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

sync/test/mock_invalidation_tracker.h

-// Copyright 2014 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 SYNC_TEST_MOCK_INVALIDATION_TRACKER_H_
-#define SYNC_TEST_MOCK_INVALIDATION_TRACKER_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <set>
-#include <string>
-
-#include "sync/test/trackable_mock_invalidation.h"
-
-namespace syncer {
-
-// Instantiates and track the acknowledgement state of
-// TrackableMockInvalidations.
-class MockInvalidationTracker {
- public:
-  // Builers to return new TrackableMockInvalidations associated with this
-  // object.
-  std::unique_ptr<TrackableMockInvalidation> IssueUnknownVersionInvalidation();
-  std::unique_ptr<TrackableMockInvalidation> IssueInvalidation(
-      int64_t version,
-      const std::string& payload);
-
-  MockInvalidationTracker();
-  ~MockInvalidationTracker();
-
-  // Records the acknowledgement of the invalidation
-  // specified by the given ID.
-  void Acknowledge(int invaliation_id);
-
-  // Records the drop of the invalidation specified by the given ID.
-  void Drop(int invalidation_id);
-
-  // Returns true if the invalidation associated with the given ID is neither
-  // acknowledged nor dropped.
-  bool IsUnacked(int invalidation_id) const;
-
-  // Returns true if the invalidation associated with the given ID is
-  // acknowledged.
-  bool IsAcknowledged(int invalidation_id) const;
-
-  // Returns true if the invalidation associated with the given ID is dropped.
-  bool IsDropped(int invalidation_id) const;
-
-  // Returns true if all issued invalidations were acknowledged or dropped.
-  bool AllInvalidationsAccountedFor() const;
-
- private:
-  // A counter used to assign strictly increasing IDs to each invalidation
-  // issued by this class.
-  int next_id_;
-
-  // Acknowledgements and drops are tracked by adding the IDs for the
-  // acknowledged or dropped items to the proper set.  An invalidation may be
-  // both dropped and acknowledged if it represents the recovery from a drop
-  // event.
-  std::set<int> dropped_;
-  std::set<int> acknowledged_;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_TEST_MOCK_INVALIDATION_TRACKER_H_