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

third_party/WebKit/Source/platform/scheduler/child/scheduler_tqm_delegate_impl.cc

 // Copyright 2015 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 "platform/scheduler/child/scheduler_tqm_delegate_impl.h"
 
 #include <utility>
 
 namespace blink {
 namespace scheduler {
@@ skipping 22 matching lines @@
   message_loop_->SetTaskRunner(task_runner);
 }
 
 void SchedulerTqmDelegateImpl::RestoreDefaultTaskRunner() {
   if (base::MessageLoop::current() == message_loop_)
     message_loop_->SetTaskRunner(message_loop_task_runner_);
 }
 
 bool SchedulerTqmDelegateImpl::PostDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
-  return message_loop_task_runner_->PostDelayedTask(from_here, task, delay);
+  return message_loop_task_runner_->PostDelayedTask(from_here, std::move(task),
+                                                    delay);
 }
 
 bool SchedulerTqmDelegateImpl::PostNonNestableDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
-  return message_loop_task_runner_->PostNonNestableDelayedTask(from_here, task,
-                                                               delay);
+  return message_loop_task_runner_->PostNonNestableDelayedTask(
+      from_here, std::move(task), delay);
 }
 
 bool SchedulerTqmDelegateImpl::RunsTasksOnCurrentThread() const {
   return message_loop_task_runner_->RunsTasksOnCurrentThread();
 }
 
 bool SchedulerTqmDelegateImpl::IsNested() const {
   return message_loop_->IsNested();
 }
 
 void SchedulerTqmDelegateImpl::AddNestingObserver(
     base::MessageLoop::NestingObserver* observer) {
   message_loop_->AddNestingObserver(observer);
 }
 
 void SchedulerTqmDelegateImpl::RemoveNestingObserver(
     base::MessageLoop::NestingObserver* observer) {
   message_loop_->RemoveNestingObserver(observer);
 }
 
 base::TimeTicks SchedulerTqmDelegateImpl::NowTicks() {
   return time_source_->NowTicks();
 }
 
 }  // namespace scheduler
 }  // namespace blink