[Offline pages] Preventing GetPagesMatchingQuery from running before model is loaded

components/offline_pages/offline_page_model_impl.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_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 111 matching lines @@
   OfflinePageModelImpl();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(OfflinePageModelImplTest, MarkPageForDeletion);
 
   typedef ScopedVector<OfflinePageArchiver> PendingArchivers;
 
   // Callback for ensuring archive directory is created.
   void OnEnsureArchivesDirCreatedDone(const base::TimeTicks& start_time);
 
-  void CheckPagesExistOfflineAfterLoadDone(
-      const std::set<GURL>& urls,
-      const CheckPagesExistOfflineCallback& callback);
+  void GetPagesMatchingQueryWhenLoadDone(
+      std::unique_ptr<OfflinePageModelQuery> query,
+      const MultipleOfflinePageItemCallback& callback);
   void GetOfflineIdsForClientIdWhenLoadDone(
       const ClientId& client_id,
       const MultipleOfflineIdCallback& callback) const;
-  void GetPageByOfflineIdWhenLoadDone(
-      int64_t offline_id,
-      const SingleOfflinePageItemCallback& callback) const;
   const std::vector<int64_t> MaybeGetOfflineIdsForClientId(
       const ClientId& client_id) const;
   void GetPagesByURLWhenLoadDone(
       const GURL& url,
       URLSearchMode url_search_mode,
       const MultipleOfflinePageItemCallback& callback) const;
   void MarkPageAccessedWhenLoadDone(int64_t offline_id);
 
   void CheckMetadataConsistency();
 
@@ skipping 143 matching lines @@
   base::Clock* testing_clock_;
 
   base::WeakPtrFactory<OfflinePageModelImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageModelImpl);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_