Move most of the component updater artifacts to update_client.

components/update_client/crx_update_item.h

Index: components/update_client/crx_update_item.h
diff --git a/components/component_updater/crx_update_item.h b/components/update_client/crx_update_item.h
similarity index 92%
rename from components/component_updater/crx_update_item.h
rename to components/update_client/crx_update_item.h
index 8a6414636df461a295a775b10dbef8a6e9976b39..ba38a1b6c8694e9292998d2255f6c8ff90acba1a 100644
--- a/components/component_updater/crx_update_item.h
+++ b/components/update_client/crx_update_item.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_CRX_UPDATE_ITEM_H_
-#define COMPONENTS_COMPONENT_UPDATER_CRX_UPDATE_ITEM_H_
+#ifndef COMPONENTS_UPDATE_CLIENT_CRX_UPDATE_ITEM_H_
+#define COMPONENTS_UPDATE_CLIENT_CRX_UPDATE_ITEM_H_
 
 #include <string>
 #include <vector>
@@ -11,10 +11,10 @@
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/version.h"
-#include "components/component_updater/component_updater_service.h"
-#include "components/component_updater/crx_downloader.h"
+#include "components/update_client/crx_downloader.h"
+#include "components/update_client/update_client.h"
 
-namespace component_updater {
+namespace update_client {
 
 // This is the one and only per-item state structure. Designed to be hosted
 // in a std::vector or a std::list. The two main members are |component|
@@ -124,6 +124,6 @@ struct CrxUpdateItem {
   };
 };
 
-}  // namespace component_updater
+}  // namespace update_client
 
-#endif  // COMPONENTS_COMPONENT_UPDATER_CRX_UPDATE_ITEM_H_
+#endif  // COMPONENTS_UPDATE_CLIENT_CRX_UPDATE_ITEM_H_