Move OS_WIN specific logic in MessagePumpDefault::Run into waitable_event_win.cc

base/synchronization/waitable_event_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/synchronization/waitable_event.h"
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
 #include "base/threading/platform_thread.h"
@@ skipping 142 matching lines @@
   TimeTicks start = TimeTicks::Now();
   PlatformThread::Create(0, &signaler, &thread);
 
   ev->TimedWait(TimeDelta::Max());
   EXPECT_GE(TimeTicks::Now() - start, thread_delay);
   delete ev;
 
   PlatformThread::Join(thread);
 }
 
+// Tests that a sub-ms TimedWait doesn't time out promptly.
+TEST(WaitableEventTest, SubMsTimedWait) {
+  WaitableEvent ev(WaitableEvent::ResetPolicy::AUTOMATIC,
+                   WaitableEvent::InitialState::NOT_SIGNALED);
+
+  TimeDelta delay = TimeDelta::FromMicroseconds(900);
+  TimeTicks start = TimeTicks::Now();
+  ev.TimedWait(delay);
+  EXPECT_GE(TimeTicks::Now() - start, delay);
+}
+
 }  // namespace base