Pass Callback by value on PostTaskAndReply family

base/task_scheduler/post_task.cc

 // Copyright 2016 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/task_scheduler/post_task.h"
 
 #include "base/task_scheduler/task_scheduler.h"
 #include "base/threading/post_task_and_reply_impl.h"
 
 namespace base {
@@ skipping 22 matching lines @@
   PostDelayedTask(from_here, task, TimeDelta());
 }
 
 void PostDelayedTask(const tracked_objects::Location& from_here,
                      const Closure& task,
                      TimeDelta delay) {
   PostDelayedTaskWithTraits(from_here, TaskTraits(), task, delay);
 }
 
 void PostTaskAndReply(const tracked_objects::Location& from_here,
-                      const Closure& task,
-                      const Closure& reply) {
-  PostTaskWithTraitsAndReply(from_here, TaskTraits(), task, reply);
+                      Closure task,
+                      Closure reply) {
+  PostTaskWithTraitsAndReply(from_here, TaskTraits(), std::move(task),
+                             std::move(reply));
 }
 
 void PostTaskWithTraits(const tracked_objects::Location& from_here,
                         const TaskTraits& traits,
                         const Closure& task) {
   PostDelayedTaskWithTraits(from_here, traits, task, TimeDelta());
 }
 
 void PostDelayedTaskWithTraits(const tracked_objects::Location& from_here,
                                const TaskTraits& traits,
                                const Closure& task,
                                TimeDelta delay) {
   TaskScheduler::GetInstance()->PostDelayedTaskWithTraits(from_here, traits,
                                                           task, delay);
 }
 
 void PostTaskWithTraitsAndReply(const tracked_objects::Location& from_here,
                                 const TaskTraits& traits,
-                                const Closure& task,
-                                const Closure& reply) {
-  PostTaskAndReplyTaskRunner(traits).PostTaskAndReply(from_here, task, reply);
+                                Closure task,
+                                Closure reply) {
+  PostTaskAndReplyTaskRunner(traits).PostTaskAndReply(
+      from_here, std::move(task), std::move(reply));
 }
 
 scoped_refptr<TaskRunner> CreateTaskRunnerWithTraits(const TaskTraits& traits) {
   return TaskScheduler::GetInstance()->CreateTaskRunnerWithTraits(traits);
 }
 
 scoped_refptr<SequencedTaskRunner> CreateSequencedTaskRunnerWithTraits(
     const TaskTraits& traits) {
   return TaskScheduler::GetInstance()->CreateSequencedTaskRunnerWithTraits(
       traits);
 }
 
 scoped_refptr<SingleThreadTaskRunner> CreateSingleThreadTaskRunnerWithTraits(
     const TaskTraits& traits) {
   return TaskScheduler::GetInstance()->CreateSingleThreadTaskRunnerWithTraits(
       traits);
 }
 
 }  // namespace base