Fix style erros in XPath-related files.

Source/core/xml/XPathVariableReference.h

Index: Source/core/xml/XPathVariableReference.h
diff --git a/Source/core/xml/XPathVariableReference.h b/Source/core/xml/XPathVariableReference.h
index a53599ed70cc32771dffdc268e203363f54aa390..d0345744a6106199049c33797db97ec86faeaaba 100644
--- a/Source/core/xml/XPathVariableReference.h
+++ b/Source/core/xml/XPathVariableReference.h
@@ -30,19 +30,21 @@
 
 namespace WebCore {
 
-    namespace XPath {
-
-        // Variable references are not used with XPathEvaluator.
-        class VariableReference FINAL : public Expression {
-        public:
-            explicit VariableReference(const String& name);
-        private:
-            virtual Value evaluate() const OVERRIDE;
-            virtual Value::Type resultType() const OVERRIDE { ASSERT_NOT_REACHED(); return Value::NumberValue; }
-            String m_name;
-        };
-
-    }
+namespace XPath {
+
+// Variable references are not used with XPathEvaluator.
+class VariableReference FINAL : public Expression {
+public:
+    explicit VariableReference(const String& name);
+
+private:
+    virtual Value evaluate() const OVERRIDE;
+    virtual Value::Type resultType() const OVERRIDE { ASSERT_NOT_REACHED(); return Value::NumberValue; }
+
+    String m_name;
+};
+
 }
 
-#endif // XPath_VariableReference_H
+}
+#endif // XPathVariableReference_h