Update from https://crrev.com/305340

base/macros.h

 // 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.
 
 // This file contains macros and macro-like constructs (e.g., templates) that
 // are commonly used throughout Chromium source. (It may also contain things
 // that are closely related to things that are commonly used that belong in this
 // file.)
 
 #ifndef BASE_MACROS_H_
 #define BASE_MACROS_H_
 
 #include <stddef.h>  // For size_t.
 #include <string.h>  // For memcpy.
 
-#include "base/compiler_specific.h"  // For ALLOW_UNUSED.
-
 // Put this in the private: declarations for a class to be uncopyable.
 #define DISALLOW_COPY(TypeName) \
   TypeName(const TypeName&)
 
 // Put this in the private: declarations for a class to be unassignable.
 #define DISALLOW_ASSIGN(TypeName) \
   void operator=(const TypeName&)
 
 // A macro to disallow the copy constructor and operator= functions
 // This should be used in the private: declarations for a class
@@ skipping 173 matching lines @@
 
 // Use these to declare and define a static local variable (static T;) so that
 // it is leaked so that its destructors are not called at exit. If you need
 // thread-safe initialization, use base/lazy_instance.h instead.
 #define CR_DEFINE_STATIC_LOCAL(type, name, arguments) \
   static type& name = *new type arguments
 
 }  // base
 
 #endif  // BASE_MACROS_H_