Offline Pages: Removes the metadata consistency check from the model API.

components/offline_pages/offline_page_model.h

 // Copyright 2015 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_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 150 matching lines @@
   // Returns the offline pages that are stored under |online_url|.
   virtual void GetPagesByOnlineURL(
       const GURL& online_url,
       const MultipleOfflinePageItemCallback& callback) = 0;
 
   // Returns an offline page saved for |online_url|. A nullptr is returned if
   // not found.  See |GetBestPageForOnlineURL| for selection criteria.
   virtual const OfflinePageItem* MaybeGetBestPageForOnlineURL(
       const GURL& online_url) const = 0;
 
-  // Checks that all of the offline pages have corresponding offline copies,
-  // and all archived files have offline pages pointing to them.
-  // If a page is discovered to be missing an offline copy, its offline page
-  // metadata will be expired. If an archive file is discovered missing its
-  // offline page, it will be deleted.
-  virtual void CheckMetadataConsistency() = 0;
-
   // Marks pages with |offline_ids| as expired and deletes the associated
   // archive files.
   virtual void ExpirePages(const std::vector<int64_t>& offline_ids,
                            const base::Time& expiration_time,
                            const base::Callback<void(bool)>& callback) = 0;
 
   // Returns the policy controller.
   virtual ClientPolicyController* GetPolicyController() = 0;
 
   // TODO(dougarnett): Remove this and its uses.
   virtual bool is_loaded() const = 0;
 
   // Returns the logger. Ownership is retained by the model.
   virtual OfflineEventLogger* GetLogger() = 0;
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_