Fix virtual/override/final usage in Source/core/layout/.

Source/core/layout/ClipPathOperation.h

Index: Source/core/layout/ClipPathOperation.h
diff --git a/Source/core/layout/ClipPathOperation.h b/Source/core/layout/ClipPathOperation.h
index 1e1d2e8754fa342438e149019b503af6e1727b31..75d23d31999b9c5c69ee6906a47904628766793b 100644
--- a/Source/core/layout/ClipPathOperation.h
+++ b/Source/core/layout/ClipPathOperation.h
@@ -74,7 +74,7 @@ public:
     const AtomicString& fragment() const { return m_fragment; }
 
 private:
-    virtual bool operator==(const ClipPathOperation& o) const override
+    bool operator==(const ClipPathOperation& o) const override
     {
         return isSameType(o) && m_url == static_cast<const ReferenceClipPathOperation&>(o).m_url;
     }
@@ -113,7 +113,7 @@ public:
     }
 
 private:
-    virtual bool operator==(const ClipPathOperation&) const override;
+    bool operator==(const ClipPathOperation&) const override;
 
     ShapeClipPathOperation(PassRefPtr<BasicShape> shape)
         : ClipPathOperation(SHAPE)