Fix incorrect usage of StringImpl::sizeInBytes.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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.
  *
@@ skipping 211 matching lines @@
     unsigned length() const { return m_length; }
     bool is8Bit() const { return m_is8Bit; }
 
     ALWAYS_INLINE const LChar* characters8() const { ASSERT(is8Bit()); return reinterpret_cast<const LChar*>(this + 1); }
     ALWAYS_INLINE const UChar* characters16() const { ASSERT(!is8Bit()); return reinterpret_cast<const UChar*>(this + 1); }
     ALWAYS_INLINE const void* bytes() const { return reinterpret_cast<const void*>(this + 1); }
 
     template <typename CharType>
     ALWAYS_INLINE const CharType * getCharacters() const;
 
-    size_t sizeInBytes() const;
+    size_t charactersSizeInBytes() const
+    {
+        return length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar));
+    }
 
     bool isAtomic() const { return m_isAtomic; }
     void setIsAtomic(bool isAtomic) { m_isAtomic = isAtomic; }
 
     bool isStatic() const { return m_isStatic; }
 
 private:
     // The high bits of 'hash' are always empty, but we prefer to store our
     // flags in the low bits because it makes them slightly more efficient to
     // access.  So, we shift left and right when setting and getting our hash
@@ skipping 469 matching lines @@
 using WTF::TextCaseASCIIInsensitive;
 using WTF::TextCaseInsensitive;
 using WTF::TextCaseSensitive;
 using WTF::TextCaseSensitivity;
 using WTF::equal;
 using WTF::equalNonNull;
 using WTF::lengthOfNullTerminatedString;
 using WTF::reverseFind;
 
 #endif