Generate TaskScheduler::InitParams from components/task_scheduler_util/.

base/task_scheduler/scheduler_worker_pool_params.h

Index: base/task_scheduler/scheduler_worker_pool_params.h
diff --git a/base/task_scheduler/scheduler_worker_pool_params.h b/base/task_scheduler/scheduler_worker_pool_params.h
index daa1319cb26528766b32988ee5cd65c619c754a9..ca2aafc85edb6328d5bdd3ea05026b7e118b12af 100644
--- a/base/task_scheduler/scheduler_worker_pool_params.h
+++ b/base/task_scheduler/scheduler_worker_pool_params.h
@@ -60,7 +60,7 @@ class BASE_EXPORT SchedulerWorkerPoolParams final {
   StandbyThreadPolicy standby_thread_policy() const {
     return standby_thread_policy_;
   }
-  size_t max_threads() const { return max_threads_; }
+  int max_threads() const { return max_threads_; }
   TimeDelta suggested_reclaim_time() const { return suggested_reclaim_time_; }
   SchedulerBackwardCompatibility backward_compatibility() const {
     return backward_compatibility_;
@@ -71,7 +71,7 @@ class BASE_EXPORT SchedulerWorkerPoolParams final {
   std::string name_;
   ThreadPriority priority_hint_;
   StandbyThreadPolicy standby_thread_policy_;
-  size_t max_threads_;
+  int max_threads_;
   TimeDelta suggested_reclaim_time_;
   SchedulerBackwardCompatibility backward_compatibility_;
 };