Histogram versions and extended error codes for SQLite databases.

chrome/browser/history/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 "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/string_util.h"
 #include "base/strings/string_split.h"
 #include "chrome/browser/diagnostics/sqlite_diagnostics.h"
 #include "chrome/browser/history/history_types.h"
@@ skipping 356 matching lines @@
 
   if (!delete_statement.Run())
     return false;
 
   return transaction.Commit();
 }
 
 sql::Connection* TopSitesDatabase::CreateDB(const base::FilePath& db_name) {
   scoped_ptr<sql::Connection> db(new sql::Connection());
   // Settings copied from ThumbnailDatabase.
-  db->set_error_histogram_name("Sqlite.Thumbnail.Error");
+  db->set_histogram_tag("TopSites");
   db->set_page_size(4096);
   db->set_cache_size(32);
 
   if (!db->Open(db_name)) {
     LOG(ERROR) << db->GetErrorMessage();
     return NULL;
   }
 
   return db.release();
 }
 
 }  // namespace history