[Offline pages] Resetting offline page metadata store to handle LOAD/INIT failures

components/offline_pages/offline_page_model_impl.h

Index: components/offline_pages/offline_page_model_impl.h
diff --git a/components/offline_pages/offline_page_model_impl.h b/components/offline_pages/offline_page_model_impl.h
index bb5c972ca66d5eaa75c96dd20af78925cd14d9e0..3341cc4805ec89d9fed62590f9265641fb6acfba 100644
--- a/components/offline_pages/offline_page_model_impl.h
+++ b/components/offline_pages/offline_page_model_impl.h
@@ -150,9 +150,15 @@ class OfflinePageModelImpl : public OfflinePageModel, public KeyedService {
   void CheckMetadataConsistency();
 
   // Callback for loading pages from the offline page metadata store.
+  void OnStoreInitialized(const base::TimeTicks& start_time,
+                          int reset_attempts_left,
+                          bool success);
+  void OnStoreResetDone(const base::TimeTicks& start_time,
+                        int reset_attempts_left,
+                        bool success);
   void OnLoadDone(const base::TimeTicks& start_time,
-                  OfflinePageMetadataStore::LoadStatus load_status,
                   const std::vector<OfflinePageItem>& offline_pages);
+  void CompleteLoad();
 
   // Steps for saving a page offline.
   void OnCreateArchiveDone(const GURL& requested_url,
@@ -242,7 +248,7 @@ class OfflinePageModelImpl : public OfflinePageModel, public KeyedService {
                         OfflinePageStorageManager::ClearStorageResult result);
 
   // Post task to clear storage.
-  void PostClearStorageIfNeededTask();
+  void PostClearStorageIfNeededTask(bool delayed);
 
   // Check if |offline_page| should be removed on cache reset by user.
   bool IsRemovedOnCacheReset(const OfflinePageItem& offline_page) const;