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

base/task_scheduler/scheduler_single_thread_task_runner_manager.cc

Index: base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
diff --git a/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc b/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
index 6a2676fb49b9e20bb8f06ea8b52a4839a76a8922..f0f846cddb7135ed7b7e1a558071ab10d6dca121 100644
--- a/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
+++ b/base/task_scheduler/scheduler_single_thread_task_runner_manager.cc
@@ -7,6 +7,7 @@
 #include <algorithm>
 #include <memory>
 #include <string>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ -147,9 +148,9 @@ class SchedulerSingleThreadTaskRunnerManager::SchedulerSingleThreadTaskRunner
 
   // SingleThreadTaskRunner:
   bool PostDelayedTask(const tracked_objects::Location& from_here,
-                       const Closure& closure,
+                       Closure closure,
                        TimeDelta delay) override {
-    auto task = MakeUnique<Task>(from_here, closure, traits_, delay);
+    auto task = MakeUnique<Task>(from_here, std::move(closure), traits_, delay);
     task->single_thread_task_runner_ref = this;
 
     if (!outer_->task_tracker_->WillPostTask(task.get()))
@@ -166,10 +167,10 @@ class SchedulerSingleThreadTaskRunnerManager::SchedulerSingleThreadTaskRunner
   }
 
   bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
-                                  const Closure& closure,
+                                  Closure closure,
                                   base::TimeDelta delay) override {
     // Tasks are never nested within the task scheduler.
-    return PostDelayedTask(from_here, closure, delay);
+    return PostDelayedTask(from_here, std::move(closure), delay);
   }
 
   bool RunsTasksOnCurrentThread() const override {