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

chrome/browser/download/download_history.cc

Index: chrome/browser/download/download_history.cc
diff --git a/chrome/browser/download/download_history.cc b/chrome/browser/download/download_history.cc
index 115541a4d24742ed52fa9ed9683f915109b60175..ff5d2447caa207c442b424bfc9dd8ba48d5737c1 100644
--- a/chrome/browser/download/download_history.cc
+++ b/chrome/browser/download/download_history.cc
@@ -33,6 +33,17 @@ DownloadHistory::~DownloadHistory() {
     delete i->second.second;
 }
 
+void DownloadHistory::GetNextId(
+    HistoryService::DownloadNextIdCallback* callback) {
+  DCHECK(callback);
+  HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
+  if (!hs) {
+    delete callback;
+    return;
+  }
+  hs->GetNextDownloadId(&history_consumer_, callback);
+}
+
 void DownloadHistory::Load(HistoryService::DownloadQueryCallback* callback) {
   DCHECK(callback);
   HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);