Delete char32 from base/basictypes.h.

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.
 
 #ifndef BASE_BASICTYPES_H_
 #define BASE_BASICTYPES_H_
 
 #include <limits.h>  // So we can set the bounds of our types.
 #include <stddef.h>  // For size_t.
 #include <stdint.h>  // For intptr_t.
@@ skipping 25 matching lines @@
 // On Mac OS X, |long long| is used for 64-bit types for compatibility with
 // <inttypes.h> format macros even in the LP64 model.
 #if defined(__LP64__) && !defined(OS_MACOSX) && !defined(OS_OPENBSD)
 typedef long int64;
 typedef unsigned long uint64;
 #else
 typedef long long int64;
 typedef unsigned long long uint64;
 #endif
 
-// A type to represent a Unicode code-point value. As of Unicode 4.0,
-// such values require up to 21 bits.
-// (For type-checking on pointers, make this explicitly signed,
-// and it should always be the signed version of whatever int32 is.)
-// TODO(vtl): This is almost completely unused in Chromium. Delete it?
-typedef signed int char32;
-
 const uint8  kuint8max  = (( uint8) 0xFF);
 const uint16 kuint16max = ((uint16) 0xFFFF);
 const uint32 kuint32max = ((uint32) 0xFFFFFFFF);
 const uint64 kuint64max = ((uint64) GG_LONGLONG(0xFFFFFFFFFFFFFFFF));
 const  int8  kint8min   = ((  int8) 0x80);
 const  int8  kint8max   = ((  int8) 0x7F);
 const  int16 kint16min  = (( int16) 0x8000);
 const  int16 kint16max  = (( int16) 0x7FFF);
 const  int32 kint32min  = (( int32) 0x80000000);
 const  int32 kint32max  = (( int32) 0x7FFFFFFF);
@@ skipping 289 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_BASICTYPES_H_