Set linux distro to CHROMEOS_RELEASE_DESCRIPTION on ChromeOS

chrome/browser/chromeos/login/version_info_updater.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/version_info_updater.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 173 matching lines @@
         enterprise_info = l10n_util::GetStringFUTF8(
             IDS_LOGIN_MANAGED_BY_NOTICE,
             UTF8ToUTF16(enterprise_domain_text_));
         delegate_->OnEnterpriseInfoUpdated(enterprise_info, reporting_hint);
       }
     }
   }
 }
 
 void VersionInfoUpdater::OnVersion(
-    VersionLoader::Handle handle, std::string version) {
-  version_text_.swap(version);
+    VersionLoader::Handle handle, const std::string& version) {
+  version_text_ = version;
   UpdateVersionLabel();
 }
 
 void VersionInfoUpdater::OnBootTimesNoop(
     BootTimesLoader::Handle handle, BootTimesLoader::BootTimes boot_times) {
 }
 
 void VersionInfoUpdater::OnBootTimes(
     BootTimesLoader::Handle handle, BootTimesLoader::BootTimes boot_times) {
   const char* kBootTimesNoChromeExec =
@@ skipping 34 matching lines @@
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   if (type == chrome::NOTIFICATION_SYSTEM_SETTING_CHANGED)
     UpdateEnterpriseInfo();
   else
     NOTREACHED();
 }
 
 }  // namespace chromeos