Switch to standard integer types in sync/.

sync/engine/backoff_delay_provider.h

 // Copyright 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_ENGINE_BACKOFF_DELAY_PROVIDER_H_
 #define SYNC_ENGINE_BACKOFF_DELAY_PROVIDER_H_
 
+#include "base/macros.h"
 #include "base/time/time.h"
 #include "sync/base/sync_export.h"
 
 namespace syncer {
 
 namespace sessions {
 struct ModelNeutralState;
 }
 
 // A component used to get time delays associated with exponential backoff.
@@ skipping 29 matching lines @@
  private:
   const base::TimeDelta default_initial_backoff_;
   const base::TimeDelta short_initial_backoff_;
 
   DISALLOW_COPY_AND_ASSIGN(BackoffDelayProvider);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_BACKOFF_DELAY_PROVIDER_H_