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

net/quic/test_tools/test_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 "net/quic/test_tools/test_task_runner.h"
 
 #include <algorithm>
+#include <utility>
 
 #include "net/quic/test_tools/mock_clock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 namespace test {
 
 TestTaskRunner::TestTaskRunner(MockClock* clock) : clock_(clock) {}
 
 TestTaskRunner::~TestTaskRunner() {}
 
 bool TestTaskRunner::PostDelayedTask(const tracked_objects::Location& from_here,
-                                     const base::Closure& task,
+                                     base::Closure task,
                                      base::TimeDelta delay) {
   EXPECT_GE(delay, base::TimeDelta());
-  tasks_.push_back(PostedTask(from_here, task, clock_->NowInTicks(), delay,
-                              base::TestPendingTask::NESTABLE));
+  tasks_.push_back(PostedTask(from_here, std::move(task), clock_->NowInTicks(),
+                              delay, base::TestPendingTask::NESTABLE));
   return false;
 }
 
 bool TestTaskRunner::RunsTasksOnCurrentThread() const {
   return true;
 }
 
 const std::vector<PostedTask>& TestTaskRunner::GetPostedTasks() const {
   return tasks_;
 }
@@ skipping 20 matching lines @@
 
 }  // namespace
 
 std::vector<PostedTask>::iterator TestTaskRunner::FindNextTask() {
   return std::min_element(tasks_.begin(), tasks_.end(),
                           ShouldRunBeforeLessThan());
 }
 
 }  // namespace test
 }  // namespace net