Revert of Clean up Smart Lock cryptohome keys logic:

chrome/browser/chromeos/login/easy_unlock/easy_unlock_refresh_keys_operation.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 "base/bind.h"
-#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_create_keys_operation.h"
-#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_refresh_keys_operation.h"
-#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_remove_keys_operation.h"
-
-namespace chromeos {
-
-EasyUnlockRefreshKeysOperation::EasyUnlockRefreshKeysOperation(
-    const UserContext& user_context,
-    const std::string& tpm_public_key,
-    const EasyUnlockDeviceKeyDataList& devices,
-    const RefreshKeysCallback& callback)
-    : user_context_(user_context),
-      tpm_public_key_(tpm_public_key),
-      devices_(devices),
-      callback_(callback),
-      weak_ptr_factory_(this) {
-}
-
-EasyUnlockRefreshKeysOperation::~EasyUnlockRefreshKeysOperation() {
-}
-
-void EasyUnlockRefreshKeysOperation::Start() {
-  if (devices_.empty()) {
-    OnKeysCreated(true);
-    return;
-  }
-
-  create_keys_operation_.reset(new EasyUnlockCreateKeysOperation(
-      user_context_, tpm_public_key_, devices_,
-      base::Bind(&EasyUnlockRefreshKeysOperation::OnKeysCreated,
-                 weak_ptr_factory_.GetWeakPtr())));
-  create_keys_operation_->Start();
-}
-
-void EasyUnlockRefreshKeysOperation::OnKeysCreated(bool success) {
-  if (!success) {
-    callback_.Run(false);
-    return;
-  }
-
-  // Update the user context to have the new authorization key after the create
-  // keys operation. This is necessary because the old authorization key
-  // associated with the user context will be invalidated after the create keys
-  // operation.
-  if (create_keys_operation_)
-    user_context_ = create_keys_operation_->user_context();
-
-  remove_keys_operation_.reset(new EasyUnlockRemoveKeysOperation(
-      user_context_, devices_.size(),
-      base::Bind(&EasyUnlockRefreshKeysOperation::OnKeysRemoved,
-                 weak_ptr_factory_.GetWeakPtr())));
-  remove_keys_operation_->Start();
-}
-
-void EasyUnlockRefreshKeysOperation::OnKeysRemoved(bool success) {
-  callback_.Run(success);
-}
-
-}  // namespace chromeos