sync: Finish non-blocking type encryption support

sync/test/engine/simple_cryptographer_provider.h

-// Copyright 2014 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 SYNC_TEST_ENGINE_SIMPLE_CRYPTOGRAPHER_PROVIDER_H_
-#define SYNC_TEST_ENGINE_SIMPLE_CRYPTOGRAPHER_PROVIDER_H_
-
-#include "sync/engine/cryptographer_provider.h"
-
-#include "sync/util/cryptographer.h"
-
-namespace syncer {
-
-// A trivial cryptographer provider.  Exposes the given Cryptographer through
-// the CryptographerProvider interface.  Does not take ownership of the
-// |cryptographer|.
-class SimpleCryptographerProvider : public CryptographerProvider {
- public:
-  explicit SimpleCryptographerProvider(Cryptographer* cryptographer);
-  virtual ~SimpleCryptographerProvider();
-
-  // Implementation of CryptographerProvider.
-  virtual bool InitScopedCryptographerRef(
-      ScopedCryptographerRef* scoped) OVERRIDE;
-
- private:
-  Cryptographer* cryptographer_;
-};
-
-class SimpleScopedCryptographerInternal : public ScopedCryptographerInternal {
- public:
-  explicit SimpleScopedCryptographerInternal(Cryptographer* cryptographer);
-  virtual ~SimpleScopedCryptographerInternal();
-
-  // Implementation of ScopedCryptographerInternal.
-  virtual Cryptographer* Get() const OVERRIDE;
-
- private:
-  Cryptographer* cryptographer_;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_TEST_ENGINE_SIMPLE_CRYPTOGRAPHER_PROVIDER_H_