iwyu: Cleanup in the following files:

base/file_descriptor_shuffle.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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/file_descriptor_shuffle.h"
 
-#include <errno.h>
 #include <unistd.h>
+#include <stddef.h>
+#include <ostream>
 
 #include "base/eintr_wrapper.h"
 #include "base/logging.h"
 
 namespace base {
 
 bool PerformInjectiveMultimapDestructive(
     InjectiveMultimap* m, InjectionDelegate* delegate) {
   static const size_t kMaxExtraFDs = 16;
   int extra_fds[kMaxExtraFDs];
@@ skipping 67 matching lines @@
 bool FileDescriptorTableInjection::Move(int src, int dest) {
   return HANDLE_EINTR(dup2(src, dest)) != -1;
 }
 
 void FileDescriptorTableInjection::Close(int fd) {
   int ret = HANDLE_EINTR(close(fd));
   DPCHECK(ret == 0);
 }
 
 }  // namespace base