net: remove CryptoModule class

net/base/crypto_module.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 NET_BASE_CRYPTO_MODULE_H_
-#define NET_BASE_CRYPTO_MODULE_H_
-
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "net/base/net_export.h"
-
-#if defined(USE_NSS_CERTS)
-typedef struct PK11SlotInfoStr PK11SlotInfo;
-#endif
-
-namespace net {
-
-class CryptoModule;
-
-class NET_EXPORT CryptoModule
-    : public base::RefCountedThreadSafe<CryptoModule> {
- public:
-#if defined(USE_NSS_CERTS)
-  typedef PK11SlotInfo* OSModuleHandle;
-#else
-  typedef void* OSModuleHandle;
-#endif
-
-  OSModuleHandle os_module_handle() const { return module_handle_; }
-
-  std::string GetTokenName() const;
-
-  static CryptoModule* CreateFromHandle(OSModuleHandle handle);
-
- private:
-  friend class base::RefCountedThreadSafe<CryptoModule>;
-
-  explicit CryptoModule(OSModuleHandle handle);
-  ~CryptoModule();
-
-  OSModuleHandle module_handle_;
-
-  DISALLOW_COPY_AND_ASSIGN(CryptoModule);
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_CRYPTO_MODULE_H_