Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/easy_unlock_private/easy_unlock_private_crypto_delegate_chromeos.cc

 // 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.
 
 #include "chrome/browser/extensions/api/easy_unlock_private/easy_unlock_private_crypto_delegate.h"
 
 #include "base/macros.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/easy_unlock_client.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
@@ skipping 106 matching lines @@
 
  private:
   chromeos::EasyUnlockClient* dbus_client_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockPrivateCryptoDelegateChromeOS);
 };
 
 }  // namespace
 
 // static
-scoped_ptr<EasyUnlockPrivateCryptoDelegate>
-    EasyUnlockPrivateCryptoDelegate::Create() {
-  return scoped_ptr<EasyUnlockPrivateCryptoDelegate>(
+std::unique_ptr<EasyUnlockPrivateCryptoDelegate>
+EasyUnlockPrivateCryptoDelegate::Create() {
+  return std::unique_ptr<EasyUnlockPrivateCryptoDelegate>(
       new EasyUnlockPrivateCryptoDelegateChromeOS());
 }
 
 }  // namespace extensions