Fix incorrect usage of StringImpl::sizeInBytes.

third_party/WebKit/Source/wtf/text/WTFString.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 120 matching lines @@
         ASSERT(!m_impl->is8Bit());
         return m_impl->characters16();
     }
 
     // Return characters8() or characters16() depending on CharacterType.
     template <typename CharacterType>
     inline const CharacterType* getCharacters() const;
 
     bool is8Bit() const { return m_impl->is8Bit(); }
 
-    unsigned sizeInBytes() const
-    {
-        if (!m_impl)
-            return 0;
-        return m_impl->length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar));
-    }
-
     CString ascii() const;
     CString latin1() const;
     CString utf8(UTF8ConversionMode = LenientUTF8Conversion) const;
 
     UChar operator[](unsigned index) const
     {
         if (!m_impl || index >= m_impl->length())
             return 0;
         return (*m_impl)[index];
     }
@@ skipping 211 matching lines @@
 
     // Tries to convert the passed in string to UTF-8, but will fall back to
     // Latin-1 if the string is not valid UTF-8.
     static String fromUTF8WithLatin1Fallback(const LChar*, size_t);
     static String fromUTF8WithLatin1Fallback(const char* s, size_t length) { return fromUTF8WithLatin1Fallback(reinterpret_cast<const LChar*>(s), length); }
 
     bool containsOnlyASCII() const;
     bool containsOnlyLatin1() const;
     bool containsOnlyWhitespace() const { return !m_impl || m_impl->containsOnlyWhitespace(); }
 
+    size_t charactersSizeInBytes() const { return m_impl ? m_impl->charactersSizeInBytes() : 0; }
+
     // Hash table deleted values, which are only constructed and never copied or
     // destroyed.
     String(WTF::HashTableDeletedValueType) : m_impl(WTF::HashTableDeletedValue) { }
     bool isHashTableDeletedValue() const { return m_impl.isHashTableDeletedValue(); }
 
 #ifndef NDEBUG
     void show() const;
 #endif
 
 private:
@@ skipping 208 matching lines @@
 using WTF::emptyString16Bit;
 using WTF::append;
 using WTF::charactersAreAllASCII;
 using WTF::equal;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 
 #include "wtf/text/AtomicString.h"
 #endif // WTFString_h