Split Closure part of TestPendingTask out of the struct

base/test/test_pending_task.h

-// 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.
-
-#ifndef BASE_TEST_TEST_PENDING_TASK_H_
-#define BASE_TEST_TEST_PENDING_TASK_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/location.h"
-#include "base/time/time.h"
-#include "base/trace_event/trace_event_argument.h"
-
-namespace base {
-
-// TestPendingTask is a helper class for test TaskRunner
-// implementations.  See test_simple_task_runner.h for example usage.
-
-struct TestPendingTask {
-  enum TestNestability { NESTABLE, NON_NESTABLE };
-
-  TestPendingTask();
-  TestPendingTask(const TestPendingTask& other);
-  TestPendingTask(const tracked_objects::Location& location,
-                  const Closure& task,
-                  TimeTicks post_time,
-                  TimeDelta delay,
-                  TestNestability nestability);
-  ~TestPendingTask();
-
-  // Returns post_time + delay.
-  TimeTicks GetTimeToRun() const;
-
-  // Returns true if this task is nestable and |other| isn't, or if
-  // this task's time to run is strictly earlier than |other|'s time
-  // to run.
-  //
-  // Note that two tasks may both have the same nestability and delay.
-  // In that case, the caller must use some other criterion (probably
-  // the position in some queue) to break the tie.  Conveniently, the
-  // following STL functions already do so:
-  //
-  //   - std::min_element
-  //   - std::stable_sort
-  //
-  // but the following STL functions don't:
-  //
-  //   - std::max_element
-  //   - std::sort.
-  bool ShouldRunBefore(const TestPendingTask& other) const;
-
-  tracked_objects::Location location;
-  Closure task;
-  TimeTicks post_time;
-  TimeDelta delay;
-  TestNestability nestability;
-
-  // Functions for using test pending task with tracing, useful in unit
-  // testing.
-  void AsValueInto(base::trace_event::TracedValue* state) const;
-  std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
-  std::string ToString() const;
-};
-
-// gtest helpers which allow pretty printing of the tasks, very useful in unit
-// testing.
-std::ostream& operator<<(std::ostream& os, const TestPendingTask& task);
-void PrintTo(const TestPendingTask& task, std::ostream* os);
-
-}  // namespace base
-
-#endif  // BASE_TEST_TEST_PENDING_TASK_H_