Add function support for Sleep and MessageLoop with TimeDelta input.

base/threading/thread_unittest.cc

Index: base/threading/thread_unittest.cc
diff --git a/base/threading/thread_unittest.cc b/base/threading/thread_unittest.cc
index a1a237f23c67c1d0c396a2294ed807cac695408e..be5ad90fde48c7dd12d414b7469f638f7e57fed0 100644
--- a/base/threading/thread_unittest.cc
+++ b/base/threading/thread_unittest.cc
@@ -177,8 +177,10 @@ TEST_F(ThreadTest, TwoTasks) {
     // Test that all events are dispatched before the Thread object is
     // destroyed.  We do this by dispatching a sleep event before the
     // event that will toggle our sentinel value.
-    a.message_loop()->PostTask(FROM_HERE,
-                               base::Bind(&base::PlatformThread::Sleep, 20));
+    a.message_loop()->PostTask(
+        FROM_HERE,
+        base::Bind(static_cast<void (*)(int)>(&base::PlatformThread::Sleep),
+                   20));
     a.message_loop()->PostTask(FROM_HERE, base::Bind(&ToggleValue,
                                                      &was_invoked));
   }