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

sync/engine/sync_scheduler.h

Index: sync/engine/sync_scheduler.h
diff --git a/sync/engine/sync_scheduler.h b/sync/engine/sync_scheduler.h
deleted file mode 100644
index a2ed42ba872d8de4546d65f5bc912aca99e347f5..0000000000000000000000000000000000000000
--- a/sync/engine/sync_scheduler.h
+++ /dev/null
@@ -1,159 +0,0 @@
-// 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.
-//
-// A class to schedule syncer tasks intelligently.
-#ifndef SYNC_ENGINE_SYNC_SCHEDULER_H_
-#define SYNC_ENGINE_SYNC_SCHEDULER_H_
-
-#include <memory>
-#include <string>
-
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/time/time.h"
-#include "sync/base/sync_export.h"
-#include "sync/engine/nudge_source.h"
-#include "sync/internal_api/public/base/invalidation_interface.h"
-#include "sync/sessions/sync_session.h"
-
-namespace tracked_objects {
-class Location;
-}  // namespace tracked_objects
-
-namespace syncer {
-
-struct ServerConnectionEvent;
-
-struct SYNC_EXPORT ConfigurationParams {
-  ConfigurationParams();
-  ConfigurationParams(
-      const sync_pb::GetUpdatesCallerInfo::GetUpdatesSource& source,
-      ModelTypeSet types_to_download,
-      const ModelSafeRoutingInfo& routing_info,
-      const base::Closure& ready_task,
-      const base::Closure& retry_task);
-  ConfigurationParams(const ConfigurationParams& other);
-  ~ConfigurationParams();
-
-  // Source for the configuration.
-  sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source;
-  // The types that should be downloaded.
-  ModelTypeSet types_to_download;
-  // The new routing info (superset of types to be downloaded).
-  ModelSafeRoutingInfo routing_info;
-  // Callback to invoke on configuration completion.
-  base::Closure ready_task;
-  // Callback to invoke on configuration failure.
-  base::Closure retry_task;
-};
-
-struct SYNC_EXPORT ClearParams {
-  explicit ClearParams(const base::Closure& report_success_task);
-  ClearParams(const ClearParams& other);
-  ~ClearParams();
-
-  // Callback to invoke on successful completion.
-  base::Closure report_success_task;
-};
-
-class SYNC_EXPORT SyncScheduler : public sessions::SyncSession::Delegate {
- public:
-  enum Mode {
-    // In this mode, the thread only performs configuration tasks.  This is
-    // designed to make the case where we want to download updates for a
-    // specific type only, and not continue syncing until we are moved into
-    // normal mode.
-    CONFIGURATION_MODE,
-    // This mode is used to issue a clear server data command.  The scheduler
-    // may only transition to this mode from the CONFIGURATION_MODE.  When in
-    // this mode, the only schedulable operation is |SchedulerClearServerData|.
-    CLEAR_SERVER_DATA_MODE,
-    // Resumes polling and allows nudges, drops configuration tasks.  Runs
-    // through entire sync cycle.
-    NORMAL_MODE,
-  };
-
-  // All methods of SyncScheduler must be called on the same thread
-  // (except for RequestEarlyExit()).
-
-  SyncScheduler();
-  ~SyncScheduler() override;
-
-  // Start the scheduler with the given mode.  If the scheduler is
-  // already started, switch to the given mode, although some
-  // scheduled tasks from the old mode may still run. |last_poll_time| will
-  // be used to decide what the poll timer should be initialized with.
-  virtual void Start(Mode mode, base::Time last_poll_time) = 0;
-
-  // Schedules the configuration task specified by |params|. Returns true if
-  // the configuration task executed immediately, false if it had to be
-  // scheduled for a later attempt. |params.ready_task| is invoked whenever the
-  // configuration task executes. |params.retry_task| is invoked once if the
-  // configuration task could not execute. |params.ready_task| will still be
-  // called when configuration finishes.
-  // Note: must already be in CONFIGURATION mode.
-  virtual void ScheduleConfiguration(const ConfigurationParams& params) = 0;
-
-  // Schedules clear of server data in preparation for transitioning to
-  // passphrase encryption. The scheduler must be in CLEAR_SERVER_DATA_MODE
-  // before calling this method.
-  virtual void ScheduleClearServerData(const ClearParams& params) = 0;
-
-  // Request that the syncer avoid starting any new tasks and prepare for
-  // shutdown.
-  virtual void Stop() = 0;
-
-  // The meat and potatoes. All three of the following methods will post a
-  // delayed task to attempt the actual nudge (see ScheduleNudgeImpl).
-  //
-  // NOTE: |desired_delay| is best-effort. If a nudge is already scheduled to
-  // depart earlier than Now() + delay, the scheduler can and will prefer to
-  // batch the two so that only one nudge is sent (at the earlier time). Also,
-  // as always with delayed tasks and timers, it's possible the task gets run
-  // any time after |desired_delay|.
-
-  // The LocalNudge indicates that we've made a local change, and that the
-  // syncer should plan to commit this to the server some time soon.
-  virtual void ScheduleLocalNudge(
-      ModelTypeSet types,
-      const tracked_objects::Location& nudge_location) = 0;
-
-  // The LocalRefreshRequest occurs when we decide for some reason to manually
-  // request updates.  This should be used sparingly.  For example, one of its
-  // uses is to fetch the latest tab sync data when it's relevant to the UI on
-  // platforms where tab sync is not registered for invalidations.
-  virtual void ScheduleLocalRefreshRequest(
-      ModelTypeSet types,
-      const tracked_objects::Location& nudge_location) = 0;
-
-  // Invalidations are notifications the server sends to let us know when other
-  // clients have committed data.  We need to contact the sync server (being
-  // careful to pass along the "hints" delivered with those invalidations) in
-  // order to fetch the update.
-  virtual void ScheduleInvalidationNudge(
-      syncer::ModelType type,
-      std::unique_ptr<InvalidationInterface> invalidation,
-      const tracked_objects::Location& nudge_location) = 0;
-
-  // Requests a non-blocking initial sync request for the specified type.
-  //
-  // Many types can only complete initial sync while the scheduler is in
-  // configure mode, but a few of them are able to perform their initial sync
-  // while the scheduler is in normal mode.  This non-blocking initial sync
-  // can be requested through this function.
-  virtual void ScheduleInitialSyncNudge(syncer::ModelType model_type) = 0;
-
-  // Change status of notifications in the SyncSessionContext.
-  virtual void SetNotificationsEnabled(bool notifications_enabled) = 0;
-
-  // Called when credentials are updated by the user.
-  virtual void OnCredentialsUpdated() = 0;
-
-  // Called when the network layer detects a connection status change.
-  virtual void OnConnectionStatusChange() = 0;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_ENGINE_SYNC_SCHEDULER_H_