Revert of Fetch OAuth2 tokens prior to profile creation.

chrome/browser/chromeos/login/signin/oauth2_token_initializer.cc

-// Copyright 2015 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/chromeos/login/signin/oauth2_token_initializer.h"
-
-#include "chrome/browser/browser_process.h"
-
-namespace chromeos {
-
-OAuth2TokenInitializer::OAuth2TokenInitializer() {
-}
-
-OAuth2TokenInitializer::~OAuth2TokenInitializer() {
-}
-
-void OAuth2TokenInitializer::Start(const UserContext& user_context,
-                                   const FetchOAuth2TokensCallback& callback) {
-  DCHECK(!user_context.GetAuthCode().empty());
-  callback_ = callback;
-  user_context_ = user_context;
-  oauth2_token_fetcher_.reset(new OAuth2TokenFetcher(
-      this, g_browser_process->system_request_context()));
-  oauth2_token_fetcher_->StartExchangeFromAuthCode(user_context.GetAuthCode());
-}
-
-void OAuth2TokenInitializer::OnOAuth2TokensAvailable(
-    const GaiaAuthConsumer::ClientOAuthResult& oauth2_tokens) {
-  VLOG(1) << "OAuth2 tokens fetched";
-  user_context_.SetAuthCode(std::string());
-  user_context_.SetRefreshToken(oauth2_tokens.refresh_token);
-  user_context_.SetAccessToken(oauth2_tokens.access_token);
-  callback_.Run(true, user_context_);
-}
-
-void OAuth2TokenInitializer::OnOAuth2TokensFetchFailed() {
-  LOG(WARNING) << "OAuth2TokenInitializer - OAuth2 token fetch failed";
-  callback_.Run(false, user_context_);
-}
-
-}  // namespace chromeos