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

third_party/WebKit/Source/platform/scheduler/test/lazy_scheduler_message_loop_delegate_for_tests.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/test/lazy_scheduler_message_loop_delegate_for_tests.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/time/default_tick_clock.h"
@@ skipping 50 matching lines @@
   if (HasMessageLoop() && base::MessageLoop::current() == message_loop_)
     message_loop_->SetTaskRunner(original_task_runner_);
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::HasMessageLoop() const {
   return message_loop_ != nullptr;
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::PostDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
   EnsureMessageLoop();
-  return original_task_runner_->PostDelayedTask(from_here, task, delay);
+  return original_task_runner_->PostDelayedTask(from_here, std::move(task),
+                                                delay);
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::PostNonNestableDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
   EnsureMessageLoop();
-  return original_task_runner_->PostNonNestableDelayedTask(from_here, task,
-                                                           delay);
+  return original_task_runner_->PostNonNestableDelayedTask(
+      from_here, std::move(task), delay);
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::RunsTasksOnCurrentThread()
     const {
   return thread_id_ == base::PlatformThread::CurrentId();
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::IsNested() const {
   return EnsureMessageLoop()->IsNested();
 }
@@ skipping 16 matching lines @@
   }
   message_loop_->RemoveNestingObserver(observer);
 }
 
 base::TimeTicks LazySchedulerMessageLoopDelegateForTests::NowTicks() {
   return time_source_->NowTicks();
 }
 
 }  // namespace scheduler
 }  // namespace blink