ABANDONED CL: Introducing a compile-time-safe SavePackageId type.

content/browser/download/save_types.h

Index: content/browser/download/save_types.h
diff --git a/content/browser/download/save_types.h b/content/browser/download/save_types.h
index 504be2f3e107576dd00783eebe3b4f4d3f77edb3..136efd296dc891bf7e63143687df79cc0f2f98c2 100644
--- a/content/browser/download/save_types.h
+++ b/content/browser/download/save_types.h
@@ -11,9 +11,14 @@
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
+#include "base/id_type.h"
 #include "url/gurl.h"
 
 namespace content {
+
+class SavePackage;
+using SavePackageId = base::IdType<SavePackage, int, 0>;
+
 typedef std::vector<std::pair<int, base::FilePath> > FinalNameList;
 typedef std::vector<int> SaveIDList;
 
@@ -53,7 +58,7 @@ struct SaveFileCreateInfo {
   // the SaveFileManager for its internal record keeping.
   int save_id;
   // ID of SavePackage object.
-  int save_package_id;
+  SavePackageId save_package_id;
   // IDs for looking up the contents we are associated with.
   int render_process_id;
   int render_frame_routing_id;