CancelableTaskTracker::PostDelayedTask() support

base/threading/post_task_and_reply_impl.h

Index: base/threading/post_task_and_reply_impl.h
diff --git a/base/threading/post_task_and_reply_impl.h b/base/threading/post_task_and_reply_impl.h
index 076a46d69e86619be6f585f7854072ef6a5e0ae8..c53a9ee9d639b957710169e9d9a87178adc6900e 100644
--- a/base/threading/post_task_and_reply_impl.h
+++ b/base/threading/post_task_and_reply_impl.h
@@ -10,6 +10,7 @@
 
 #include "base/callback_forward.h"
 #include "base/location.h"
+#include "base/time/time.h"
 
 namespace base {
 namespace internal {
@@ -31,9 +32,18 @@ class PostTaskAndReplyImpl {
                         const Closure& task,
                         const Closure& reply);
 
+  // Implementation for MessageLoopProxy::PostDelayedTaskAndReply.
+  bool PostDelayedTaskAndReply(const tracked_objects::Location& from_here,
+                              const Closure& task,
+                              const Closure& reply,
+                              const TimeDelta& delay);
+
  private:
   virtual bool PostTask(const tracked_objects::Location& from_here,
                         const Closure& task) = 0;
+  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
+                               const Closure& task,
+                               const TimeDelta& delay) = 0;
 };
 
 }  // namespace internal