Thread-safe version of PassphraseType.

components/sync/core/sync_encryption_handler.h

 // Copyright 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.
 
 #ifndef COMPONENTS_SYNC_CORE_SYNC_ENCRYPTION_HANDLER_H_
 #define COMPONENTS_SYNC_CORE_SYNC_ENCRYPTION_HANDLER_H_
 
 #include <string>
 
 #include "base/time/time.h"
@@ skipping 148 matching lines @@
   // error to call this when we don't have pending keys.
   virtual void SetDecryptionPassphrase(const std::string& passphrase) = 0;
 
   // Enables encryption of all datatypes.
   virtual void EnableEncryptEverything() = 0;
 
   // Whether encryption of all datatypes is enabled. If false, only sensitive
   // types are encrypted.
   virtual bool IsEncryptEverythingEnabled() const = 0;
 
-  // Returns the current state of the passphrase needed to decrypt the
-  // bag of encryption keys in the nigori node.
-  virtual PassphraseType GetPassphraseType() const = 0;
-
   // The set of types that are always encrypted.
   static ModelTypeSet SensitiveTypes();
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_CORE_SYNC_ENCRYPTION_HANDLER_H_