Switch to standard integer types in sync/.

sync/sessions/data_type_tracker.cc

 // Copyright 2013 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 "sync/sessions/data_type_tracker.h"
 
+#include <stddef.h>
+
 #include <algorithm>
 
 #include "base/logging.h"
 #include "sync/internal_api/public/base/invalidation_interface.h"
 #include "sync/sessions/nudge_tracker.h"
 
 namespace syncer {
 namespace sessions {
 
 DataTypeTracker::DataTypeTracker()
@@ skipping 215 matching lines @@
     unthrottle_time_ = base::TimeTicks();
   }
 }
 
 void DataTypeTracker::UpdateLocalNudgeDelay(base::TimeDelta delay) {
   nudge_delay_ = delay;
 }
 
 }  // namespace sessions
 }  // namespace syncer