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

chrome/browser/component_updater/sw_reporter_installer_win.cc

Index: chrome/browser/component_updater/sw_reporter_installer_win.cc
diff --git a/chrome/browser/component_updater/sw_reporter_installer_win.cc b/chrome/browser/component_updater/sw_reporter_installer_win.cc
index 578a70c0f7caea2b3ad8ade843af7f64330e3e70..8df0eca0d8d1facc9e055d0c0743b1b784cae9a6 100644
--- a/chrome/browser/component_updater/sw_reporter_installer_win.cc
+++ b/chrome/browser/component_updater/sw_reporter_installer_win.cc
@@ -22,6 +22,7 @@
 #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"
@@ -192,8 +193,12 @@ void RegisterComponent(ComponentUpdateService* cus, PrefService* prefs) {
   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);
 }