Remove unnecessary mutable keyword for m_nodeFlags

Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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 715 matching lines @@
 
         // HTML dir=auto.
         SelfOrAncestorHasDirAutoFlag = 1 << 29,
 
         DefaultNodeFlags = IsFinishedParsingChildrenFlag | ChildNeedsStyleRecalcFlag | NeedsReattachStyleChange
     };
 
     // 2 bits remaining.
 
     bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
-    void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); }
-    void setFlag(NodeFlags mask) const { m_nodeFlags |= mask; }
-    void clearFlag(NodeFlags mask) const { m_nodeFlags &= ~mask; }
+    void setFlag(bool f, NodeFlags mask) { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); }
+    void setFlag(NodeFlags mask) { m_nodeFlags |= mask; }
+    void clearFlag(NodeFlags mask) { m_nodeFlags &= ~mask; }
 
 protected:
     enum ConstructionType {
         CreateOther = DefaultNodeFlags,
         CreateText = DefaultNodeFlags | IsTextFlag,
         CreateContainer = DefaultNodeFlags | IsContainerFlag,
         CreateElement = CreateContainer | IsElementFlag,
         CreateShadowRoot = CreateContainer | IsDocumentFragmentFlag | IsInShadowTreeFlag,
         CreateDocumentFragment = CreateContainer | IsDocumentFragmentFlag,
         CreateHTMLElement = CreateElement | IsHTMLFlag,
@@ skipping 68 matching lines @@
 
     virtual RenderStyle* nonRendererStyle() const { return 0; }
 
     virtual RenderStyle* virtualComputedStyle(PseudoId = NOPSEUDO);
 
     void trackForDebugging();
 
     WillBeHeapVector<OwnPtrWillBeMember<MutationObserverRegistration> >* mutationObserverRegistry();
     WillBeHeapHashSet<RawPtrWillBeMember<MutationObserverRegistration> >* transientMutationObserverRegistry();
 
-    mutable uint32_t m_nodeFlags;
+    uint32_t m_nodeFlags;
     RawPtrWillBeMember<ContainerNode> m_parentOrShadowHostNode;
     RawPtrWillBeMember<TreeScope> m_treeScope;
     RawPtrWillBeMember<Node> m_previous;
     RawPtrWillBeMember<Node> m_next;
     // When a node has rare data we move the renderer into the rare data.
     union DataUnion {
         DataUnion() : m_renderer(0) { }
         RenderObject* m_renderer;
         NodeRareDataBase* m_rareData;
     } m_data;
@@ skipping 69 matching lines @@
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const WebCore::Node*);
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif