TaskScheduler: Add delayed run time to the constructor of Task.

base/task_scheduler/task.cc

 // Copyright 2016 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 "base/task_scheduler/task.h"
 
 namespace base {
 namespace internal {
 
 Task::Task(const tracked_objects::Location& posted_from,
            const Closure& task,
-           const TaskTraits& traits)
+           const TaskTraits& traits,
+           const TimeTicks& delayed_run_time)
     : PendingTask(posted_from,
                   task,
-                  TimeTicks(),  // No delayed run time.
-                  false),       // Not nestable.
+                  delayed_run_time,
+                  false),  // Not nestable.
       traits(traits) {}
 
 Task::~Task() = default;
 
 }  // namespace internal
 }  // namespace base