[reference - do not submit] Always create four pools in TaskSchedulerImpl.

base/threading/sequenced_worker_pool_unittest.cc

Index: base/threading/sequenced_worker_pool_unittest.cc
diff --git a/base/threading/sequenced_worker_pool_unittest.cc b/base/threading/sequenced_worker_pool_unittest.cc
index 5f9c9bfd2ad86229083895c82a99d3c4df686934..8430d2965c15cfd1fc5b21d3999dc4a436572a90 100644
--- a/base/threading/sequenced_worker_pool_unittest.cc
+++ b/base/threading/sequenced_worker_pool_unittest.cc
@@ -244,14 +244,12 @@ class SequencedWorkerPoolTest
 
   void SetUp() override {
     if (RedirectedToTaskScheduler()) {
-      std::vector<SchedulerWorkerPoolParams> worker_pool_params;
-      worker_pool_params.emplace_back(
-          "SchedulerWorkerPoolName", ThreadPriority::NORMAL,
+      const SchedulerWorkerPoolParams worker_pool_params(
           SchedulerWorkerPoolParams::StandbyThreadPolicy::LAZY,
-          kNumWorkerThreads, TimeDelta::Max());
+          static_cast<int>(kNumWorkerThreads), TimeDelta::Max());
       TaskScheduler::CreateAndSetDefaultTaskScheduler(
-          std::move(worker_pool_params),
-          base::Bind([](const TaskTraits&) -> size_t { return 0U; }));
+          "SequencedWorkerPoolTest", {worker_pool_params, worker_pool_params,
+                                      worker_pool_params, worker_pool_params});
 
       // Unit tests run in an environment where SequencedWorkerPool is enabled
       // without redirection to TaskScheduler. For the current unit test,