wstring: remove wstring version of RemoveChars

base/string_util.cc

 // 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.
 
 #include "base/string_util.h"
 
 #include "build/build_config.h"
 
 #include <ctype.h>
 #include <errno.h>
@@ skipping 166 matching lines @@
   found = output->find_first_of(remove_chars);
   while (found != STR::npos) {
     removed = true;
     output->replace(found, 1, STR());
     found = output->find_first_of(remove_chars, found);
   }
 
   return removed;
 }
 
-bool RemoveChars(const std::wstring& input,
-                 const wchar_t remove_chars[],
-                 std::wstring* output) {
-  return RemoveCharsT(input, remove_chars, output);
-}
-
-#if !defined(WCHAR_T_IS_UTF16)
 bool RemoveChars(const string16& input,
                  const char16 remove_chars[],
                  string16* output) {
   return RemoveCharsT(input, remove_chars, output);
 }
-#endif
 
 bool RemoveChars(const std::string& input,
                  const char remove_chars[],
                  std::string* output) {
   return RemoveCharsT(input, remove_chars, output);
 }
 
 template<typename STR>
 TrimPositions TrimStringT(const STR& input,
                           const typename STR::value_type trim_chars[],
@@ skipping 870 matching lines @@
 }
 
 }  // namespace
 
 size_t base::strlcpy(char* dst, const char* src, size_t dst_size) {
   return lcpyT<char>(dst, src, dst_size);
 }
 size_t base::wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size) {
   return lcpyT<wchar_t>(dst, src, dst_size);
 }