Move most of the component updater artifacts to update_client.

components/update_client/request_sender.h

Index: components/update_client/request_sender.h
diff --git a/components/component_updater/request_sender.h b/components/update_client/request_sender.h
similarity index 88%
rename from components/component_updater/request_sender.h
rename to components/update_client/request_sender.h
index 5d137e2b4a77038c6d92a3c23e5ef9eb37e62150..5c05350df74e6fdbc638546b0eb3f34026900658 100644
--- a/components/component_updater/request_sender.h
+++ b/components/update_client/request_sender.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_COMPONENT_UPDATER_REQUEST_SENDER_H_
-#define COMPONENTS_COMPONENT_UPDATER_REQUEST_SENDER_H_
+#ifndef COMPONENTS_UPDATE_CLIENT_REQUEST_SENDER_H_
+#define COMPONENTS_UPDATE_CLIENT_REQUEST_SENDER_H_
 
 #include <string>
 #include <vector>
@@ -20,7 +20,7 @@ namespace net {
 class URLFetcher;
 }
 
-namespace component_updater {
+namespace update_client {
 
 class Configurator;
 
@@ -59,6 +59,6 @@ class RequestSender : public net::URLFetcherDelegate {
   DISALLOW_COPY_AND_ASSIGN(RequestSender);
 };
 
-}  // namespace component_updater
+}  // namespace update_client
 
-#endif  // COMPONENTS_COMPONENT_UPDATER_REQUEST_SENDER_H_
+#endif  // COMPONENTS_UPDATE_CLIENT_REQUEST_SENDER_H_