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

chrome/browser/history/download_database.h

Index: chrome/browser/history/download_database.h
diff --git a/chrome/browser/history/download_database.h b/chrome/browser/history/download_database.h
index c77500ccf88777e3d427c8050fe577b872b816cd..8f97e55be8f380955a30c24dde6a5ab4258e8615 100644
--- a/chrome/browser/history/download_database.h
+++ b/chrome/browser/history/download_database.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "chrome/browser/history/history_types.h"
+#include "sql/meta_table.h"
 
 struct DownloadPersistentStoreInfo;
 class FilePath;
@@ -24,6 +25,8 @@ class DownloadDatabase {
   DownloadDatabase();
   virtual ~DownloadDatabase();
 
+  int next_download_id() const { return next_id_; }
+
   // Get all the downloads from the database.
   void QueryDownloads(std::vector<DownloadPersistentStoreInfo>* results);
 
@@ -63,6 +66,9 @@ class DownloadDatabase {
   bool DropDownloadTable();
 
  private:
+  int next_id_;
+  sql::MetaTable meta_table_;
+
   DISALLOW_COPY_AND_ASSIGN(DownloadDatabase);
 };