Add support to update_engine_client for -app_version and -omaha_url.

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>
 #include <libxml/xpathInternals.h>
 
 #include "base/string_util.h"
 #include "chromeos/obsolete_logging.h"
 #include "update_engine/action_pipe.h"
 #include "update_engine/omaha_request_params.h"
 #include "update_engine/utils.h"
 
 using std::string;
 
 namespace chromeos_update_engine {
 
-const char* const OmahaRequestParams::kAppId(
-    "{87efface-864d-49a5-9bb3-4b050a7c227a}");
-const char* const OmahaRequestParams::kOsPlatform("Chrome OS");
-const char* const OmahaRequestParams::kOsVersion("Indy");
-const char* const OmahaRequestParams::kUpdateUrl(
-    "https://tools.google.com/service/update2");
-
 namespace {
 
 const string kGupdateVersion("ChromeOSUpdateEngine-0.1.0.0");
 
 // This is handy for passing strings into libxml2
 #define ConstXMLStr(x) (reinterpret_cast<const xmlChar*>(x))
 
 // These are for scoped_ptr_malloc, which is like scoped_ptr, but allows
 // a custom free() function to be specified.
 class ScopedPtrXmlDocFree {
@@ skipping 255 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