[Chrome OS] Fix data migration on PW change in parallel auth pathway

chrome/browser/chromeos/login/cryptohome_op.cc

 // Copyright (c) 2010 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/cryptohome_op.h"
 
 #include <string>
 
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/cryptohome_library.h"
@@ skipping 64 matching lines @@
     CryptohomeLibrary* lib = CrosLibrary::Get()->GetCryptohomeLibrary();
     return lib->AsyncMountForBwsi(this);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MountGuestAttempt);
 };
 
 class MigrateAttempt : public CryptohomeOp {
  public:
+  // TODO(cmasone): get rid of passing_old_hash arg, as it's always true.
   MigrateAttempt(AuthAttemptState* current_attempt,
                  AuthAttemptStateResolver* callback,
                  bool passing_old_hash,
                  const std::string& hash)
       : CryptohomeOp(current_attempt, callback),
         is_old_hash_(passing_old_hash),
         hash_(hash) {
   }
 
   virtual ~MigrateAttempt() {}
@@ skipping 92 matching lines @@
 
 // static
 CryptohomeOp* CryptohomeOp::CreateCheckKeyAttempt(
     AuthAttemptState* current_attempt,
     AuthAttemptStateResolver* callback) {
 
   return new CheckKeyAttempt(current_attempt, callback);
 }
 
 }  // namespace chromeos