Ignore cookies with invalid 'SameSite' attribute values.

net/extras/sqlite/sqlite_persistent_cookie_store.cc

Index: net/extras/sqlite/sqlite_persistent_cookie_store.cc
diff --git a/net/extras/sqlite/sqlite_persistent_cookie_store.cc b/net/extras/sqlite/sqlite_persistent_cookie_store.cc
index 911f05a95818415aa5ba9103f05bb3ed2a951768..1ba6dccf475d338fb5efae675d23f0ccf9a8fc9c 100644
--- a/net/extras/sqlite/sqlite_persistent_cookie_store.cc
+++ b/net/extras/sqlite/sqlite_persistent_cookie_store.cc
@@ -388,6 +388,9 @@ DBCookieSameSite CookieSameSiteToDBCookieSameSite(CookieSameSite value) {
       return kCookieSameSiteLax;
     case CookieSameSite::STRICT_MODE:
       return kCookieSameSiteStrict;
+    case CookieSameSite::INVALID_MODE:
+      NOTREACHED();
+      return kCookieSameSiteStrict;
   }
 
   NOTREACHED();