sql::MetaTable.next_download_id, DownloadManager::GetNextId()

content/browser/download/download_id.cc

Index: content/browser/download/download_id.cc
diff --git a/content/browser/download/download_id.cc b/content/browser/download/download_id.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bef4964b39d22b2114e17a51480a4f9a22759120
--- /dev/null
+++ b/content/browser/download/download_id.cc
@@ -0,0 +1,9 @@
+// Copyright (c) 2011 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/download/download_id.h"
+
+std::ostream& operator<<(std::ostream& out, const DownloadId& global_id) {
+  return out << global_id.manager_ << ":" << global_id.local();
+}