Move most of the component updater artifacts to update_client.

components/component_updater/request_sender.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 "components/component_updater/request_sender.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
-#include "components/component_updater/component_updater_configurator.h"
-#include "components/component_updater/component_updater_utils.h"
-#include "net/url_request/url_fetcher.h"
-
-namespace component_updater {
-
-RequestSender::RequestSender(const Configurator& config) : config_(config) {
-}
-
-RequestSender::~RequestSender() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-}
-
-void RequestSender::Send(const std::string& request_string,
-                         const std::vector<GURL>& urls,
-                         const RequestSenderCallback& request_sender_callback) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (urls.empty()) {
-    request_sender_callback.Run(NULL);
-    return;
-  }
-
-  request_string_ = request_string;
-  urls_ = urls;
-  request_sender_callback_ = request_sender_callback;
-
-  cur_url_ = urls_.begin();
-
-  SendInternal();
-}
-
-void RequestSender::SendInternal() {
-  DCHECK(cur_url_ != urls_.end());
-  DCHECK(cur_url_->is_valid());
-  DCHECK(thread_checker_.CalledOnValidThread());
-
-  url_fetcher_.reset(SendProtocolRequest(
-      *cur_url_, request_string_, this, config_.RequestContext()));
-}
-
-void RequestSender::OnURLFetchComplete(const net::URLFetcher* source) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (GetFetchError(*source) == 0) {
-    request_sender_callback_.Run(source);
-    return;
-  }
-
-  if (++cur_url_ != urls_.end() &&
-      base::ThreadTaskRunnerHandle::Get()->PostTask(
-          FROM_HERE,
-          base::Bind(&RequestSender::SendInternal, base::Unretained(this)))) {
-    return;
-  }
-
-  request_sender_callback_.Run(source);
-}
-
-}  // namespace component_updater