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

chrome/browser/history/history_backend.cc

Index: chrome/browser/history/history_backend.cc
diff --git a/chrome/browser/history/history_backend.cc b/chrome/browser/history/history_backend.cc
index 0da92cc271b117c70c16d1173e516c31b6de8071..70ee22e47975d193a15feb8e5822e75b693667e0 100644
--- a/chrome/browser/history/history_backend.cc
+++ b/chrome/browser/history/history_backend.cc
@@ -1076,6 +1076,15 @@ void HistoryBackend::GetMostRecentKeywordSearchTerms(
 
 // Downloads -------------------------------------------------------------------
 
+void HistoryBackend::GetNextDownloadId(
+    scoped_refptr<DownloadNextIdRequest> request) {
+  if (request->canceled()) return;
+  if (db_.get()) {
+    request->value = db_->next_download_id();
+  }
+  request->ForwardResult(DownloadNextIdRequest::TupleType(request->value));
+}
+
 // Get all the download entries from the database.
 void HistoryBackend::QueryDownloads(
     scoped_refptr<DownloadQueryRequest> request) {