Move (copy/remove)BlockProperties out of MutableStylePropertySet

Source/core/css/StylePropertySet.h

Index: Source/core/css/StylePropertySet.h
diff --git a/Source/core/css/StylePropertySet.h b/Source/core/css/StylePropertySet.h
index 52c7b53f2668746e47d542051ea629c806729414..34f1d947ed090bb6ac31f38eff0ef3f2e1a4c010 100644
--- a/Source/core/css/StylePropertySet.h
+++ b/Source/core/css/StylePropertySet.h
@@ -99,8 +99,6 @@ public:
     CSSPropertyID getPropertyShorthand(CSSPropertyID) const;
     bool isPropertyImplicit(CSSPropertyID) const;
 
-    PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyBlockProperties() const;
-
     CSSParserMode cssParserMode() const { return static_cast<CSSParserMode>(m_cssParserMode); }
 
     PassRefPtrWillBeRawPtr<MutableStylePropertySet> mutableCopy() const;
@@ -205,7 +203,6 @@ public:
     bool setProperty(const CSSProperty&, CSSProperty* slot = 0);
 
     bool removeProperty(CSSPropertyID, String* returnText = 0);
-    void removeBlockProperties();
     bool removePropertiesInSet(const CSSPropertyID* set, unsigned length);
     void removeEquivalentProperties(const StylePropertySet*);
     void removeEquivalentProperties(const CSSStyleDeclaration*);