[Offline pages] Removing undoing of deleting offline pages

components/offline_pages/offline_page_model.h

Index: components/offline_pages/offline_page_model.h
diff --git a/components/offline_pages/offline_page_model.h b/components/offline_pages/offline_page_model.h
index 1cf601ec5feb8803cdf97975567c5dba816360e6..439dc6bf5240d6a473460247f0307a6af4d8857a 100644
--- a/components/offline_pages/offline_page_model.h
+++ b/components/offline_pages/offline_page_model.h
@@ -158,12 +158,6 @@ class OfflinePageModel : public KeyedService, public base::SupportsUserData {
   // will be updated. Requires that the model is loaded.
   void MarkPageAccessed(int64_t offline_id);
 
-  // Marks that the offline page related to the passed |offline_id| was going
-  // to be deleted. The deletion will occur in a short while. The undo can be
-  // done before this. Requires that the model is loaded.
-  void MarkPageForDeletion(int64_t offline_id,
-                           const DeletePageCallback& callback);
-
   // Deletes an offline page related to the passed |offline_id|.
   void DeletePageByOfflineId(int64_t offline_id,
                              const DeletePageCallback& callback);
@@ -172,11 +166,6 @@ class OfflinePageModel : public KeyedService, public base::SupportsUserData {
   void DeletePagesByOfflineId(const std::vector<int64_t>& offline_ids,
                               const DeletePageCallback& callback);
 
-  // Marks pages for deletion. Actual delete is asynchronous.
-  // Works even if the model isn't loaded.
-  void MarkPagesForDeletion(const std::vector<int64_t>& offline_ids,
-                            const DeletePageCallback& callback);
-
   // Wipes out all the data by deleting all saved files and clearing the store.
   void ClearAll(const base::Closure& callback);
 
@@ -241,10 +230,6 @@ class OfflinePageModel : public KeyedService, public base::SupportsUserData {
                                int64_t free_space_bytes,
                                bool reporting_after_delete);
 
-  // Undo a deletion of a page.  Pages that are marked for deletion can
-  // be restored prior to when they are actually deleted.
-  void UndoPageDeletion(int64_t offline_id);
-
   // Methods for testing only:
   OfflinePageMetadataStore* GetStoreForTesting();
 
@@ -301,15 +286,6 @@ class OfflinePageModel : public KeyedService, public base::SupportsUserData {
   void OnMarkPageAccesseDone(const OfflinePageItem& offline_page_item,
                              bool success);
 
-  // Steps for marking an offline page for deletion that can be undone.
-  void OnMarkPageForDeletionDone(const OfflinePageItem& offline_page_item,
-                                 const DeletePageCallback& callback,
-                                 bool success);
-  void FinalizePageDeletion();
-
-  // Steps for undoing an offline page deletion.
-  void OnUndoOfflinePageDone(const OfflinePageItem& offline_page, bool success);
-
   // Callbacks for checking if offline pages are missing archive files.
   void OnFindPagesMissingArchiveFile(
       const std::vector<int64_t>* ids_of_pages_missing_archive_file);