Remove dead code from IDB (chromium side)

content/browser/indexed_db/indexed_db_backing_store.h

 // Copyright (c) 2013 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 60 matching lines @@
       LevelDBFactory* factory);
 
   virtual std::vector<string16> GetDatabaseNames();
   virtual bool GetIDBDatabaseMetaData(const string16& name,
                                       IndexedDBDatabaseMetadata* metadata,
                                       bool* success) WARN_UNUSED_RESULT;
   virtual bool CreateIDBDatabaseMetaData(const string16& name,
                                          const string16& version,
                                          int64 int_version,
                                          int64* row_id);
-  virtual bool UpdateIDBDatabaseMetaData(
-      IndexedDBBackingStore::Transaction* transaction,
-      int64 row_id,
-      const string16& version);
   virtual bool UpdateIDBDatabaseIntVersion(
       IndexedDBBackingStore::Transaction* transaction,
       int64 row_id,
       int64 int_version);
   virtual bool DeleteDatabase(const string16& name);
 
   bool GetObjectStores(int64 database_id,
                        IndexedDBDatabaseMetadata::ObjectStoreMap* map)
       WARN_UNUSED_RESULT;
   virtual bool CreateObjectStore(
@@ skipping 234 matching lines @@
   const std::string origin_identifier_;
 
   scoped_ptr<LevelDBDatabase> db_;
   scoped_ptr<LevelDBComparator> comparator_;
   base::OneShotTimer<IndexedDBBackingStore> close_timer_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_