CSSMediaRule and CSSSupportsRule inherit from CSSConditionRule

third_party/WebKit/Source/core/css/StyleRule.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2008, 2012, 2013 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 177 matching lines @@
   DECLARE_TRACE_AFTER_DISPATCH();
 
  protected:
   StyleRuleGroup(RuleType, HeapVector<Member<StyleRuleBase>>& adoptRule);
   StyleRuleGroup(const StyleRuleGroup&);
 
  private:
   HeapVector<Member<StyleRuleBase>> m_childRules;
 };
 
-class CORE_EXPORT StyleRuleMedia : public StyleRuleGroup {
+class CORE_EXPORT StyleRuleCondition : public StyleRuleGroup {
+ public:
+  String conditionText() const { return m_conditionText; }
+
+  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
+    StyleRuleGroup::traceAfterDispatch(visitor);
+  }
+
+ protected:
+  StyleRuleCondition(RuleType, HeapVector<Member<StyleRuleBase>>& adoptRule);
+  StyleRuleCondition(RuleType,
+                     const String& conditionText,
+                     HeapVector<Member<StyleRuleBase>>& adoptRule);
+  StyleRuleCondition(const StyleRuleCondition&);
+  String m_conditionText;
+};
+
+class CORE_EXPORT StyleRuleMedia : public StyleRuleCondition {
  public:
   static StyleRuleMedia* create(MediaQuerySet* media,
                                 HeapVector<Member<StyleRuleBase>>& adoptRules) {
     return new StyleRuleMedia(media, adoptRules);
   }
 
   MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
 
   StyleRuleMedia* copy() const { return new StyleRuleMedia(*this); }
 
   DECLARE_TRACE_AFTER_DISPATCH();
 
  private:
   StyleRuleMedia(MediaQuerySet*, HeapVector<Member<StyleRuleBase>>& adoptRules);
   StyleRuleMedia(const StyleRuleMedia&);
 
   Member<MediaQuerySet> m_mediaQueries;
 };
 
-class StyleRuleSupports : public StyleRuleGroup {
+class StyleRuleSupports : public StyleRuleCondition {
  public:
   static StyleRuleSupports* create(
       const String& conditionText,
       bool conditionIsSupported,
       HeapVector<Member<StyleRuleBase>>& adoptRules) {
     return new StyleRuleSupports(conditionText, conditionIsSupported,
                                  adoptRules);
   }
 
-  String conditionText() const { return m_conditionText; }
   bool conditionIsSupported() const { return m_conditionIsSupported; }
   StyleRuleSupports* copy() const { return new StyleRuleSupports(*this); }
 
   DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
-    StyleRuleGroup::traceAfterDispatch(visitor);
+    StyleRuleCondition::traceAfterDispatch(visitor);
   }
 
  private:
   StyleRuleSupports(const String& conditionText,
                     bool conditionIsSupported,
                     HeapVector<Member<StyleRuleBase>>& adoptRules);
   StyleRuleSupports(const StyleRuleSupports&);
 
   String m_conditionText;
   bool m_conditionIsSupported;
@@ skipping 45 matching lines @@
 DEFINE_STYLE_RULE_TYPE_CASTS(FontFace);
 DEFINE_STYLE_RULE_TYPE_CASTS(Page);
 DEFINE_STYLE_RULE_TYPE_CASTS(Media);
 DEFINE_STYLE_RULE_TYPE_CASTS(Supports);
 DEFINE_STYLE_RULE_TYPE_CASTS(Viewport);
 DEFINE_STYLE_RULE_TYPE_CASTS(Charset);
 
 }  // namespace blink
 
 #endif  // StyleRule_h