Revert 140102 - Remove old PostDelayedTask interfaces that use int ms instead of TimeDelta.

base/threading/sequenced_worker_pool.h

Index: base/threading/sequenced_worker_pool.h
===================================================================
--- base/threading/sequenced_worker_pool.h	(revision 140108)
+++ base/threading/sequenced_worker_pool.h	(working copy)
@@ -231,6 +231,9 @@
   // TaskRunner implementation.  Forwards to PostWorkerTask().
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const Closure& task,
+                               int64 delay_ms) OVERRIDE;
+  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
+                               const Closure& task,
                                TimeDelta delay) OVERRIDE;
   virtual bool RunsTasksOnCurrentThread() const OVERRIDE;