Make sure ImmutableStylePropertySet uses the new 16 bits size of StylePropertyMetadata.

Source/core/css/StylePropertySet.h

Index: Source/core/css/StylePropertySet.h
diff --git a/Source/core/css/StylePropertySet.h b/Source/core/css/StylePropertySet.h
index 7d40b4973e3e5c8d7adec51c4a4850937f80909b..753fdc6deec0d8a7143069c2203e0f31f97e413f 100644
--- a/Source/core/css/StylePropertySet.h
+++ b/Source/core/css/StylePropertySet.h
@@ -1,6 +1,7 @@
 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2013 Intel Corporation. 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
@@ -164,12 +165,12 @@ private:
 
 inline const CSSValue** ImmutableStylePropertySet::valueArray() const
 {
-    return reinterpret_cast<const CSSValue**>(const_cast<const void**>((&static_cast<const ImmutableStylePropertySet*>(this)->m_storage)));
+    return reinterpret_cast<const CSSValue**>(const_cast<const void**>(&(this->m_storage)));
 }
 
 inline const StylePropertyMetadata* ImmutableStylePropertySet::metadataArray() const
 {
-    return reinterpret_cast<const StylePropertyMetadata*>(&reinterpret_cast<const char*>((&static_cast<const ImmutableStylePropertySet*>(this)->m_storage))[m_arraySize * sizeof(CSSValue*)]);
+    return reinterpret_cast<const StylePropertyMetadata*>(&reinterpret_cast<const char*>(&(this->m_storage))[m_arraySize * sizeof(CSSValue*)]);
 }
 
 class MutableStylePropertySet : public StylePropertySet {