CancelableTaskTracker::PostDelayedTask() support

base/task/cancelable_task_tracker.h

Index: base/task/cancelable_task_tracker.h
diff --git a/base/task/cancelable_task_tracker.h b/base/task/cancelable_task_tracker.h
index b8a8b70e333922b41d5e7019070f09e18a6a12e4..093357ccc1cecbc1b347bb062f25c8c24fbba6c1 100644
--- a/base/task/cancelable_task_tracker.h
+++ b/base/task/cancelable_task_tracker.h
@@ -43,6 +43,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread_checker.h"
+#include "base/time/time.h"
 
 namespace tracked_objects {
 class Location;
@@ -70,6 +71,11 @@ class BASE_EXPORT CancelableTaskTracker {
                   const tracked_objects::Location& from_here,
                   const base::Closure& task);
 
+  TaskId PostDelayedTask(base::TaskRunner* task_runner,
+                         const tracked_objects::Location& from_here,
+                         const base::Closure& task,
+                         const TimeDelta& delay);
+
   TaskId PostTaskAndReply(base::TaskRunner* task_runner,
                           const tracked_objects::Location& from_here,
                           const base::Closure& task,
@@ -124,6 +130,11 @@ class BASE_EXPORT CancelableTaskTracker {
  private:
   void Track(TaskId id, base::CancellationFlag* flag);
   void Untrack(TaskId id);
+  TaskId PostDelayedTaskAndReply(base::TaskRunner* task_runner,
+                                 const tracked_objects::Location& from_here,
+                                 const base::Closure& task,
+                                 const base::Closure& reply,
+                                 const TimeDelta& delay);
 
   base::hash_map<TaskId, base::CancellationFlag*> task_flags_;