[Experimental, DO NOT LAND] bucket num 4

base/memory/address_hasher.h

Index: base/memory/address_hasher.h
diff --git a/base/memory/address_hasher.h b/base/memory/address_hasher.h
new file mode 100644
index 0000000000000000000000000000000000000000..6ee9360516ccb8308c4c89077f393dc3fec5ad1b
--- /dev/null
+++ b/base/memory/address_hasher.h
@@ -0,0 +1,19 @@
+// Copyright 2017 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_MEMORY_ADDRESS_HASHER_H_
+#define BASE_MEMORY_ADDRESS_HASHER_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace base {
+
+struct AddressHasher {
+  size_t operator()(const void* address) const;
+};
+
+}  // namespace base
+
+#endif  // BASE_MEMORY_ADDRESS_HASHER_H_