AU: Allow override of "appid" through the lsb-release file.

omaha_request_params.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_params.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/utsname.h>
 
@@ skipping 29 matching lines @@
     forced_official_build_(false) {}
 
 bool OmahaRequestDeviceParams::Init(const std::string& in_app_version,
                                     const std::string& in_update_url) {
   os_platform = OmahaRequestParams::kOsPlatform;
   os_version = OmahaRequestParams::kOsVersion;
   app_version = in_app_version.empty() ?
       GetLsbValue("CHROMEOS_RELEASE_VERSION", "", NULL) : in_app_version;
   os_sp = app_version + "_" + GetMachineType();
   os_board = GetLsbValue("CHROMEOS_RELEASE_BOARD", "", NULL);
-  app_id = OmahaRequestParams::kAppId;
+  app_id = GetLsbValue("CHROMEOS_RELEASE_APPID",
+                       OmahaRequestParams::kAppId,
+                       NULL);
   app_lang = "en-US";
   app_track = GetLsbValue(
       kUpdateTrackKey,
       "",
       &chromeos_update_engine::OmahaRequestDeviceParams::IsValidTrack);
   hardware_class = GetHardwareClass();
   struct stat stbuf;
 
   // Deltas are only okay if the /.nodelta file does not exist.
   // If we don't know (i.e. stat() returns some unexpected error),
@@ skipping 101 matching lines @@
   }
   return false;
 }
 
 void OmahaRequestDeviceParams::SetBuildTypeOfficial(bool is_official) {
   force_build_type_ = true;
   forced_official_build_ = is_official;
 }
 
 }  // namespace chromeos_update_engine