wstring: remove wstring version of RemoveChars

base/string_util.h

 // Copyright (c) 2011 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 defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 #pragma once
 
@@ skipping 162 matching lines @@
 
 BASE_API extern const wchar_t kWhitespaceWide[];
 BASE_API extern const char16 kWhitespaceUTF16[];
 BASE_API extern const char kWhitespaceASCII[];
 
 BASE_API extern const char kUtf8ByteOrderMark[];
 
 // Removes characters in remove_chars from anywhere in input.  Returns true if
 // any characters were removed.
 // NOTE: Safe to use the same variable for both input and output.
-BASE_API bool RemoveChars(const std::wstring& input,
-                          const wchar_t remove_chars[],
-                          std::wstring* output);
 BASE_API bool RemoveChars(const string16& input,
                           const char16 remove_chars[],
                           string16* output);
 BASE_API bool RemoveChars(const std::string& input,
                           const char remove_chars[],
                           std::string* output);
 
 // Removes characters in trim_chars from the beginning and end of input.
 // NOTE: Safe to use the same variable for both input and output.
 BASE_API bool TrimString(const std::wstring& input,
@@ skipping 362 matching lines @@
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32 Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 
 #endif  // BASE_STRING_UTIL_H_