Replace Closure in TaskRunner::PostTask with OneShotCallback

base/threading/worker_pool_posix.cc

Index: base/threading/worker_pool_posix.cc
diff --git a/base/threading/worker_pool_posix.cc b/base/threading/worker_pool_posix.cc
index b0a2b87157a8c38add6bf5bec37236a5d53ab16e..cc06224bf1bb4a849ff78639dccd4b26f5880364 100644
--- a/base/threading/worker_pool_posix.cc
+++ b/base/threading/worker_pool_posix.cc
@@ -36,7 +36,7 @@ class WorkerPoolImpl {
   ~WorkerPoolImpl();
 
   void PostTask(const tracked_objects::Location& from_here,
-                const base::Closure& task,
+                OnceClosure task,
                 bool task_is_slow);
 
  private:
@@ -52,9 +52,9 @@ WorkerPoolImpl::~WorkerPoolImpl() {
 }
 
 void WorkerPoolImpl::PostTask(const tracked_objects::Location& from_here,
-                              const base::Closure& task,
+                              OnceClosure task,
                               bool task_is_slow) {
-  pool_->PostTask(from_here, task);
+  pool_->PostTask(from_here, std::move(task));
 }
 
 base::LazyInstance<WorkerPoolImpl> g_lazy_worker_pool =
@@ -90,7 +90,7 @@ void WorkerThread::ThreadMain() {
 
     tracked_objects::TaskStopwatch stopwatch;
     stopwatch.Start();
-    pending_task.task.Run();
+    std::move(pending_task.task).Run();
     stopwatch.Stop();
 
     tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(
@@ -105,9 +105,10 @@ void WorkerThread::ThreadMain() {
 
 // static
 bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
-                          const base::Closure& task,
+                          OnceClosure task,
                           bool task_is_slow) {
-  g_lazy_worker_pool.Pointer()->PostTask(from_here, task, task_is_slow);
+  g_lazy_worker_pool.Pointer()->PostTask(from_here, std::move(task),
+                                         task_is_slow);
   return true;
 }
 
@@ -140,8 +141,8 @@ void PosixDynamicThreadPool::Terminate() {
 
 void PosixDynamicThreadPool::PostTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task) {
-  PendingTask pending_task(from_here, task);
+    OnceClosure task) {
+  PendingTask pending_task(from_here, std::move(task));
   AddTask(&pending_task);
 }