Move CSSOM classes to using MutableStylePropertySet over StylePropertySet.

Source/core/css/StyleRule.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2005, 2006, 2008, 2012 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.
  *
@@ skipping 252 matching lines @@
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
     , m_selectorList(o.m_selectorList)
 {
 }
 
 StyleRule::~StyleRule()
 {
 }
 
-StylePropertySet* StyleRule::mutableProperties()
+MutableStylePropertySet* StyleRule::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return m_properties.get();
+    return static_cast<MutableStylePropertySet*>(m_properties.get());
 }
 
 void StyleRule::setProperties(PassRefPtr<StylePropertySet> properties)
 { 
     m_properties = properties;
 }
 
 StyleRulePage::StyleRulePage()
     : StyleRuleBase(Page)
 {
 }
 
 StyleRulePage::StyleRulePage(const StyleRulePage& o)
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
     , m_selectorList(o.m_selectorList)
 {
 }
 
 StyleRulePage::~StyleRulePage()
 {
 }
 
-StylePropertySet* StyleRulePage::mutableProperties()
+MutableStylePropertySet* StyleRulePage::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return m_properties.get();
+    return static_cast<MutableStylePropertySet*>(m_properties.get());
 }
 
 void StyleRulePage::setProperties(PassRefPtr<StylePropertySet> properties)
 { 
     m_properties = properties;
 }
 
 void StyleRulePage::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
     info.addMember(m_properties, "properties");
     info.addMember(m_selectorList, "selectorList");
 }
 
 StyleRuleFontFace::StyleRuleFontFace()
     : StyleRuleBase(FontFace, 0)
 {
 }
 
 StyleRuleFontFace::StyleRuleFontFace(const StyleRuleFontFace& o)
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleFontFace::~StyleRuleFontFace()
 {
 }
 
-StylePropertySet* StyleRuleFontFace::mutableProperties()
+MutableStylePropertySet* StyleRuleFontFace::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return m_properties.get();
+    return static_cast<MutableStylePropertySet*>(m_properties.get());
 }
 
 void StyleRuleFontFace::setProperties(PassRefPtr<StylePropertySet> properties)
 { 
     m_properties = properties;
 }
 
 void StyleRuleFontFace::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
@@ skipping 94 matching lines @@
 StyleRuleViewport::StyleRuleViewport(const StyleRuleViewport& o)
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleViewport::~StyleRuleViewport()
 {
 }
 
-StylePropertySet* StyleRuleViewport::mutableProperties()
+MutableStylePropertySet* StyleRuleViewport::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return m_properties.get();
+    return static_cast<MutableStylePropertySet*>(m_properties.get());
 }
 
 void StyleRuleViewport::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 void StyleRuleViewport::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
@@ skipping 11 matching lines @@
     : StyleRuleBase(o)
     , m_filterName(o.m_filterName)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleFilter::~StyleRuleFilter()
 {
 }
 
-StylePropertySet* StyleRuleFilter::mutableProperties()
+MutableStylePropertySet* StyleRuleFilter::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return m_properties.get();
+    return static_cast<MutableStylePropertySet*>(m_properties.get());
 }
 
 void StyleRuleFilter::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 void StyleRuleFilter::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
     info.addMember(m_filterName);
     info.addMember(m_properties);
 }
 
 } // namespace WebCore