Add butter bar to login screen to show device enrollement info.

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 <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 149 matching lines @@
   SetEnterpriseInfo(policy_connector->GetEnterpriseDomain(), status_text);
 }
 
 void VersionInfoUpdater::SetEnterpriseInfo(const std::string& domain_name,
                                        const std::string& status_text) {
   if (domain_name != enterprise_domain_text_ ||
       status_text != enterprise_status_text_) {
     enterprise_domain_text_ = domain_name;
     enterprise_status_text_ = status_text;
     UpdateVersionLabel();
+
+    // Update the notification about device status reporting.
+    if (delegate_) {
+      std::string enterprise_info;
+      // When there is no managed domain, send an empty enterprise info
+      // message, which indicates that the message should not be shown.

[Nikita (slow), 2012/02/23 14:58:51]

We could as well not call OnEnterpriseInfoUpdated() in that case as domain is
not updated ("" > ""). Another transition is not possible ("domain" > "").
But I'm not insisting and this could could stay as is.

[Patrick Dubroy, 2012/02/28 00:51:02]

Done.

+      if (!domain_name.empty()) {
+        enterprise_info = l10n_util::GetStringFUTF8(
+            IDS_LOGIN_MANAGED_BY_NOTICE,
+            UTF8ToUTF16(enterprise_domain_text_));
+      }
+      delegate_->OnEnterpriseInfoUpdated(enterprise_info);
+    }
   }
 }
 
 void VersionInfoUpdater::OnVersion(
     VersionLoader::Handle handle, std::string version) {
   version_text_.swap(version);
   UpdateVersionLabel();
 }
 
 void VersionInfoUpdater::OnBootTimesNoop(
@@ skipping 30 matching lines @@
     delegate_->OnBootTimesLabelTextUpdated(boot_times_text);
 }
 
 void VersionInfoUpdater::OnPolicyStateChanged(
     policy::CloudPolicySubsystem::PolicySubsystemState state,
     policy::CloudPolicySubsystem::ErrorDetails error_details) {
   UpdateEnterpriseInfo();
 }
 
 }  // namespace chromeos