[Sync] Refactoring polling to be reliable.

sync/internal_api/public/sessions/sync_session_snapshot.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_INTERNAL_API_PUBLIC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_
 #define SYNC_INTERNAL_API_PUBLIC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 21 matching lines @@
   SyncSessionSnapshot(
       const ModelNeutralState& model_neutral_state,
       const ProgressMarkerMap& download_progress_markers,
       bool is_silenced,
       int num_encryption_conflicts,
       int num_hierarchy_conflicts,
       int num_server_conflicts,
       bool notifications_enabled,
       size_t num_entries,
       base::Time sync_start_time,
+      base::Time poll_finish_time,
       const std::vector<int>& num_entries_by_type,
       const std::vector<int>& num_to_delete_entries_by_type,
       sync_pb::GetUpdatesCallerInfo::GetUpdatesSource legacy_updates_source);
   ~SyncSessionSnapshot();
 
   // Caller takes ownership of the returned dictionary.
   base::DictionaryValue* ToValue() const;
 
   std::string ToString() const;
 
   ModelNeutralState model_neutral_state() const {
     return model_neutral_state_;
   }
   const ProgressMarkerMap& download_progress_markers() const;
   bool is_silenced() const;
   int num_encryption_conflicts() const;
   int num_hierarchy_conflicts() const;
   int num_server_conflicts() const;
   bool notifications_enabled() const;
   size_t num_entries() const;
   base::Time sync_start_time() const;
+  base::Time poll_finish_time() const;
   const std::vector<int>& num_entries_by_type() const;
   const std::vector<int>& num_to_delete_entries_by_type() const;
   sync_pb::GetUpdatesCallerInfo::GetUpdatesSource legacy_updates_source() const;
 
   // Set iff this snapshot was not built using the default constructor.
   bool is_initialized() const;
 
  private:
   ModelNeutralState model_neutral_state_;
   ProgressMarkerMap download_progress_markers_;
   bool is_silenced_;
   int num_encryption_conflicts_;
   int num_hierarchy_conflicts_;
   int num_server_conflicts_;
   bool notifications_enabled_;
   size_t num_entries_;
   base::Time sync_start_time_;
+  base::Time poll_finish_time_;
 
   std::vector<int> num_entries_by_type_;
   std::vector<int> num_to_delete_entries_by_type_;
 
   // This enum value used to be an important part of the sync protocol, but is
   // now deprecated.  We continue to use it in the snapshot because there is
   // still some value in displaying it on the about:sync page.
   sync_pb::GetUpdatesCallerInfo::GetUpdatesSource legacy_updates_source_;
 
   bool is_initialized_;
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_