Disallow posting tasks to SequencedWorkerPools by default.

components/task_scheduler_util/initialization_util.cc

Index: components/task_scheduler_util/initialization_util.cc
diff --git a/components/task_scheduler_util/initialization_util.cc b/components/task_scheduler_util/initialization_util.cc
index 8893d47dd86188c4426978a192a62992bc618c18..967acef935f784591bcebcbbd17b1c2e6693c5ea 100644
--- a/components/task_scheduler_util/initialization_util.cc
+++ b/components/task_scheduler_util/initialization_util.cc
@@ -194,7 +194,9 @@ void InitializeDefaultBrowserTaskScheduler() {
           switches::kDisableBrowserTaskScheduler) &&
       sequenced_worker_pool_param != variation_params.end() &&
       sequenced_worker_pool_param->second == "true") {
-    base::SequencedWorkerPool::RedirectToTaskSchedulerForProcess();
+    base::SequencedWorkerPool::EnableWithRedirectionToTaskSchedulerForProcess();
+  } else {
+    base::SequencedWorkerPool::EnableForProcess();
   }
 }