CancelableTaskTracker::PostDelayedTask() support

base/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 "base/task_runner.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/threading/post_task_and_reply_impl.h"
 
@@ skipping 35 matching lines @@
 }
 
 bool TaskRunner::PostTaskAndReply(
     const tracked_objects::Location& from_here,
     const Closure& task,
     const Closure& reply) {
   return PostTaskAndReplyTaskRunner(this).PostTaskAndReply(
       from_here, task, reply);
 }
 
+bool TaskRunner::PostDelayedTaskAndReply(
+    const tracked_objects::Location& from_here,
+    const Closure& task,
+    const Closure& reply,
+    TimeDelta delay) {
+  return PostTaskAndReplyTaskRunner(this).PostDelayedTaskAndReply(
+      from_here, task, reply, delay);
+}
+
 TaskRunner::TaskRunner() {}
 
 TaskRunner::~TaskRunner() {}
 
 void TaskRunner::OnDestruct() const {
   delete this;
 }
 
 void TaskRunnerTraits::Destruct(const TaskRunner* task_runner) {
   task_runner->OnDestruct();
 }
 
 }  // namespace base