Upgrade libcups to v2.3.1
Local changes:
1. Makes _cupsSetHTTPError visible because it is used in
BuiltInPrintService.
2. Adds config.h and cups/tls-boringssl.c.
Exempt-From-Owner-Approval: upgrade
Change-Id: Iabc33a8248ee1441333ab0e0ace8cf1965a5b866
diff --git a/templates/modify-class.tmpl b/templates/modify-class.tmpl
new file mode 100644
index 0000000..1aa4fe6
--- /dev/null
+++ b/templates/modify-class.tmpl
@@ -0,0 +1,31 @@
+<H2 CLASS="title">Modify Class {printer_name}</H2>
+
+<FORM METHOD="POST" ACTION="/admin">
+<INPUT TYPE="HIDDEN" NAME="org.cups.sid" VALUE="{$org.cups.sid}">
+<INPUT TYPE="HIDDEN" NAME="OP" VALUE="{op}">
+<INPUT TYPE="HIDDEN" NAME="PRINTER_NAME" VALUE="{printer_name}">
+
+<TABLE>
+<TR>
+<TH CLASS="label">Description:</TH>
+<TD><INPUT TYPE="TEXT" NAME="PRINTER_INFO" VALUE="{?printer_info}" SIZE="40" MAXLENGTH="127"></TD>
+</TR>
+<TR>
+<TH CLASS="label">Location:</TH>
+<TD><INPUT TYPE="TEXT" NAME="PRINTER_LOCATION" VALUE="{?printer_location}" SIZE="40" MAXLENGTH="127"></TD>
+</TR>
+<TR>
+<TH CLASS="label">Members:</TH>
+<TD>
+<SELECT NAME="MEMBER_URIS" SIZE="10" MULTIPLE>
+{[member_uris]<OPTION VALUE="{member_uris}" {?member_selected}>{member_names}}
+</SELECT>
+</TD>
+</TR>
+<TR>
+<TD></TD>
+<TD><INPUT TYPE="SUBMIT" VALUE="Modify Class"></TD>
+</TR>
+</TABLE>
+
+</FORM>