[Sync] Move //sync to //components/sync.

sync/internal_api/public/internal_components_factory.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.
-//
-// InternalComponentsFactory exists so that tests can override creation of
-// components used by the SyncManager that are not exposed across the sync
-// API boundary.
-
-#ifndef SYNC_INTERNAL_API_PUBLIC_INTERNAL_COMPONENTS_FACTORY_H_
-#define SYNC_INTERNAL_API_PUBLIC_INTERNAL_COMPONENTS_FACTORY_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/files/file_path.h"
-#include "sync/base/sync_export.h"
-#include "sync/internal_api/public/engine/model_safe_worker.h"
-
-namespace syncer {
-
-class CancelationSignal;
-class ExtensionsActivity;
-class ModelTypeRegistry;
-class ServerConnectionManager;
-class SyncEngineEventListener;
-class SyncScheduler;
-
-namespace sessions {
-class DebugInfoGetter;
-class SyncSessionContext;
-}
-
-namespace syncable {
-class Directory;
-class DirectoryBackingStore;
-}
-
-class SYNC_EXPORT InternalComponentsFactory {
- public:
-  enum EncryptionMethod {
-    ENCRYPTION_LEGACY,
-    // Option to enable support for keystore key based encryption.
-    ENCRYPTION_KEYSTORE
-  };
-
-  enum BackoffOverride {
-    BACKOFF_NORMAL,
-    // Use this value for integration testing to avoid long delays /
-    // timing out tests. Uses kInitialBackoffShortRetrySeconds (see
-    // polling_constants.h) for all initial retries.
-    BACKOFF_SHORT_INITIAL_RETRY_OVERRIDE
-  };
-
-  enum PreCommitUpdatesPolicy {
-    // By default, the server will enable or disable this experiment through the
-    // sync protocol's experiments data type.
-    SERVER_CONTROLLED_PRE_COMMIT_UPDATE_AVOIANCE,
-
-    // This flag overrides the server's decision and enables the pre-commit
-    // update avoidance experiment.
-    FORCE_ENABLE_PRE_COMMIT_UPDATE_AVOIDANCE,
-  };
-
-  // Configuration options for internal components. This struct is expected
-  // to grow and shrink over time with transient features / experiments,
-  // roughly following command line flags in chrome. Implementations of
-  // InternalComponentsFactory can use this information to build components
-  // with appropriate bells and whistles.
-  struct Switches {
-    EncryptionMethod encryption_method;
-    BackoffOverride backoff_override;
-    PreCommitUpdatesPolicy pre_commit_updates_policy;
-  };
-
-  // For selecting the types of storage to use to persist sync data when
-  // BuildDirectoryBackingStore() is called.
-  enum StorageOption {
-    // BuildDirectoryBackingStore should not use persistent on-disk storage.
-    STORAGE_IN_MEMORY,
-    // Use this if you want BuildDirectoryBackingStore to create/use a real
-    // on disk store.
-    STORAGE_ON_DISK,
-    // Use this to test the case where a directory fails to load.
-    STORAGE_INVALID
-  };
-
-  virtual ~InternalComponentsFactory() {}
-
-  virtual std::unique_ptr<SyncScheduler> BuildScheduler(
-      const std::string& name,
-      sessions::SyncSessionContext* context,
-      CancelationSignal* cancelation_signal) = 0;
-
-  virtual std::unique_ptr<sessions::SyncSessionContext> BuildContext(
-      ServerConnectionManager* connection_manager,
-      syncable::Directory* directory,
-      ExtensionsActivity* extensions_activity,
-      const std::vector<SyncEngineEventListener*>& listeners,
-      sessions::DebugInfoGetter* debug_info_getter,
-      ModelTypeRegistry* model_type_registry,
-      const std::string& invalidator_client_id) = 0;
-
-  virtual std::unique_ptr<syncable::DirectoryBackingStore>
-  BuildDirectoryBackingStore(StorageOption storage,
-                             const std::string& dir_name,
-                             const base::FilePath& backing_filepath) = 0;
-
-  // Returns the Switches struct that this object is using as configuration, if
-  // the implementation is making use of one.
-  virtual Switches GetSwitches() const = 0;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_INTERNAL_API_PUBLIC_INTERNAL_COMPONENTS_FACTORY_H_