Hacky slashy

base/memory/shared_memory_helper.cc

 // Copyright 2016 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/memory/shared_memory_helper.h"
 
+#include <unistd.h>
+
 #include "base/threading/thread_restrictions.h"
 
 namespace base {
 
 struct ScopedPathUnlinkerTraits {
   static const FilePath* InvalidValue() { return nullptr; }
 
   static void Free(const FilePath* path) {
     if (unlink(path->value().c_str()))
       PLOG(WARNING) << "unlink";
@@ skipping 72 matching lines @@
   if (*mapped_file == -1) {
     NOTREACHED() << "Call to dup failed, errno=" << errno;
   }
   *readonly_mapped_file = readonly_fd.release();
 
   return true;
 }
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace base