Fix incorrect usage of StringImpl::sizeInBytes.

third_party/WebKit/Source/wtf/text/StringImpl.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller ( mueller@kde.org )
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 1974 matching lines @@
         return length2 > 0 ? -1 : 0;
 
     if (!string2)
         return length1 > 0 ? 1 : 0;
 
     if (string1->is8Bit())
         return codePointCompareIgnoringASCIICase(length1, length2, string1->characters8(), string2);
     return codePointCompareIgnoringASCIICase(length1, length2, string1->characters16(), string2);
 }
 
-size_t StringImpl::sizeInBytes() const
-{
-    size_t size = length();
-    if (!is8Bit())
-        size *= 2;
-    return size + sizeof(*this);
-}
-
 UChar32 toUpper(UChar32 c, const AtomicString& localeIdentifier)
 {
     if (!localeIdentifier.isNull()) {
         if (localeIdMatchesLang(localeIdentifier, "tr") || localeIdMatchesLang(localeIdentifier, "az")) {
             if (c == 'i')
                 return latinCapitalLetterIWithDotAbove;
             if (c == latinSmallLetterDotlessI)
                 return 'I';
         } else if (localeIdMatchesLang(localeIdentifier, "lt")) {
             // TODO(rob.buis) implement upper-casing rules for lt
             // like in StringImpl::upper(locale).
         }
     }
 
     return toUpper(c);
 }
 
 } // namespace WTF