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

base/threading/platform_thread_win.cc

Index: base/threading/platform_thread_win.cc
diff --git a/base/threading/platform_thread_win.cc b/base/threading/platform_thread_win.cc
index bd4282f68ca7f4218667f9ef9806a8a7332855f9..2a9d6a416227623de00c0b5bc43c3834a2a17839 100644
--- a/base/threading/platform_thread_win.cc
+++ b/base/threading/platform_thread_win.cc
@@ -109,11 +109,6 @@ void PlatformThread::YieldCurrentThread() {
 }
 
 // static
-void PlatformThread::Sleep(int duration_ms) {
-  ::Sleep(duration_ms);
-}
-
-// static
 void PlatformThread::Sleep(TimeDelta duration) {
   ::Sleep(duration.InMillisecondsRoundedUp());
 }