Fix style erros in XPath-related files.

Source/core/xml/XPathGrammar.y

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
@@ skipping 38 matching lines @@
 using namespace WebCore;
 using namespace XPath;
 
 %}
 
 %pure-parser
 %parse-param { WebCore::XPath::Parser* parser }
 
 %union
 {
-    Step::Axis axis;
-    Step::NodeTest* nodeTest;
-    NumericOp::Opcode numop;
-    EqTestOp::Opcode eqop;
+    WebCore::XPath::Step::Axis axis;
+    WebCore::XPath::Step::NodeTest* nodeTest;
+    WebCore::XPath::NumericOp::Opcode numop;
+    WebCore::XPath::EqTestOp::Opcode eqop;
     String* str;
-    Expression* expr;
-    WillBeHeapVector<OwnPtrWillBeMember<Predicate> >* predList;
-    WillBeHeapVector<OwnPtrWillBeMember<Expression> >* argList;
-    Step* step;
-    LocationPath* locationPath;
+    WebCore::XPath::Expression* expr;
+    WillBeHeapVector<OwnPtrWillBeMember<WebCore::XPath::Predicate> >* predList;
+    WillBeHeapVector<OwnPtrWillBeMember<WebCore::XPath::Expression> >* argList;
+    WebCore::XPath::Step* step;
+    WebCore::XPath::LocationPath* locationPath;
 }
 
 %{
 
 static int xpathyylex(YYSTYPE* yylval) { return Parser::current()->lex(yylval); }
 static void xpathyyerror(void*, const char*) { }
     
 %}
 
 %left <numop> MULOP
@@ skipping 466 matching lines @@
     MINUS UnaryExpr
     {
         $$ = new Negative;
         $$->addSubExpression(adoptPtrWillBeNoop($2));
         parser->unregisterParseNode($2);
         parser->registerParseNode($$);
     }
     ;
 
 %%