Move component updater artifacts into component_updater namespace.

chrome/browser/component_updater/flash_component_installer.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_COMPONENT_UPDATER_FLASH_COMPONENT_INSTALLER_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_FLASH_COMPONENT_INSTALLER_H_
 
-class ComponentUpdateService;
-
 namespace base {
 class DictionaryValue;
 class Version;
 }
 
+namespace component_updater {
+
+class ComponentUpdateService;
+
 // Our job is to 1) find what Pepper flash is installed (if any) and 2) register
 // with the component updater to download the latest version when available.
 // The first part is IO intensive so we do it asynchronously in the file thread.
 void RegisterPepperFlashComponent(ComponentUpdateService* cus);
 
 // Returns true if this browser is compatible with the given Pepper Flash
 // manifest, with the version specified in the manifest in |version_out|.
 bool CheckPepperFlashManifest(const base::DictionaryValue& manifest,
                               base::Version* version_out);
 
+}  // namespace component_updater
+
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_FLASH_COMPONENT_INSTALLER_H_