| Index: base/allocator/allocator_shim_internals.h
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| diff --git a/base/allocator/allocator_shim_internals.h b/base/allocator/allocator_shim_internals.h
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..35df284b89ad1af9f55c226950c22a5170eca472
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| --- /dev/null
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| +++ b/base/allocator/allocator_shim_internals.h
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| @@ -0,0 +1,23 @@
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| +// Copyright 2016 The Chromium Authors. All rights reserved.
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| +// Use of this source code is governed by a BSD-style license that can be
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| +// found in the LICENSE file.
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| +
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| +#ifndef BASE_ALLOCATOR_ALLOCATOR_SHIM_INTERNALS_H_
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| +#define BASE_ALLOCATOR_ALLOCATOR_SHIM_INTERNALS_H_
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| +
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| +#if defined(__GNUC__)
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| +
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| +#include <sys/cdefs.h>  // for __THROW
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| +
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| +#ifndef __THROW /* Not a glibc system */
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| +#define __THROW
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| +#endif
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| +
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| +// Shim layer symbols need to be ALWAYS exported, regardless of component build.
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| +#define SHIM_ALWAYS_EXPORT __attribute__((visibility("default")))
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| +
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| +#define SHIM_ALIAS_SYMBOL(fn) __attribute__((alias(#fn)))
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| +
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| +#endif  // __GNUC__
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| +
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| +#endif  // BASE_ALLOCATOR_ALLOCATOR_SHIM_INTERNALS_H_
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| 
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