Make the saved password website link-able.

chrome/common/extensions/api/passwords_private.idl

Index: chrome/common/extensions/api/passwords_private.idl
diff --git a/chrome/common/extensions/api/passwords_private.idl b/chrome/common/extensions/api/passwords_private.idl
index c2a1265f194bb7c6f86ec012ee49fb860c43f32a..1b1d0413119f3cc7024cac32f34689933874576f 100644
--- a/chrome/common/extensions/api/passwords_private.idl
+++ b/chrome/common/extensions/api/passwords_private.idl
@@ -19,6 +19,9 @@ namespace passwordsPrivate {
     // The login information for this entry.
     LoginPair loginPair;
 
+    // The URL that should be linked to when clicking in the UI.
+    DOMString linkUrl;
+
     // The number of characters in the password; used to display placeholder
     // dots in the UI.
     long numCharactersInPassword;