[sql] Remove misleading AutoRecoverTable() parameter.

components/history/core/browser/top_sites_database.cc

 // Copyright (c) 2012 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.
 
 #include "components/history/core/browser/top_sites_database.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 259 matching lines @@
     //
     // What are the potential responses, even?  The recovery database could be
     // opened as in-memory.  If the temp database had a filesystem problem and
     // the temp filesystem differs from the main database, then that could fix
     // it.
     sql::Recovery::Rollback(std::move(recovery));
     RecordRecoveryEvent(RECOVERY_EVENT_FAILED_SCHEMA_INIT);
     return;
   }
 
-  // The |1| is because v2 [thumbnails] has one less column than v3 did.  In the
-  // v2 case the column will get default values.
-  if (!recovery->AutoRecoverTable("thumbnails", 1, &thumbnails_recovered)) {
+  // In the v2 case the missing column will get default values.
+  if (!recovery->AutoRecoverTable("thumbnails", &thumbnails_recovered)) {
     sql::Recovery::Rollback(std::move(recovery));
     RecordRecoveryEvent(RECOVERY_EVENT_FAILED_AUTORECOVER_THUMBNAILS);
     return;
   }
 
   // TODO(shess): Inline this?
   FixThumbnailsTable(recovery->db());
 
   if (!sql::Recovery::Recovered(std::move(recovery))) {
     // TODO(shess): Very unclear what this failure would actually mean, and what
@@ skipping 434 matching lines @@
   db->set_error_callback(base::Bind(&DatabaseErrorCallback, db.get(), db_name));
   db->set_page_size(4096);
   db->set_cache_size(32);
 
   if (!db->Open(db_name))
     return NULL;
   return db.release();
 }
 
 }  // namespace history