Cleanup: Get rid of base::ASCIIToWide().

base/strings/utf_string_conversions.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.
 
 #ifndef BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
 #define BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
 
 #include <string>
 
 #include "base/base_export.h"
@@ skipping 21 matching lines @@
 BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len,
                              std::wstring* output);
 BASE_EXPORT std::wstring UTF16ToWide(const string16& utf16);
 
 BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output);
 BASE_EXPORT string16 UTF8ToUTF16(const StringPiece& utf8);
 BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len,
                              std::string* output);
 BASE_EXPORT std::string UTF16ToUTF8(const string16& utf16);
 
-// These convert an ASCII string, typically a hardcoded constant, to a
-// UTF16/Wide string.
-BASE_EXPORT std::wstring ASCIIToWide(const StringPiece& ascii);
+// This converts an ASCII string, typically a hardcoded constant, to a UTF16
+// string.
 BASE_EXPORT string16 ASCIIToUTF16(const StringPiece& ascii);
 
 // Converts to 7-bit ASCII by truncating. The result must be known to be ASCII
 // beforehand.
 BASE_EXPORT std::string UTF16ToASCII(const string16& utf16);
 
 }  // namespace base
 
 #endif  // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_