[cros] user_manager component - move UserManagerBase and UserManager

chrome/browser/chromeos/attestation/platform_verification_flow.h

 // Copyright 2013 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_ATTESTATION_PLATFORM_VERIFICATION_FLOW_H_
 #define CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_FLOW_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 19 matching lines @@
 class User;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace chromeos {
 
 class CryptohomeClient;
-class UserManager;
 
 namespace attestation {
 
 class AttestationFlow;
 class PlatformVerificationFlowTest;
 
 // This class allows platform verification for the content protection use case.
 // All methods must only be called on the UI thread.  Example:
 //   scoped_refptr<PlatformVerificationFlow> verifier =
 //       new PlatformVerificationFlow();
@@ skipping 222 matching lines @@
   scoped_ptr<Delegate> default_delegate_;
   base::TimeDelta timeout_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformVerificationFlow);
 };
 
 }  // namespace attestation
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_FLOW_H_