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base/files/file_posix_hooks_internal.h

Index: base/files/file_posix_hooks_internal.h
diff --git a/base/files/file_posix_hooks_internal.h b/base/files/file_posix_hooks_internal.h
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+// Copyright 2014 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.
+
+#ifndef BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_
+#define BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_
+
+#include "base/base_export.h"
+
+namespace base {
+
+// Define empty hooks for blacklisting file descriptors used in base::File.
+// These functions should be declared 'weak', i.e. the functions declared in
+// a default way would have precedence over the weak ones at link time. This
+// works for both static and dynamic linking.
+// TODO(pasko): Remove these hooks when crbug.com/424562 is fixed.
+//
+// With compilers other than GCC/Clang define strong no-op symbols for
+// simplicity.
+#if defined(COMPILER_GCC)
+#define ATTRIBUTE_WEAK __attribute__ ((weak))
+#else
+#define ATTRIBUTE_WEAK
+#endif
+BASE_EXPORT void ProtectFileDescriptor(int fd) ATTRIBUTE_WEAK;
+BASE_EXPORT void UnprotectFileDescriptor(int fd) ATTRIBUTE_WEAK;
+#undef ATTRIBUTE_WEAK
+
+}  // namespace base
+
+#endif  // BASE_FILES_FILE_POSIX_HOOKS_INTERNAL_H_