cros: Remove AuthenticatedUserEmailRetriever.

chrome/browser/ui/webui/chromeos/login/authenticated_user_email_retriever.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/ui/webui/chromeos/login/authenticated_user_email_retriever.h"
-
-#include <utility>
-#include <vector>
-
-#include "google_apis/gaia/gaia_auth_util.h"
-#include "google_apis/gaia/gaia_constants.h"
-#include "google_apis/gaia/google_service_auth_error.h"
-#include "net/url_request/url_request_context_getter.h"
-
-namespace chromeos {
-
-AuthenticatedUserEmailRetriever::AuthenticatedUserEmailRetriever(
-    const AuthenticatedUserEmailCallback& callback,
-    scoped_refptr<net::URLRequestContextGetter> url_request_context_getter)
-    : callback_(callback),
-      gaia_auth_fetcher_(this,
-                         GaiaConstants::kChromeSource,
-                         url_request_context_getter.get()) {
-  gaia_auth_fetcher_.StartListAccounts();
-}
-
-AuthenticatedUserEmailRetriever::~AuthenticatedUserEmailRetriever() {
-}
-
-void AuthenticatedUserEmailRetriever::OnListAccountsSuccess(
-    const std::string& data) {
-  std::vector<gaia::ListedAccount> accounts;
-  gaia::ParseListAccountsData(data, &accounts, nullptr);
-  if (accounts.size() != 1)
-    callback_.Run(std::string());
-  else
-    callback_.Run(accounts.front().email);
-}
-
-void AuthenticatedUserEmailRetriever::OnListAccountsFailure(
-    const GoogleServiceAuthError& error) {
-  callback_.Run(std::string());
-}
-
-}  // namespace chromeos