Move most of the component updater artifacts to update_client.

components/update_client/ping_manager.h

Index: components/update_client/ping_manager.h
diff --git a/components/component_updater/component_updater_ping_manager.h b/components/update_client/ping_manager.h
similarity index 68%
rename from components/component_updater/component_updater_ping_manager.h
rename to components/update_client/ping_manager.h
index e48ae05e9e21607bb40f23d0d0278fb6a3449c2d..df2fa442841267a8ad6905253021ba8c2cd4518c 100644
--- a/components/component_updater/component_updater_ping_manager.h
+++ b/components/update_client/ping_manager.h
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_PING_MANAGER_H_
-#define COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_PING_MANAGER_H_
+#ifndef COMPONENTS_UPDATE_CLIENT_PING_MANAGER_H_
+#define COMPONENTS_UPDATE_CLIENT_PING_MANAGER_H_
 
 #include "base/macros.h"
 
-namespace component_updater {
+namespace update_client {
 
 class Configurator;
 struct CrxUpdateItem;
@@ -27,6 +27,6 @@ class PingManager {
   DISALLOW_COPY_AND_ASSIGN(PingManager);
 };
 
-}  // namespace component_updater
+}  // namespace update_client
 
-#endif  // COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_PING_MANAGER_H_
+#endif  // COMPONENTS_UPDATE_CLIENT_PING_MANAGER_H_