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

base/sequenced_task_runner.cc

Index: base/sequenced_task_runner.cc
diff --git a/base/sequenced_task_runner.cc b/base/sequenced_task_runner.cc
index bab7d1ca7c9c2b75c72016ff2f7d22edc0fc8059..00d404881597a1d1c65efd0939523f80e15e68b4 100644
--- a/base/sequenced_task_runner.cc
+++ b/base/sequenced_task_runner.cc
@@ -11,7 +11,7 @@ namespace base {
 bool SequencedTaskRunner::PostNonNestableTask(
     const tracked_objects::Location& from_here,
     const Closure& task) {
-  return PostNonNestableDelayedTask(from_here, task, 0);
+  return PostNonNestableDelayedTask(from_here, task, base::TimeDelta());
 }
 
 bool SequencedTaskRunner::DeleteSoonInternal(