Introduce a layering in the invalidation component as public and impl

components/invalidation/mock_ack_handler.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 COMPONENTS_INVALIDATION_MOCK_ACK_HANDLER_H_
-#define COMPONENTS_INVALIDATION_MOCK_ACK_HANDLER_H_
-
-#include <map>
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
-#include "components/invalidation/ack_handler.h"
-#include "components/invalidation/invalidation_export.h"
-#include "components/invalidation/invalidation_util.h"
-
-namespace syncer {
-
-class Invalidation;
-
-// This AckHandler implementation colaborates with the FakeInvalidationService
-// to enable unit tests to assert that invalidations are being acked properly.
-class INVALIDATION_EXPORT MockAckHandler
-  : public AckHandler,
-    public base::SupportsWeakPtr<MockAckHandler> {
- public:
-  MockAckHandler();
-  ~MockAckHandler() override;
-
-  // Sets up some internal state to track this invalidation, and modifies it so
-  // that its Acknowledge() and Drop() methods will route back to us.
-  void RegisterInvalidation(Invalidation* invalidation);
-
-  // No one was listening for this invalidation, so no one will receive it or
-  // ack it.  We keep track of it anyway to let tests make assertions about it.
-  void RegisterUnsentInvalidation(Invalidation* invalidation);
-
-  // Returns true if the specified invalidaition has been delivered, but has not
-  // been acknowledged yet.
-  bool IsUnacked(const Invalidation& invalidation) const;
-
-  // Returns true if the specified invalidation has been delivered and
-  // acknowledged.
-  bool IsAcknowledged(const Invalidation& invalidation) const;
-
-  // Returns true if the specified invalidation has been delivered and
-  // dropped.
-  bool IsDropped(const Invalidation& invalidation) const;
-
-  // Returns true if the specified invalidation was never delivered.
-  bool IsUnsent(const Invalidation& invalidation) const;
-
-  // Retruns true if all invalidations have been acked and all drops recovered.
-  bool AllInvalidationsAccountedFor() const;
-
-  // Implementation of AckHandler.
-  void Acknowledge(const invalidation::ObjectId& id,
-                   const AckHandle& handle) override;
-  void Drop(const invalidation::ObjectId& id, const AckHandle& handle) override;
-
- private:
-  typedef std::vector<syncer::Invalidation> InvalidationVector;
-  typedef std::map<invalidation::ObjectId,
-                   AckHandle,
-                   ObjectIdLessThan> IdHandleMap;
-
-  InvalidationVector unsent_invalidations_;
-  InvalidationVector unacked_invalidations_;
-  InvalidationVector acked_invalidations_;
-  InvalidationVector dropped_invalidations_;
-
-  IdHandleMap unrecovered_drop_events_;
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_INVALIDATION_MOCK_ACK_HANDLER_H_