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

components/sync/driver/glue/sync_backend_host_impl.h

 // Copyright 2013 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_DRIVER_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 #define COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "components/invalidation/public/invalidation_handler.h"
 #include "components/sync/base/extensions_activity.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/base/weak_handle.h"
 #include "components/sync/core/configure_reason.h"
 #include "components/sync/core/sync_manager.h"
 #include "components/sync/driver/backend_data_type_configurer.h"
 #include "components/sync/driver/glue/sync_backend_host.h"
+#include "components/sync/engine/cycle/sync_cycle_snapshot.h"
+#include "components/sync/engine/cycle/type_debug_info_observer.h"
 #include "components/sync/protocol/encryption.pb.h"
 #include "components/sync/protocol/sync_protocol_error.h"
-#include "components/sync/sessions/sync_session_snapshot.h"
-#include "components/sync/sessions/type_debug_info_observer.h"
 
 class GURL;
 
 namespace base {
 class MessageLoop;
 }
 
 namespace invalidation {
 class InvalidationService;
 }
@@ skipping 75 matching lines @@
       syncer::ModelSafeGroup group,
       sync_driver::ChangeProcessor* change_processor) override;
   void DeactivateDirectoryDataType(syncer::ModelType type) override;
   void ActivateNonBlockingDataType(
       syncer::ModelType type,
       std::unique_ptr<syncer_v2::ActivationContext>) override;
   void DeactivateNonBlockingDataType(syncer::ModelType type) override;
   void EnableEncryptEverything() override;
   syncer::UserShare* GetUserShare() const override;
   Status GetDetailedStatus() override;
-  syncer::sessions::SyncSessionSnapshot GetLastSessionSnapshot() const override;
+  syncer::SyncCycleSnapshot GetLastCycleSnapshot() const override;
   bool HasUnsyncedItems() const override;
   bool IsNigoriEnabled() const override;
   syncer::PassphraseType GetPassphraseType() const override;
   base::Time GetExplicitPassphraseTime() const override;
   bool IsCryptographerReady(
       const syncer::BaseTransaction* trans) const override;
   void GetModelSafeRoutingInfo(
       syncer::ModelSafeRoutingInfo* out) const override;
   void FlushDirectory() const override;
   void RequestBufferedProtocolEventsAndEnableForwarding() override;
@@ skipping 97 matching lines @@
   // (via the nigori node) and informs the frontend if that is the case.
   // Note: it is illegal to call this before the backend is initialized.
   void AddExperimentalTypes();
 
   // Handles backend initialization failure.
   void HandleInitializationFailureOnFrontendLoop();
 
   // Called from Core::OnSyncCycleCompleted to handle updating frontend
   // thread components.
   void HandleSyncCycleCompletedOnFrontendLoop(
-      const syncer::sessions::SyncSessionSnapshot& snapshot);
+      const syncer::SyncCycleSnapshot& snapshot);
 
   // Called when the syncer failed to perform a configuration and will
   // eventually retry. FinishingConfigurationOnFrontendLoop(..) will be called
   // on successful completion.
   void RetryConfigurationOnFrontendLoop(const base::Closure& retry_callback);
 
   // Helpers to persist a token that can be used to bootstrap sync encryption
   // across browser restart to avoid requiring the user to re-enter their
   // passphrase.  |token| must be valid UTF-8 as we use the PrefService for
   // storage.
@@ skipping 100 matching lines @@
   // The state of the passphrase required to decrypt the bag of encryption keys
   // in the nigori node. Updated whenever a new nigori node arrives or the user
   // manually changes their passphrase state. Cached so we can synchronously
   // check it from the UI thread.
   syncer::PassphraseType cached_passphrase_type_;
 
   // If an explicit passphrase is in use, the time at which the passphrase was
   // first set (if available).
   base::Time cached_explicit_passphrase_time_;
 
-  // UI-thread cache of the last SyncSessionSnapshot received from syncapi.
-  syncer::sessions::SyncSessionSnapshot last_snapshot_;
+  // UI-thread cache of the last SyncCycleSnapshot received from syncapi.
+  syncer::SyncCycleSnapshot last_snapshot_;
 
   invalidation::InvalidationService* invalidator_;
   bool invalidation_handler_registered_;
 
   base::WeakPtrFactory<SyncBackendHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHostImpl);
 };
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_IMPL_H_