IndexedDB: Decode correct int type for database name->id map

content/browser/indexed_db/indexed_db_leveldb_coding.cc

 // 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.
 
 #include "content/browser/indexed_db/indexed_db_leveldb_coding.h"
 
 #include <iterator>
 #include <limits>
 
 #include "base/logging.h"
@@ skipping 36 matching lines @@
 // <0, 0, 0, 3>
 //   => Blob journal
 //     The format of the journal is:
 //         {database_id (var int), blobKey (var int)}*.
 //     If the blobKey is kAllBlobsKey, the whole database should be deleted.
 //     [BlobJournalKey]
 // <0, 0, 0, 4> => Live blob journal; same format. [LiveBlobJournalKey]
 // <0, 0, 0, 100, database id>
 //   => Existence implies the database id is in the free list
 //      [DatabaseFreeListKey]
-// <0, 0, 0, 201, origin, database name> => Database id [DatabaseNameKey]
+// <0, 0, 0, 201, origin, database name> => Database id (int) [DatabaseNameKey]
 //
 //
 // Database metadata: [DatabaseMetaDataKey]
 // ----------------------------------------
 // The prefix is <database id, 0, 0> followed by a metadata type byte:
 //
 // <database id, 0, 0, 0> => origin name
 // <database id, 0, 0, 1> => database name
 // <database id, 0, 0, 2> => IDB string version data (obsolete)
 // <database id, 0, 0, 3> => maximum allocated object store id
@@ skipping 1962 matching lines @@
 scoped_ptr<IndexedDBKey> IndexDataKey::primary_key() const {
   scoped_ptr<IndexedDBKey> key;
   StringPiece slice(encoded_primary_key_);
   if (!DecodeIDBKey(&slice, &key)) {
     // TODO(jsbell): Return error.
   }
   return key.Pass();
 }
 
 }  // namespace content