Enable RL sync by default on iOS

components/reading_list/reading_list_model_impl.h

Index: components/reading_list/reading_list_model_impl.h
diff --git a/components/reading_list/reading_list_model_impl.h b/components/reading_list/reading_list_model_impl.h
deleted file mode 100644
index b983c2e698b8faa3fd1422bc348505c0aa82ab60..0000000000000000000000000000000000000000
--- a/components/reading_list/reading_list_model_impl.h
+++ /dev/null
@@ -1,139 +0,0 @@
-// Copyright 2016 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_READING_LIST_READING_LIST_MODEL_IMPL_H_
-#define COMPONENTS_READING_LIST_READING_LIST_MODEL_IMPL_H_
-
-#include <memory>
-
-#include "components/keyed_service/core/keyed_service.h"
-#include "components/reading_list/reading_list_entry.h"
-#include "components/reading_list/reading_list_model.h"
-#include "components/reading_list/reading_list_model_storage.h"
-#include "components/reading_list/reading_list_store_delegate.h"
-
-class PrefService;
-
-// Concrete implementation of a reading list model using in memory lists.
-class ReadingListModelImpl : public ReadingListModel,
-                             public ReadingListStoreDelegate,
-                             public KeyedService {
- public:
-  // Initialize a ReadingListModelImpl to load and save data in
-  // |persistence_layer|.
-  ReadingListModelImpl(std::unique_ptr<ReadingListModelStorage> storage_layer,
-                       PrefService* pref_service);
-
-  // Initialize a ReadingListModelImpl without persistence. Data will not be
-  // persistent across sessions.
-  ReadingListModelImpl();
-
-  syncer::ModelTypeSyncBridge* GetModelTypeSyncBridge() override;
-
-  ~ReadingListModelImpl() override;
-
-  void StoreLoaded(std::unique_ptr<ReadingListEntries> unread,
-                   std::unique_ptr<ReadingListEntries> read) override;
-
-  // KeyedService implementation.
-  void Shutdown() override;
-
-  // ReadingListModel implementation.
-  bool loaded() const override;
-
-  size_t unread_size() const override;
-  size_t read_size() const override;
-
-  bool HasUnseenEntries() const override;
-  void ResetUnseenEntries() override;
-
-  const ReadingListEntry& GetUnreadEntryAtIndex(size_t index) const override;
-  const ReadingListEntry& GetReadEntryAtIndex(size_t index) const override;
-
-  const ReadingListEntry* GetEntryFromURL(const GURL& gurl,
-                                          bool* read) const override;
-
-  bool CallbackEntryURL(
-      const GURL& url,
-      base::Callback<void(const ReadingListEntry&)> callback) const override;
-
-  void RemoveEntryByURL(const GURL& url) override;
-
-  const ReadingListEntry& AddEntry(const GURL& url,
-                                   const std::string& title) override;
-
-  void MarkReadByURL(const GURL& url) override;
-  void MarkUnreadByURL(const GURL& url) override;
-
-  void SetEntryTitle(const GURL& url, const std::string& title) override;
-  void SetEntryDistilledPath(const GURL& url,
-                             const base::FilePath& distilled_path) override;
-  void SetEntryDistilledState(
-      const GURL& url,
-      ReadingListEntry::DistillationState state) override;
-
-  void SyncAddEntry(std::unique_ptr<ReadingListEntry> entry,
-                    bool read) override;
-  ReadingListEntry* SyncMergeEntry(std::unique_ptr<ReadingListEntry> entry,
-                                   bool read) override;
-  void SyncRemoveEntry(const GURL& url) override;
-
-  std::unique_ptr<ReadingListModel::ScopedReadingListBatchUpdate>
-  CreateBatchToken() override;
-
-  // Helper class that is used to scope batch updates.
-  class ScopedReadingListBatchUpdate
-      : public ReadingListModel::ScopedReadingListBatchUpdate {
-   public:
-    explicit ScopedReadingListBatchUpdate(ReadingListModelImpl* model);
-
-    ~ScopedReadingListBatchUpdate() override;
-
-   private:
-    std::unique_ptr<ReadingListModelStorage::ScopedBatchUpdate> storage_token_;
-
-    DISALLOW_COPY_AND_ASSIGN(ScopedReadingListBatchUpdate);
-  };
-
- protected:
-  void EnteringBatchUpdates() override;
-  void LeavingBatchUpdates() override;
-
- private:
-  // Sets/Loads the pref flag that indicate if some entries have never been seen
-  // since being added to the store.
-  void SetPersistentHasUnseen(bool has_unseen);
-  bool GetPersistentHasUnseen();
-
-  // Returns a mutable pointer to the entry with URL |gurl|. Return nullptr if
-  // no entry is found. If an entry is found, |read| is set to the read status
-  // of the entry.
-  ReadingListEntry* GetMutableEntryFromURL(const GURL& gurl, bool* read) const;
-
-  // Sorts the entries in |read_| and |unread_| according to their |UpdateTime|.
-  void SortEntries();
-
-  // Returns the |storage_layer_| of the model.
-  ReadingListModelStorage* StorageLayer();
-
-  // Remove |entry| from the |entries| vector and calls the Move notifications
-  // on observers.
-  void MoveEntryFrom(ReadingListEntries* entries,
-                     const ReadingListEntry& entry,
-                     bool read);
-
-  // Remove entry |url| and propagate to store if |from_sync| is false.
-  void RemoveEntryByURLImpl(const GURL& url, bool from_sync);
-
-  std::unique_ptr<ReadingListEntries> unread_;
-  std::unique_ptr<ReadingListEntries> read_;
-  std::unique_ptr<ReadingListModelStorage> storage_layer_;
-  PrefService* pref_service_;
-  bool has_unseen_;
-  bool loaded_;
-  base::WeakPtrFactory<ReadingListModelImpl> weak_ptr_factory_;
-  DISALLOW_COPY_AND_ASSIGN(ReadingListModelImpl);
-};
-
-#endif  // COMPONENTS_READING_LIST_READING_LIST_MODEL_IMPL_H_