Componentize component_updater: Replace content::BrowserThread usage with task runners

chrome/browser/component_updater/sw_reporter_installer_win.cc

 // Copyright (c) 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/sw_reporter_installer_win.h"
 
 #include <string>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
 #include "base/task_runner_util.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/worker_pool.h"
 #include "base/win/registry.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/component_updater/component_updater_service.h"
 #include "chrome/browser/component_updater/component_updater_utils.h"
 #include "chrome/browser/component_updater/default_component_installer.h"
 #include "components/component_updater/component_updater_paths.h"
 #include "components/component_updater/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 
@@ skipping 150 matching lines @@
   static wchar_t version_dir_[_MAX_PATH];
 };
 
 wchar_t SwReporterInstallerTraits::version_dir_[] = {};
 
 void RegisterComponent(ComponentUpdateService* cus, PrefService* prefs) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   scoped_ptr<ComponentInstallerTraits> traits(
       new SwReporterInstallerTraits(prefs));
   // |cus| will take ownership of |installer| during installer->Register(cus).
-  DefaultComponentInstaller* installer =
-      new DefaultComponentInstaller(traits.Pass());
+  DefaultComponentInstaller* installer = new DefaultComponentInstaller(
+      traits.Pass(),
+      content::BrowserThread::GetBlockingPool()
+          ->GetSequencedTaskRunnerWithShutdownBehavior(
+              content::BrowserThread::GetBlockingPool()->GetSequenceToken(),
+              base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
   installer->Register(cus);
 }
 
 // We need a conditional version of register component so that it can be called
 // back on the UI thread after validating on the File thread that the component
 // path exists and we must re-register on startup for example.
 void MaybeRegisterComponent(ComponentUpdateService* cus,
                             PrefService* prefs,
                             bool register_component) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 65 matching lines @@
     else
       ReportUmaStep(SW_REPORTER_RETRIED_TOO_MANY_TIMES);
   }
 }
 
 void RegisterPrefsForSwReporter(PrefRegistrySimple* registry) {
   registry->RegisterIntegerPref(prefs::kSwReporterExecuteTryCount, 0);
 }
 
 }  // namespace component_updater