Migrate base::TaskRunner from Closure to OnceClosure

base/task_scheduler/scheduler_single_thread_task_runner_manager.cc

Index: base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
diff --git a/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc b/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
index 059e459419b0f47946e3373278b725ea047766d1..d4c26d6a404e04110ed0c38b35dbe7d798024208 100644
--- a/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
+++ b/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
@@ -253,7 +253,7 @@ class SchedulerSingleThreadTaskRunnerManager::SchedulerSingleThreadTaskRunner
 
   // SingleThreadTaskRunner:
   bool PostDelayedTask(const tracked_objects::Location& from_here,
-                       Closure closure,
+                       OnceClosure closure,
                        TimeDelta delay) override {
     auto task = MakeUnique<Task>(from_here, std::move(closure), traits_, delay);
     task->single_thread_task_runner_ref = this;
@@ -272,7 +272,7 @@ class SchedulerSingleThreadTaskRunnerManager::SchedulerSingleThreadTaskRunner
   }
 
   bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
-                                  Closure closure,
+                                  OnceClosure closure,
                                   TimeDelta delay) override {
     // Tasks are never nested within the task scheduler.
     return PostDelayedTask(from_here, std::move(closure), delay);