Set linux distro to CHROMEOS_RELEASE_DESCRIPTION on ChromeOS

chrome/browser/chromeos/login/version_info_updater.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
 
 #include <string>
 
 #include "chrome/browser/chromeos/boot_times_loader.h"
@@ skipping 55 matching lines @@
 
   // Check and update enterprise domain.
   void UpdateEnterpriseInfo();
 
   // Set enterprise domain name.
   void SetEnterpriseInfo(const std::string& domain_name,
                          const std::string& status_text,
                          bool reporting_hint);
 
   // Callback from chromeos::VersionLoader giving the version.
-  void OnVersion(VersionLoader::Handle handle, std::string version);
+  void OnVersion(VersionLoader::Handle handle, const std::string& version);
   // Callback from chromeos::InfoLoader giving the boot times.
   void OnBootTimes(
       BootTimesLoader::Handle handle, BootTimesLoader::BootTimes boot_times);
   // Null callback from chromeos::InfoLoader.
   void OnBootTimesNoop(
       BootTimesLoader::Handle handle, BootTimesLoader::BootTimes boot_times);
 
   // Handles asynchronously loading the version.
   VersionLoader version_loader_;
   // Used to request the version.
@@ skipping 20 matching lines @@
   chromeos::CrosSettings* cros_settings_;
 
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_