Pass Callback to TaskRunner by value and consume it on invocation (1)

base/sequenced_task_runner.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/sequenced_task_runner.h"
 
+#include <utility>
+
 #include "base/bind.h"
 
 namespace base {
 
 bool SequencedTaskRunner::PostNonNestableTask(
     const tracked_objects::Location& from_here,
-    const Closure& task) {
-  return PostNonNestableDelayedTask(from_here, task, base::TimeDelta());
+    Closure task) {
+  return PostNonNestableDelayedTask(from_here, std::move(task),
+                                    base::TimeDelta());
 }
 
 bool SequencedTaskRunner::DeleteOrReleaseSoonInternal(
     const tracked_objects::Location& from_here,
     void (*deleter)(const void*),
     const void* object) {
   return PostNonNestableTask(from_here, Bind(deleter, object));
 }
 
 OnTaskRunnerDeleter::OnTaskRunnerDeleter(
     scoped_refptr<SequencedTaskRunner> task_runner)
     : task_runner_(std::move(task_runner)) {
 }
 
 OnTaskRunnerDeleter::~OnTaskRunnerDeleter() {
 }
 
 OnTaskRunnerDeleter::OnTaskRunnerDeleter(OnTaskRunnerDeleter&&) = default;
 
 OnTaskRunnerDeleter& OnTaskRunnerDeleter::operator=(
     OnTaskRunnerDeleter&&) = default;
 
 }  // namespace base