Revert of Move some sync/notifier to components/invalidation

components/invalidation/fake_invalidation_state_tracker.h

-// 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.
-
-#ifndef COMPONENTS_INVALIDATION_FAKE_INVALIDATION_STATE_TRACKER_H_
-#define COMPONENTS_INVALIDATION_FAKE_INVALIDATION_STATE_TRACKER_H_
-
-#include "base/memory/weak_ptr.h"
-#include "sync/notifier/invalidation_state_tracker.h"
-
-namespace syncer {
-
-// InvalidationStateTracker implementation that simply keeps track of
-// the max versions and invalidation state in memory.
-class FakeInvalidationStateTracker
-    : public InvalidationStateTracker,
-      public base::SupportsWeakPtr<FakeInvalidationStateTracker> {
- public:
-  FakeInvalidationStateTracker();
-  virtual ~FakeInvalidationStateTracker();
-
-  // InvalidationStateTracker implementation.
-  virtual void ClearAndSetNewClientId(const std::string& client_id) OVERRIDE;
-  virtual std::string GetInvalidatorClientId() const OVERRIDE;
-  virtual void SetBootstrapData(const std::string& data) OVERRIDE;
-  virtual std::string GetBootstrapData() const OVERRIDE;
-  virtual void SetSavedInvalidations(
-      const UnackedInvalidationsMap& states) OVERRIDE;
-  virtual UnackedInvalidationsMap GetSavedInvalidations() const OVERRIDE;
-  virtual void Clear() OVERRIDE;
-
-  static const int64 kMinVersion;
-
- private:
-  std::string invalidator_client_id_;
-  std::string bootstrap_data_;
-  UnackedInvalidationsMap unacked_invalidations_map_;
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_INVALIDATION_FAKE_INVALIDATION_STATE_TRACKER_H_