Move latin1_string_conversions to base

webkit/glue/latin1_string_conversions.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 WEBKIT_GLUE_LATIN1_STRING_CONVERSIONS_H_
-#define WEBKIT_GLUE_LATIN1_STRING_CONVERSIONS_H_
-
-#include <string>
-
-#include "base/base_export.h"
-#include "base/string16.h"
-#include "webkit/glue/webkit_glue_export.h"
-
-namespace webkit_glue {
-
-// This definition of Latin1Char matches the definition of LChar in Blink. We
-// use unsigned char rather than char to make less tempting to mix and match
-// Latin-1 and UTF-8 characters..
-typedef unsigned char Latin1Char;
-
-// This somewhat odd function is designed to help us convert from Blink Strings
-// to string16. A Blink string is either backed by an array of Latin-1
-// characters or an array of UTF-16 characters. This function is called by
-// WebString::operator string16() to convert one or the other character array
-// to string16. This function is defined here rather than in WebString.h to
-// avoid binary bloat in all the callers of the conversion operator.
-WEBKIT_GLUE_EXPORT string16 Latin1OrUTF16ToUTF16(size_t length,
-                                                 const Latin1Char* latin1,
-                                                 const char16* utf16);
-
-}  // namespace webkit_glue
-
-#endif  // WEBKIT_GLUE_LATIN1_STRING_CONVERSIONS_H_