Remove old Sleep and PostDelayedTask interfaces that use int ms instead of TimeDelta.

base/sequenced_task_runner.h

Index: base/sequenced_task_runner.h
diff --git a/base/sequenced_task_runner.h b/base/sequenced_task_runner.h
index 0db9128fe47dc8c0e9622c94687175cf14657f71..5e0c89fc919f0dfca3283ed7d4a598a103032488 100644
--- a/base/sequenced_task_runner.h
+++ b/base/sequenced_task_runner.h
@@ -114,11 +114,6 @@ class BASE_EXPORT SequencedTaskRunner : public TaskRunner {
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const Closure& task,
-      int64 delay_ms) = 0;
-
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const Closure& task,
       base::TimeDelta delay) = 0;
 
   // Submits a non-nestable task to delete the given object.  Returns