Remove a lot of API surface from Element.

sky/engine/core/dom/shadow/SelectRuleFeatureSet.h

Index: sky/engine/core/dom/shadow/SelectRuleFeatureSet.h
diff --git a/sky/engine/core/dom/shadow/SelectRuleFeatureSet.h b/sky/engine/core/dom/shadow/SelectRuleFeatureSet.h
index 310624083057fedec095e5e4855274b48f453c6c..d1d80f4aef63857aa34025adceb7cf15d0788ab0 100644
--- a/sky/engine/core/dom/shadow/SelectRuleFeatureSet.h
+++ b/sky/engine/core/dom/shadow/SelectRuleFeatureSet.h
@@ -51,25 +51,13 @@ public:
     bool hasSelectorForClass(const AtomicString&) const;
     bool hasSelectorForAttribute(const AtomicString&) const;
 
-    bool hasSelectorForChecked() const { return hasSelectorFor(AffectedSelectorChecked); }
-    bool hasSelectorForEnabled() const { return hasSelectorFor(AffectedSelectorEnabled); }
-    bool hasSelectorForDisabled() const { return hasSelectorFor(AffectedSelectorDisabled); }
-    bool hasSelectorForIndeterminate() const { return hasSelectorFor(AffectedSelectorIndeterminate); }
-    bool hasSelectorForLink() const { return hasSelectorFor(AffectedSelectorLink); }
-    bool hasSelectorForVisited() const { return hasSelectorFor(AffectedSelectorVisited); }
-
-    bool hasSelectorFor(AffectedSelectorMask features) const { return m_featureFlags & features; }
-
     bool checkSelectorsForClassChange(const SpaceSplitString& changedClasses) const;
     bool checkSelectorsForClassChange(const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses) const;
 
     void trace(Visitor* visitor) { visitor->trace(m_cssRuleFeatureSet); }
 
 private:
-    void setSelectRuleFeature(AffectedSelectorType feature) { m_featureFlags |= feature; }
-
     RuleFeatureSet m_cssRuleFeatureSet;
-    int m_featureFlags;
 };
 
 inline bool SelectRuleFeatureSet::hasSelectorForId(const AtomicString& idValue) const