Certificate path builder for new certificate verification library

net/der/input.h

Index: net/der/input.h
diff --git a/net/der/input.h b/net/der/input.h
index 121a9e0770a949c077bd5e6047a37b7b39c5dd2c..2ba7ace6aeb2e4b03f8b18cb42b4628d3cbe3895 100644
--- a/net/der/input.h
+++ b/net/der/input.h
@@ -44,6 +44,10 @@ class NET_EXPORT_PRIVATE Input {
   // Creates an empty Input, one from which no data can be read.
   Input();
 
+  // Creates an Input pointed to the same section of |new_base| as |other|
+  // points to in |old_base|.
+  Input(const Input& other, const Input& old_base, const Input& new_base);
+
   // Creates an Input from a constant array |data|.
   template <size_t N>
   explicit Input(const uint8_t(&data)[N])