A handful of nits found while working on blobs.

content/browser/indexed_db/indexed_db_index_writer.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_INDEX_WRITER_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 41 matching lines @@
                         int64 index_id,
                         const IndexedDBKey& index_key,
                         const IndexedDBKey& primary_key,
                         bool* allowed) const WARN_UNUSED_RESULT;
 
   const IndexedDBIndexMetadata index_metadata_;
   IndexedDBDatabase::IndexKeys index_keys_;
 };
 
 bool MakeIndexWriters(
-    scoped_refptr<IndexedDBTransaction> transaction,
+    IndexedDBTransaction* transaction,
     IndexedDBBackingStore* store,
     int64 database_id,
     const IndexedDBObjectStoreMetadata& metadata,
     const IndexedDBKey& primary_key,
     bool key_was_generated,
     const std::vector<IndexedDBDatabase::IndexKeys>& index_keys,
     ScopedVector<IndexWriter>* index_writers,
     base::string16* error_message,
     bool* completed) WARN_UNUSED_RESULT;
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_