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

components/sync/engine_impl/cycle/sync_cycle.cc

 // 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.
 
-#include "components/sync/sessions_impl/sync_session.h"
+#include "components/sync/engine_impl/cycle/sync_cycle.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/logging.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/engine/model_safe_worker.h"
 #include "components/sync/syncable/directory.h"
 
 namespace syncer {
-namespace sessions {
 
 // static
-SyncSession* SyncSession::Build(SyncSessionContext* context,
-                                Delegate* delegate) {
-  return new SyncSession(context, delegate);
+SyncCycle* SyncCycle::Build(SyncCycleContext* context, Delegate* delegate) {
+  return new SyncCycle(context, delegate);
 }
 
-SyncSession::SyncSession(SyncSessionContext* context, Delegate* delegate)
+SyncCycle::SyncCycle(SyncCycleContext* context, Delegate* delegate)
     : context_(context), delegate_(delegate) {
   status_controller_.reset(new StatusController());
 }
 
-SyncSession::~SyncSession() {}
+SyncCycle::~SyncCycle() {}
 
-SyncSessionSnapshot SyncSession::TakeSnapshot() const {
+SyncCycleSnapshot SyncCycle::TakeSnapshot() const {
   return TakeSnapshotWithSource(sync_pb::GetUpdatesCallerInfo::UNKNOWN);
 }
 
-SyncSessionSnapshot SyncSession::TakeSnapshotWithSource(
+SyncCycleSnapshot SyncCycle::TakeSnapshotWithSource(
     sync_pb::GetUpdatesCallerInfo::GetUpdatesSource legacy_updates_source)
     const {
   syncable::Directory* dir = context_->directory();
 
   ProgressMarkerMap download_progress_markers;
   for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
     ModelType type(ModelTypeFromInt(i));
     dir->GetDownloadProgressAsString(type, &download_progress_markers[type]);
   }
 
   std::vector<int> num_entries_by_type(MODEL_TYPE_COUNT, 0);
   std::vector<int> num_to_delete_entries_by_type(MODEL_TYPE_COUNT, 0);
   dir->CollectMetaHandleCounts(&num_entries_by_type,
                                &num_to_delete_entries_by_type);
 
-  SyncSessionSnapshot snapshot(
+  SyncCycleSnapshot snapshot(
       status_controller_->model_neutral_state(), download_progress_markers,
       delegate_->IsCurrentlyThrottled(),
       status_controller_->num_encryption_conflicts(),
       status_controller_->num_hierarchy_conflicts(),
       status_controller_->num_server_conflicts(),
       context_->notifications_enabled(), dir->GetEntriesCount(),
       status_controller_->sync_start_time(),
       status_controller_->poll_finish_time(), num_entries_by_type,
       num_to_delete_entries_by_type, legacy_updates_source);
 
   return snapshot;
 }
 
-void SyncSession::SendSyncCycleEndEventNotification(
+void SyncCycle::SendSyncCycleEndEventNotification(
     sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source) {
   SyncCycleEvent event(SyncCycleEvent::SYNC_CYCLE_ENDED);
   event.snapshot = TakeSnapshotWithSource(source);
 
   DVLOG(1) << "Sending cycle end event with snapshot: "
            << event.snapshot.ToString();
   FOR_EACH_OBSERVER(SyncEngineEventListener, *(context_->listeners()),
                     OnSyncCycleEvent(event));
 }
 
-void SyncSession::SendEventNotification(SyncCycleEvent::EventCause cause) {
+void SyncCycle::SendEventNotification(SyncCycleEvent::EventCause cause) {
   SyncCycleEvent event(cause);
   event.snapshot = TakeSnapshot();
 
   DVLOG(1) << "Sending event with snapshot: " << event.snapshot.ToString();
   FOR_EACH_OBSERVER(SyncEngineEventListener, *(context_->listeners()),
                     OnSyncCycleEvent(event));
 }
 
-void SyncSession::SendProtocolEvent(const ProtocolEvent& event) {
+void SyncCycle::SendProtocolEvent(const ProtocolEvent& event) {
   FOR_EACH_OBSERVER(SyncEngineEventListener, *(context_->listeners()),
                     OnProtocolEvent(event));
 }
 
-}  // namespace sessions
 }  // namespace syncer