Turn on component updater on chromeos, only for the pnacl component.

chrome/browser/browser_process.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.
 
 // This interface is for managing the global services of the application. Each
 // service is lazily created when requested the first time. The service getters
 // will return NULL if the service is not available, so callers must check for
 // this condition.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_H_
@@ skipping 13 matching lines @@
 class ComponentUpdateService;
 class DownloadRequestLimiter;
 class DownloadStatusUpdater;
 class GLStringManager;
 class GpuModeManager;
 class IconManager;
 class IntranetRedirectDetector;
 class IOThread;
 class MetricsService;
 class NotificationUIManager;
+class PnaclComponentInstaller;
 class PrefRegistrySimple;
 class PrefService;
 class Profile;
 class ProfileManager;
 class RenderWidgetSnapshotTaker;
 class SafeBrowsingService;
 class StatusTray;
 class WatchDogThread;
 
 namespace chrome {
@@ skipping 167 matching lines @@
 #endif
 
   virtual ChromeNetLog* net_log() = 0;
 
   virtual prerender::PrerenderTracker* prerender_tracker() = 0;
 
   virtual ComponentUpdateService* component_updater() = 0;
 
   virtual CRLSetFetcher* crl_set_fetcher() = 0;
 
+  virtual PnaclComponentInstaller* pnacl_component_installer() = 0;
+
   virtual BookmarkPromptController* bookmark_prompt_controller() = 0;
 
   virtual chrome::MediaFileSystemRegistry* media_file_system_registry() = 0;
 
   virtual void PlatformSpecificCommandLineProcessing(
       const CommandLine& command_line) = 0;
 
   virtual bool created_local_state() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };
 
 extern BrowserProcess* g_browser_process;
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_H_