Componentize component_updater: Move some paths/constants to component.

chrome/browser/component_updater/update_checker.h

 // Copyright 2014 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_UPDATE_CHECKER_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_UPDATE_CHECKER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 18 matching lines @@
                               const std::string& error_message,
                               const UpdateResponse::Results& results)>
       UpdateCheckCallback;
 
   virtual ~UpdateChecker() {}
 
   // Initiates an update check for the |items_to_check|. |additional_attributes|
   // provides a way to customize the <request> element. This value is inserted
   // as-is, therefore it must be well-formed as an XML attribute string.
   virtual bool CheckForUpdates(
+      const std::string& chrome_version,
+      const std::string& platform_name,
       const std::vector<CrxUpdateItem*>& items_to_check,
       const std::string& additional_attributes) = 0;
 
   static scoped_ptr<UpdateChecker> Create(
       const GURL& url,
       net::URLRequestContextGetter* url_request_context_getter,
       const UpdateCheckCallback& update_check_callback);
 
  protected:
   UpdateChecker() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UpdateChecker);
 };
 
 }  // namespace component_updater
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_UPDATE_CHECKER_H_