[Sync] Move sessions/ to engine/cycle/ and rename things to match.

components/sync/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 COMPONENTS_SYNC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_
-#define COMPONENTS_SYNC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_
-
-#include <stddef.h>
-
-#include <string>
-#include <vector>
-
-#include "base/time/time.h"
-#include "components/sync/base/model_type.h"
-#include "components/sync/base/progress_marker_map.h"
-#include "components/sync/sessions/model_neutral_state.h"
-
-namespace base {
-class DictionaryValue;
-}
-
-namespace syncer {
-namespace sessions {
-
-// An immutable snapshot of state from a SyncSession.  Convenient to use as
-// part of notifications as it is inherently thread-safe.
-// TODO(zea): if copying this all over the place starts getting expensive,
-// consider passing around immutable references instead of values.
-// Default copy and assign welcome.
-class SyncSessionSnapshot {
- public:
-  SyncSessionSnapshot();
-  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(const SyncSessionSnapshot& other);
-  ~SyncSessionSnapshot();
-
-  std::unique_ptr<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  // COMPONENTS_SYNC_SESSIONS_SYNC_SESSION_SNAPSHOT_H_