Reading List iOS: Use external clock in ReadingListEntry.

components/reading_list/ios/reading_list_store.h

 // 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_IOS_READING_LIST_STORE_H_
 #define COMPONENTS_READING_LIST_IOS_READING_LIST_STORE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 17 matching lines @@
 
  public:
   ReadingListStore(StoreFactoryFunction create_store_callback,
                    const ChangeProcessorFactory& change_processor_factory);
   ~ReadingListStore() override;
 
   std::unique_ptr<ScopedBatchUpdate> EnsureBatchCreated() override;
 
   // ReadingListModelStorage implementation
   void SetReadingListModel(ReadingListModel* model,
-                           ReadingListStoreDelegate* delegate) override;
+                           ReadingListStoreDelegate* delegate,
+                           base::Clock* clock) override;
 
   void SaveEntry(const ReadingListEntry& entry) override;
   void RemoveEntry(const ReadingListEntry& entry) override;
 
   // Creates an object used to communicate changes in the sync metadata to the
   // model type store.
   std::unique_ptr<syncer::MetadataChangeList> CreateMetadataChangeList()
       override;
 
   // Perform the initial merge between local and sync data. This should only be
@@ skipping 108 matching lines @@
   void AddEntryToBatch(syncer::MutableDataBatch* batch,
                        const ReadingListEntry& entry);
 
   std::unique_ptr<syncer::ModelTypeStore> store_;
   ReadingListModel* model_;
   ReadingListStoreDelegate* delegate_;
   StoreFactoryFunction create_store_callback_;
 
   int pending_transaction_count_;
   std::unique_ptr<syncer::ModelTypeStore::WriteBatch> batch_;
+
+  base::Clock* clock_;
+
+  DISALLOW_COPY_AND_ASSIGN(ReadingListStore);
 };
 
 #endif  // COMPONENTS_READING_LIST_IOS_READING_LIST_STORE_H_