run iwyu on base!

base/synchronization/waitable_event_watcher_posix.cc

 // Copyright (c) 2011 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_watcher.h"
+#include <stdbool.h>
+#include <stddef.h>
 
+#include "base/logging.h"
 #include "base/message_loop.h"
+#include "base/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/synchronization/waitable_event_watcher.h"
+#include "base/task.h"
+#include "base/tracked.h"
 
 namespace base {
 
 // -----------------------------------------------------------------------------
 // WaitableEventWatcher (async waits).
 //
 // The basic design is that we add an AsyncWaiter to the wait-list of the event.
 // That AsyncWaiter has a pointer to MessageLoop, and a Task to be posted to it.
 // The MessageLoop ends up running the task, which calls the delegate.
 //
@@ skipping 251 matching lines @@
 // -----------------------------------------------------------------------------
 // This is called when the MessageLoop which the callback will be run it is
 // deleted. We need to cancel the callback as if we had been deleted, but we
 // will still be deleted at some point in the future.
 // -----------------------------------------------------------------------------
 void WaitableEventWatcher::WillDestroyCurrentMessageLoop() {
   StopWatching();
 }
 
 }  // namespace base