Move most of the component updater artifacts to update_client.

components/update_client/url_fetcher_downloader.cc

Index: components/update_client/url_fetcher_downloader.cc
diff --git a/components/component_updater/url_fetcher_downloader.cc b/components/update_client/url_fetcher_downloader.cc
similarity index 94%
rename from components/component_updater/url_fetcher_downloader.cc
rename to components/update_client/url_fetcher_downloader.cc
index 2eeb3f10b2ca4965c9705f06ca457d1293a77596..fd7f3da0b0bb54c227841b9e7de84d4e91879676 100644
--- a/components/component_updater/url_fetcher_downloader.cc
+++ b/components/update_client/url_fetcher_downloader.cc
@@ -2,18 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "components/component_updater/url_fetcher_downloader.h"
+#include "components/update_client/url_fetcher_downloader.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "base/sequenced_task_runner.h"
-#include "components/component_updater/component_updater_utils.h"
+#include "components/update_client/utils.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_fetcher.h"
 #include "url/gurl.h"
 
-namespace component_updater {
+namespace update_client {
 
 UrlFetcherDownloader::UrlFetcherDownloader(
     scoped_ptr<CrxDownloader> successor,
@@ -106,4 +106,4 @@ void UrlFetcherDownloader::OnURLFetchDownloadProgress(
   OnDownloadProgress(result);
 }
 
-}  // namespace component_updater
+}  // namespace update_client