Use deferred style recalc for xml/xsl.

Source/core/xml/parser/XMLDocumentParser.cpp

Index: Source/core/xml/parser/XMLDocumentParser.cpp
diff --git a/Source/core/xml/parser/XMLDocumentParser.cpp b/Source/core/xml/parser/XMLDocumentParser.cpp
index 008125d6652d19944091601e8eff1c09cd061add..0679e2bee99a2dc6c326b3d00140ead3c964494b 100644
--- a/Source/core/xml/parser/XMLDocumentParser.cpp
+++ b/Source/core/xml/parser/XMLDocumentParser.cpp
@@ -419,7 +419,7 @@ void XMLDocumentParser::end()
         insertErrorMessageBlock();
     else {
         exitText();
-        document()->styleResolverChanged(RecalcStyleImmediately);
+        document()->styleResolverChanged(RecalcStyleDeferred);
     }
 
     if (isParsing())
@@ -1443,7 +1443,7 @@ void XMLDocumentParser::doEnd()
         document()->setTransformSource(adoptPtr(new TransformSource(doc)));
 
         document()->setParsing(false); // Make the document think it's done, so it will apply XSL stylesheets.
-        document()->styleResolverChanged(RecalcStyleImmediately);
+        document()->styleResolverChanged(RecalcStyleDeferred);
 
         // styleResolverChanged() call can detach the parser and null out its document.
         // In that case, we just bail out.