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

Source/core/svg/SVGPathStringBuilder.h

Index: Source/core/svg/SVGPathStringBuilder.h
diff --git a/Source/core/svg/SVGPathStringBuilder.h b/Source/core/svg/SVGPathStringBuilder.h
index 5836f25b35ffa24914ed8eaf9ca5b8aad8ba0ad6..aa032481d1baa64f227f519592fbe1e8e03e450f 100644
--- a/Source/core/svg/SVGPathStringBuilder.h
+++ b/Source/core/svg/SVGPathStringBuilder.h
@@ -30,10 +30,10 @@ public:
     String result();
 
 private:
-    virtual void incrementPathSegmentCount() override { }
-    virtual bool continueConsuming() override { return true; }
+    void incrementPathSegmentCount() override { }
+    bool continueConsuming() override { return true; }
 
-    virtual void emitSegment(const PathSegmentData&) override;
+    void emitSegment(const PathSegmentData&) override;
 
     StringBuilder m_stringBuilder;
 };