sync: Add UI code for per type debug counters

sync/internal_api/public/sessions/status_counters.h

 // Copyright 2014 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_SESSIONS_STATUS_COUNTERS_H_
 #define SYNC_INTERNAL_API_PUBLIC_SESSIONS_STATUS_COUNTERS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "sync/base/sync_export.h"
 
 namespace syncer {
 
 // A class to maintain counts related to the current status of a sync type.
 struct SYNC_EXPORT_PRIVATE StatusCounters {
   StatusCounters();
   ~StatusCounters();
 
   scoped_ptr<base::DictionaryValue> ToValue() const;
   std::string ToString() const;
 
-  size_t num_total_entries;
+  size_t num_entries;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SESSIONS_STATUS_COUNTERS_H_