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

base/message_loop_proxy_impl.h

Index: base/message_loop_proxy_impl.h
diff --git a/base/message_loop_proxy_impl.h b/base/message_loop_proxy_impl.h
index 140c244aa92a43dc48552d3bd53d57d6d851855c..fd28194ac210c6df186b9b5a0a1618f99ae64d93 100644
--- a/base/message_loop_proxy_impl.h
+++ b/base/message_loop_proxy_impl.h
@@ -21,17 +21,10 @@ class BASE_EXPORT MessageLoopProxyImpl : public MessageLoopProxy {
   // MessageLoopProxy implementation
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const base::Closure& task,
-                               int64 delay_ms) OVERRIDE;
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const base::Closure& task,
                                base::TimeDelta delay) OVERRIDE;
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
-      int64 delay_ms) OVERRIDE;
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
       base::TimeDelta delay) OVERRIDE;
   virtual bool RunsTasksOnCurrentThread() const OVERRIDE;