Have Element::ensureMutableInlineStyle() return a reference

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 248 matching lines @@
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
     , m_selectorList(o.m_selectorList)
 {
 }
 
 StyleRule::~StyleRule()
 {
 }
 
-MutableStylePropertySet* StyleRule::mutableProperties()
+MutableStylePropertySet& StyleRule::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return toMutableStylePropertySet(m_properties);
+    return *toMutableStylePropertySet(m_properties);
 }
 
 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()
 {
 }
 
-MutableStylePropertySet* StyleRulePage::mutableProperties()
+MutableStylePropertySet& StyleRulePage::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return toMutableStylePropertySet(m_properties);
+    return *toMutableStylePropertySet(m_properties);
 }
 
 void StyleRulePage::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 StyleRuleFontFace::StyleRuleFontFace()
     : StyleRuleBase(FontFace)
 {
 }
 
 StyleRuleFontFace::StyleRuleFontFace(const StyleRuleFontFace& o)
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleFontFace::~StyleRuleFontFace()
 {
 }
 
-MutableStylePropertySet* StyleRuleFontFace::mutableProperties()
+MutableStylePropertySet& StyleRuleFontFace::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return toMutableStylePropertySet(m_properties);
+    return *toMutableStylePropertySet(m_properties);
 }
 
 void StyleRuleFontFace::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 StyleRuleGroup::StyleRuleGroup(Type type, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase> >& adoptRule)
     : StyleRuleBase(type)
 {
@@ skipping 59 matching lines @@
 StyleRuleViewport::StyleRuleViewport(const StyleRuleViewport& o)
     : StyleRuleBase(o)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleViewport::~StyleRuleViewport()
 {
 }
 
-MutableStylePropertySet* StyleRuleViewport::mutableProperties()
+MutableStylePropertySet& StyleRuleViewport::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return toMutableStylePropertySet(m_properties);
+    return *toMutableStylePropertySet(m_properties);
 }
 
 void StyleRuleViewport::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 StyleRuleFilter::StyleRuleFilter(const String& filterName)
     : StyleRuleBase(Filter)
     , m_filterName(filterName)
 {
 }
 
 StyleRuleFilter::StyleRuleFilter(const StyleRuleFilter& o)
     : StyleRuleBase(o)
     , m_filterName(o.m_filterName)
     , m_properties(o.m_properties->mutableCopy())
 {
 }
 
 StyleRuleFilter::~StyleRuleFilter()
 {
 }
 
-MutableStylePropertySet* StyleRuleFilter::mutableProperties()
+MutableStylePropertySet& StyleRuleFilter::mutableProperties()
 {
     if (!m_properties->isMutable())
         m_properties = m_properties->mutableCopy();
-    return toMutableStylePropertySet(m_properties);
+    return *toMutableStylePropertySet(m_properties);
 }
 
 void StyleRuleFilter::setProperties(PassRefPtr<StylePropertySet> properties)
 {
     m_properties = properties;
 }
 
 } // namespace WebCore