Shrink QualifiedNameImpl by 8 bytes on 64-bit platforms

Source/core/dom/QualifiedName.h

 /*
  * Copyright (C) 2005, 2006, 2009 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 56 matching lines @@
             RefCounted<QualifiedNameImpl>::ref();
         }
 
         void deref()
         {
             if (m_isStatic)
                 return;
             RefCounted<QualifiedNameImpl>::deref();
         }
 
+        // We rely on StringHasher's hashMemory clearing out the top 8 bits when
+        // doing hashing and use one of the bits for the m_isStatic value.
+        mutable unsigned m_existingHash : 24;
+        unsigned m_isStatic : 1;
         const AtomicString m_prefix;
         const AtomicString m_localName;
         const AtomicString m_namespace;
         mutable AtomicString m_localNameUpper;
-        // We rely on StringHasher's hashMemory clearing out the top 8 bits when
-        // doing hashing and use one of the bits for the m_isStatic value.
-        mutable unsigned m_existingHash : 24;
-        unsigned m_isStatic : 1;
 
     private:
         QualifiedNameImpl(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI, bool isStatic)
-            : m_prefix(prefix)
+            : m_existingHash(0)
+            , m_isStatic(isStatic)
+            , m_prefix(prefix)
             , m_localName(localName)
             , m_namespace(namespaceURI)
-            , m_existingHash(0)
-            , m_isStatic(isStatic)
 
         {
             ASSERT(!namespaceURI.isEmpty() || namespaceURI.isNull());
         }
     };
 
     QualifiedName(const AtomicString& prefix, const AtomicString& localName, const AtomicString& namespaceURI);
     ~QualifiedName();
 
     QualifiedName(const QualifiedName& other) : m_impl(other.m_impl) { }
@@ skipping 79 matching lines @@
         typedef blink::QualifiedNameHash Hash;
     };
 
     template<> struct HashTraits<blink::QualifiedName> : SimpleClassHashTraits<blink::QualifiedName> {
         static const bool emptyValueIsZero = false;
         static blink::QualifiedName emptyValue() { return blink::QualifiedName::null(); }
     };
 }
 
 #endif