[Offline pages] Moving disk size related calls to Archive Manager, reorganizing UMA

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 <map>
@@ skipping 195 matching lines @@
   // not found.  See |GetBestPageForOnlineURL| for selection criteria.
   const OfflinePageItem* MaybeGetBestPageForOnlineURL(
       const GURL& online_url) const;
 
   // Checks that all of the offline pages have corresponding offline copies.
   // If a page is discovered to be missing an offline copy, its offline page
   // metadata will be removed and |OfflinePageDeleted| will be sent to model
   // observers.
   void CheckForExternalFileDeletion();
 
-  // Reports the storage histograms related to total size of all stored offline
-  // pages. Method is to be called after a page was saved or some pages are
-  // deleted. In the latter case |reporting_after_delete| is set to true.
-  // Caller is supposed to provide the current |total_space_bytes| on drive
-  // where the pages are stored, as well as |free_space_bytes| after the
-  // operation was taken. The method will report total size of all pages, and
-  // percentage of size of pages as compared to total space and free space.
-  void RecordStorageHistograms(int64_t total_space_bytes,
-                               int64_t free_space_bytes,
-                               bool reporting_after_delete);
-
   // Returns the policy controller.
   ClientPolicyController* GetPolicyController();
 
   // Methods for testing only:
   OfflinePageMetadataStore* GetStoreForTesting();
 
   OfflinePageStorageManager* GetStorageManager();
 
   bool is_loaded() const;
 
@@ skipping 134 matching lines @@
   std::unique_ptr<ArchiveManager> archive_manager_;
 
   base::WeakPtrFactory<OfflinePageModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageModel);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_