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

chrome/test/base/testing_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.
 
 // An implementation of BrowserProcess for unit tests that fails for most
 // services. By preventing creation of services, we reduce dependencies and
 // keep the profile clean. Clients of this class must handle the NULL return
 // value, however.
 
 #ifndef CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_H_
@@ skipping 88 matching lines @@
   virtual DownloadRequestLimiter* download_request_limiter() OVERRIDE;
 
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   virtual void StartAutoupdateTimer() OVERRIDE {}
 #endif
 
   virtual ChromeNetLog* net_log() OVERRIDE;
   virtual prerender::PrerenderTracker* prerender_tracker() OVERRIDE;
   virtual ComponentUpdateService* component_updater() OVERRIDE;
   virtual CRLSetFetcher* crl_set_fetcher() OVERRIDE;
+  virtual PnaclComponentInstaller* pnacl_component_installer() OVERRIDE;
   virtual BookmarkPromptController* bookmark_prompt_controller() OVERRIDE;
   virtual chrome::MediaFileSystemRegistry*
       media_file_system_registry() OVERRIDE;
   virtual void PlatformSpecificCommandLineProcessing(
       const CommandLine& command_line) OVERRIDE;
   virtual bool created_local_state() const OVERRIDE;
 
   // Set the local state for tests. Consumer is responsible for cleaning it up
   // afterwards (using ScopedTestingLocalState, for example).
   void SetLocalState(PrefService* local_state);
@@ skipping 30 matching lines @@
 
   // The following objects are not owned by TestingBrowserProcess:
   PrefService* local_state_;
   IOThread* io_thread_;
   net::URLRequestContextGetter* system_request_context_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingBrowserProcess);
 };
 
 #endif  // CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_H_