Added nudge source counters to about: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 "sync/base/sync_export.h"
@@ skipping 63 matching lines @@
   int empty_get_updates;
 
   // Count of sync cycles that successfully committed items;
   int sync_cycles_with_commits;
   int sync_cycles_without_commits;
 
   // Count of useless and useful syncs we perform.
   int useless_sync_cycles;
   int useful_sync_cycles;
 
+  // Nudge counts for each possible source
+  int nudge_source_unknown;
+  int nudge_source_notification;
+  int nudge_source_local;
+  int nudge_source_continuation;
+  int nudge_source_local_refresh;
+
   // Encryption related.
   ModelTypeSet encrypted_types;
   bool cryptographer_ready;
   bool crypto_has_pending_keys;
   bool has_keystore_key;
   base::Time keystore_migration_time;
   PassphraseType passphrase_type;
 
   // 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_