Change code in base (primarily unit tests) to use Sleep(TimeDelta).

base/threading/platform_thread_unittest.cc

Index: base/threading/platform_thread_unittest.cc
diff --git a/base/threading/platform_thread_unittest.cc b/base/threading/platform_thread_unittest.cc
index 4b494503e86273423ad7299c0d00e737219055e8..8fa387b24249ed7ef0163907f778df055d9c000f 100644
--- a/base/threading/platform_thread_unittest.cc
+++ b/base/threading/platform_thread_unittest.cc
@@ -59,7 +59,7 @@ class FunctionTestThread : public TrivialThread {
   virtual void ThreadMain() {
     thread_id_ = PlatformThread::CurrentId();
     PlatformThread::YieldCurrentThread();
-    PlatformThread::Sleep(50);
+    PlatformThread::Sleep(TimeDelta::FromMilliseconds(50));
 
     TrivialThread::ThreadMain();
   }