base: Update comment about use of std::numeric_limits.

base/basictypes.h

 // Copyright 2013 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 definitions of our old basic integral types
 // ((u)int{8,16,32,64}) and further includes. I recommend that you use the C99
 // standard types instead, and include <stdint.h>/<stddef.h>/etc. as needed.
 // Note that the macros and macro-like constructs that were formerly defined in
 // this file are now available separately in base/macros.h.
 
@@ skipping 10 matching lines @@
 // DEPRECATED: Please use (u)int{8,16,32,64}_t instead (and include <stdint.h>).
 typedef int8_t int8;
 typedef uint8_t uint8;
 typedef int16_t int16;
 typedef uint16_t uint16;
 typedef int32_t int32;
 typedef uint32_t uint32;
 typedef int64_t int64;
 typedef uint64_t uint64;
 
-// DEPRECATED: Please use std::numeric_limits (from <limits>) instead.
+// DEPRECATED: Please use std::numeric_limits (from <limits>) or
+// (U)INT{8,16,32,64}_{MIN,MAX} in case of globals (and include <stdint.h>).
 const uint8  kuint8max  =  0xFF;
 const uint16 kuint16max =  0xFFFF;
 const uint32 kuint32max =  0xFFFFFFFF;
 const uint64 kuint64max =  0xFFFFFFFFFFFFFFFFULL;
 const  int8  kint8min   = -0x7F - 1;
 const  int8  kint8max   =  0x7F;
 const  int16 kint16min  = -0x7FFF - 1;
 const  int16 kint16max  =  0x7FFF;
 const  int32 kint32min  = -0x7FFFFFFF - 1;
 const  int32 kint32max  =  0x7FFFFFFF;
 const  int64 kint64min  = -0x7FFFFFFFFFFFFFFFLL - 1;
 const  int64 kint64max  =  0x7FFFFFFFFFFFFFFFLL;
 
 #endif  // BASE_BASICTYPES_H_