[Offline pages] Resetting offline page metadata store if initial load fails

components/offline_pages/offline_page_metadata_store_sql.h

Index: components/offline_pages/offline_page_metadata_store_sql.h
diff --git a/components/offline_pages/offline_page_metadata_store_sql.h b/components/offline_pages/offline_page_metadata_store_sql.h
index c26cae8fb3e6653ee5f3224d2cda2cc55115607c..54bbe00925e431829351abad35aaac2de9c75b1d 100644
--- a/components/offline_pages/offline_page_metadata_store_sql.h
+++ b/components/offline_pages/offline_page_metadata_store_sql.h
@@ -58,7 +58,7 @@ class OfflinePageMetadataStoreSQL : public OfflinePageMetadataStore {
   ~OfflinePageMetadataStoreSQL() override;
 
   // Implementation methods.
-  void GetOfflinePages(const LoadCallback& callback) override;
+  void GetOfflinePages(const GetOfflinePagesCallback& callback) override;
   void AddOfflinePage(const OfflinePageItem& offline_page,
                       const AddCallback& callback) override;
   void UpdateOfflinePages(const std::vector<OfflinePageItem>& pages,
@@ -80,9 +80,7 @@ class OfflinePageMetadataStoreSQL : public OfflinePageMetadataStore {
   void OnResetDone(const ResetCallback& callback, StoreState state);
 
   // Helper function that checks whether a valid DB connection is present.
-  // Returns true if valid connection is present, otherwise it returns false and
-  // calls the provided callback as a shortcut.
-  bool CheckDb(const base::Closure& callback);
+  bool CheckStoreState();
 
   // Background thread where all SQL access should be run.
   scoped_refptr<base::SequencedTaskRunner> background_task_runner_;