Reading List create protobuf store

ios/chrome/browser/reading_list/reading_list_model_impl.h

Index: ios/chrome/browser/reading_list/reading_list_model_impl.h
diff --git a/ios/chrome/browser/reading_list/reading_list_model_impl.h b/ios/chrome/browser/reading_list/reading_list_model_impl.h
index d185c5193618190144f0d2e3de6541d1e11aaa52..e722d69aa0a65cb7dab0fe85f5148233fdbf6c23 100644
--- a/ios/chrome/browser/reading_list/reading_list_model_impl.h
+++ b/ios/chrome/browser/reading_list/reading_list_model_impl.h
@@ -12,13 +12,17 @@
 #include "ios/chrome/browser/reading_list/reading_list_model.h"
 
 class ReadingListModelStorage;
+class PrefService;
+
+using ReadingListEntries = std::vector<ReadingListEntry>;
 
 // Concrete implementation of a reading list model using in memory lists.
 class ReadingListModelImpl : public ReadingListModel, public KeyedService {
  public:
   // Initialize a ReadingListModelImpl to load and save data in
   // |persistence_layer|.
-  ReadingListModelImpl(std::unique_ptr<ReadingListModelStorage> storage_layer);
+  ReadingListModelImpl(std::unique_ptr<ReadingListModelStorage> storage_layer,
+                       PrefService* pref_service);
 
   // Initialize a ReadingListModelImpl without persistence. Data will not be
   // persistent across sessions.
@@ -57,18 +61,24 @@ class ReadingListModelImpl : public ReadingListModel, public KeyedService {
       const GURL& url,
       ReadingListEntry::DistillationState state) override;
 
+  virtual void ModelLoaded(std::unique_ptr<ReadingListEntries> unread,
+                           std::unique_ptr<ReadingListEntries> read);
+
  protected:
-  void EndBatchUpdates() override;
+  void EnteringBatchUpdates() override;
+  void LeavingBatchUpdates() override;
 
  private:
-  typedef std::vector<ReadingListEntry> ReadingListEntries;
-
-  ReadingListEntries unread_;
-  ReadingListEntries read_;
-  std::unique_ptr<ReadingListModelStorage> storageLayer_;
-  bool hasUnseen_;
+  void SavePersistentHasUnseen(bool has_unseen);
+  bool LoadPersistentHasUnseen();
+
+  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);
 };