Define and implement an interface for on-demand component updates.

chrome/browser/ui/webui/components_ui.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/webui/components_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 145 matching lines @@
 
   // Set up the chrome://components/ source.
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, CreateComponentsUIHTMLSource(profile));
 }
 
 // static
 void ComponentsUI::OnDemandUpdate(const std::string& component_id) {
   component_updater::ComponentUpdateService* cus =
       g_browser_process->component_updater();
-  cus->OnDemandUpdate(component_id);
+  cus->GetOnDemandUpdater().OnDemandUpdate(component_id);
 }
 
 // static
 base::RefCountedMemory* ComponentsUI::GetFaviconResourceBytes(
       ui::ScaleFactor scale_factor) {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytesForScale(IDR_PLUGINS_FAVICON, scale_factor);
 }