Define EnabledComponentUpdates group policy for the component updater.

chrome/browser/component_updater/chrome_component_updater_configurator.cc

 // 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.
 
 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/version.h"
 #if defined(OS_WIN)
 #include "base/win/win_util.h"
 #endif
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/component_updater/component_patcher_operation_out_of_process.h"
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
 #include "chrome/common/channel_info.h"
+#include "chrome/common/pref_names.h"
 #if defined(OS_WIN)
 #include "chrome/installer/util/google_update_settings.h"
 #endif
 #include "components/component_updater/configurator_impl.h"
+#include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace component_updater {
 
 namespace {
 
 class ChromeConfigurator : public update_client::Configurator {
  public:
   ChromeConfigurator(const base::CommandLine* cmdline,
@@ skipping 23 matching lines @@
   bool EnabledBackgroundDownloader() const override;
   bool EnabledCupSigning() const override;
   scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
       const override;
   PrefService* GetPrefService() const override;
 
  private:
   friend class base::RefCountedThreadSafe<ChromeConfigurator>;
 
   ConfiguratorImpl configurator_impl_;
-
   PrefService* pref_service_;  // This member is not owned by this class.
 
   ~ChromeConfigurator() override {}
 };
 
 // Allows the component updater to use non-encrypted communication with the
 // update backend. The security of the update checks is enforced using
 // a custom message signing protocol and it does not depend on using HTTPS.
 ChromeConfigurator::ChromeConfigurator(
     const base::CommandLine* cmdline,
@@ skipping 78 matching lines @@
 scoped_refptr<update_client::OutOfProcessPatcher>
 ChromeConfigurator::CreateOutOfProcessPatcher() const {
   return make_scoped_refptr(new ChromeOutOfProcessPatcher);
 }
 
 bool ChromeConfigurator::EnabledDeltas() const {
   return configurator_impl_.EnabledDeltas();
 }
 
 bool ChromeConfigurator::EnabledComponentUpdates() const {
-  return configurator_impl_.EnabledComponentUpdates();
+  return pref_service_->GetBoolean(prefs::kComponentUpdatesEnabled);
 }
 
 bool ChromeConfigurator::EnabledBackgroundDownloader() const {
   return configurator_impl_.EnabledBackgroundDownloader();
 }
 
 bool ChromeConfigurator::EnabledCupSigning() const {
   return configurator_impl_.EnabledCupSigning();
 }
 
 // Returns a task runner to run blocking tasks. The task runner continues to run
 // after the browser shuts down, until the OS terminates the process. This
 // imposes certain requirements for the code using the task runner, such as
 // not accessing any global browser state while the code is running.
 scoped_refptr<base::SequencedTaskRunner>
 ChromeConfigurator::GetSequencedTaskRunner() const {
   return content::BrowserThread::GetBlockingPool()
       ->GetSequencedTaskRunnerWithShutdownBehavior(
           base::SequencedWorkerPool::GetSequenceToken(),
           base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN);
 }
 
 PrefService* ChromeConfigurator::GetPrefService() const {
   DCHECK(pref_service_);
   return pref_service_;
 }
 
 }  // namespace
 
+void RegisterPrefsForChromeComponentUpdaterConfigurator(
+    PrefRegistrySimple* registry) {
+  // The component updates are enabled by default, if the preference is not set.
+  registry->RegisterBooleanPref(prefs::kComponentUpdatesEnabled, true);
+}
+
 scoped_refptr<update_client::Configurator>
 MakeChromeComponentUpdaterConfigurator(
     const base::CommandLine* cmdline,
     net::URLRequestContextGetter* context_getter,
     PrefService* pref_service) {
   return new ChromeConfigurator(cmdline, context_getter, pref_service);
 }
 
 }  // namespace component_updater