Add a hardware_class attribute (for HWID, HWQual ID) to the Omaha request.

omaha_request_action.cc

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "update_engine/omaha_request_action.h"
 #include <inttypes.h>
 #include <sstream>
 
 #include <libxml/parser.h>
 #include <libxml/xpath.h>
@@ skipping 100 matching lines @@
       "version=\"" + XmlEncode(kGupdateVersion) + "\" "
       "updaterversion=\"" + XmlEncode(kGupdateVersion) + "\" "
       "protocol=\"2.0\" ismachine=\"1\">\n"
       "    <o:os version=\"" + XmlEncode(params.os_version) + "\" platform=\"" +
       XmlEncode(params.os_platform) + "\" sp=\"" +
       XmlEncode(params.os_sp) + "\"></o:os>\n"
       "    <o:app appid=\"" + XmlEncode(params.app_id) + "\" version=\"" +
       XmlEncode(params.app_version) + "\" "
       "lang=\"" + XmlEncode(params.app_lang) + "\" track=\"" +
       XmlEncode(params.app_track) + "\" board=\"" +
-      XmlEncode(params.os_board) + "\" delta_okay=\"" +
+      XmlEncode(params.os_board) + "\" hardware_class=\"" +
+      XmlEncode(params.hardware_class) + "\" delta_okay=\"" +
       (params.delta_okay ? "true" : "false") + "\">\n" + body +
       "    </o:app>\n"
       "</o:gupdate>\n";
 }
 
 }  // namespace {}
 
 // Encodes XML entities in a given string with libxml2. input must be
 // UTF-8 formatted. Output will be UTF-8 formatted.
 string XmlEncode(const string& input) {
@@ skipping 272 matching lines @@
   output_object.needs_admin =
       XmlGetProperty(updatecheck_node, "needsadmin") == "true";
   output_object.prompt = XmlGetProperty(updatecheck_node, "Prompt") == "true";
   output_object.is_delta =
       XmlGetProperty(updatecheck_node, "IsDelta") == "true";
   SetOutputObject(output_object);
   return;
 }
 
 };  // namespace chromeos_update_engine