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

chrome/browser/chromeos/login/version_info_updater.h

 // Copyright (c) 2011 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_
 #pragma once
 
 #include <string>
 
@@ skipping 11 matching lines @@
    public:
     virtual ~Delegate() {}
 
     // Called when OS version label should be updated.
     virtual void OnOSVersionLabelTextUpdated(
         const std::string& os_version_label_text) = 0;
 
     // Called when boot times label should be updated.
     virtual void OnBootTimesLabelTextUpdated(
         const std::string& boot_times_label_text) = 0;
+
+    // Called when the enterprise info notice should be updated.
+    virtual void OnEnterpriseInfoUpdated(
+        const std::string& enterprise_info) = 0;
   };
 
   explicit VersionInfoUpdater(Delegate* delegate);
   virtual ~VersionInfoUpdater();
 
   // Sets delegate.
   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
 
   // Starts fetching version info. The delegate will be notified when update
   // is received.
@@ skipping 47 matching lines @@
       cloud_policy_registrar_;
 
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_