engine/sync_status.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 SYNC_INTERNAL_API_PUBLIC_ENGINE_STATUS_SUMMARY_H_
 #define SYNC_INTERNAL_API_PUBLIC_ENGINE_STATUS_SUMMARY_H_
 
 #include <string>
 
+#include "base/time.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/sync_encryption_handler.h"
 #include "sync/protocol/sync_protocol_error.h"
 
 namespace syncer {
 
 // Status encapsulates detailed state about the internals of the SyncManager.
 //
 // This struct is closely tied to the AllStatus object which uses instances of
@@ skipping 78 matching lines @@
   // Per-datatype throttled status.
   ModelTypeSet throttled_types;
 
   // The unique identifer for this client.
   std::string unique_id;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_ENGINE_STATUS_SUMMARY_H_