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

Source/core/xml/XPathPredicate.h

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 22 matching lines @@
 namespace blink {
 
 namespace XPath {
 
 class Number final : public Expression {
 public:
     explicit Number(double);
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    virtual Value evaluate(EvaluationContext&) const override;
-    virtual Value::Type resultType() const override { return Value::NumberValue; }
+    Value evaluate(EvaluationContext&) const override;
+    Value::Type resultType() const override { return Value::NumberValue; }
 
     Value m_value;
 };
 
 class StringExpression final : public Expression {
 public:
     explicit StringExpression(const String&);
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    virtual Value evaluate(EvaluationContext&) const override;
-    virtual Value::Type resultType() const override { return Value::StringValue; }
+    Value evaluate(EvaluationContext&) const override;
+    Value::Type resultType() const override { return Value::StringValue; }
 
     Value m_value;
 };
 
 class Negative final : public Expression {
 private:
-    virtual Value evaluate(EvaluationContext&) const override;
-    virtual Value::Type resultType() const override { return Value::NumberValue; }
+    Value evaluate(EvaluationContext&) const override;
+    Value::Type resultType() const override { return Value::NumberValue; }
 };
 
 class NumericOp final : public Expression {
 public:
     enum Opcode {
         OP_Add, OP_Sub, OP_Mul, OP_Div, OP_Mod
     };
     NumericOp(Opcode, Expression* lhs, Expression* rhs);
 
 private:
-    virtual Value evaluate(EvaluationContext&) const override;
-    virtual Value::Type resultType() const override { return Value::NumberValue; }
+    Value evaluate(EvaluationContext&) const override;
+    Value::Type resultType() const override { return Value::NumberValue; }
 
     Opcode m_opcode;
 };
 
 class EqTestOp final : public Expression {
 public:
     enum Opcode { OpcodeEqual, OpcodeNotEqual, OpcodeGreaterThan, OpcodeLessThan, OpcodeGreaterOrEqual, OpcodeLessOrEqual };
     EqTestOp(Opcode, Expression* lhs, Expression* rhs);
-    virtual Value evaluate(EvaluationContext&) const override;
+    Value evaluate(EvaluationContext&) const override;
 
 private:
-    virtual Value::Type resultType() const override { return Value::BooleanValue; }
+    Value::Type resultType() const override { return Value::BooleanValue; }
     bool compare(EvaluationContext&, const Value&, const Value&) const;
 
     Opcode m_opcode;
 };
 
 class LogicalOp final : public Expression {
 public:
     enum Opcode { OP_And, OP_Or };
     LogicalOp(Opcode, Expression* lhs, Expression* rhs);
 
 private:
-    virtual Value::Type resultType() const override { return Value::BooleanValue; }
+    Value::Type resultType() const override { return Value::BooleanValue; }
     bool shortCircuitOn() const;
-    virtual Value evaluate(EvaluationContext&) const override;
+    Value evaluate(EvaluationContext&) const override;
 
     Opcode m_opcode;
 };
 
 class Union final : public Expression {
 private:
-    virtual Value evaluate(EvaluationContext&) const override;
-    virtual Value::Type resultType() const override { return Value::NodeSetValue; }
+    Value evaluate(EvaluationContext&) const override;
+    Value::Type resultType() const override { return Value::NodeSetValue; }
 };
 
 class Predicate final : public GarbageCollected<Predicate> {
     WTF_MAKE_NONCOPYABLE(Predicate);
 public:
     explicit Predicate(Expression*);
     DECLARE_TRACE();
 
     bool evaluate(EvaluationContext&) const;
     bool isContextPositionSensitive() const { return m_expr->isContextPositionSensitive() || m_expr->resultType() == Value::NumberValue; }
     bool isContextSizeSensitive() const { return m_expr->isContextSizeSensitive(); }
 
 private:
     Member<Expression> m_expr;
 };
 
 } // namespace XPath
 
 } // namespace blink
 
 #endif // XPathPredicate_h