[oilpan]: Avoid refcounting QualifiedName's nullQName when tracing.

Source/build/scripts/templates/MakeQualifiedNames.cpp.tmpl

 {% from "macros.tmpl" import license %}
 {{ license() }}
 
 #include "config.h"
 
 #ifdef SKIP_STATIC_CONSTRUCTORS_ON_GCC
 #define {{namespace|to_macro_style}}_NAMES_HIDE_GLOBALS 1
 #else
 #define QNAME_DEFAULT_CONSTRUCTOR 1
 #endif
@@ skipping 46 matching lines @@
     AtomicString {{namespace_prefix}}NS("{{namespace_uri}}", AtomicString::ConstructFromLiteral);
 
     // Namespace
     new ((void*)&{{namespace_prefix}}NamespaceURI) AtomicString({{namespace_prefix}}NS);
     {% for name, tag_list in (tags + attrs)|groupby('name')|sort %}
     StringImpl* {{tag_list[0]|symbol}}Impl = StringImpl::createStatic("{{name}}", {{name|length}}, {{name|hash}});
     {% endfor %}
 
     // Tags
     {% for tag in tags|sort %}
-    createQualifiedName((void*)&{{tag|symbol}}Tag, {{tag|symbol}}Impl, {{namespace_prefix}}NS);
+    QualifiedName::createStatic((void*)&{{tag|symbol}}Tag, {{tag|symbol}}Impl, {{namespace_prefix}}NS);
     {% endfor %}
 
     // Attrs
     {% for attr in attrs|sort %}
     {% if use_namespace_for_attrs %}
-    createQualifiedName((void*)&{{attr|symbol}}Attr, {{attr|symbol}}Impl, {{namespace_prefix}}NS);
+    QualifiedName::createStatic((void*)&{{attr|symbol}}Attr, {{attr|symbol}}Impl, {{namespace_prefix}}NS);
     {% else %}
-    createQualifiedName((void*)&{{attr|symbol}}Attr, {{attr|symbol}}Impl);
+    QualifiedName::createStatic((void*)&{{attr|symbol}}Attr, {{attr|symbol}}Impl);
     {% endif %}
     {% endfor %}
 }
 
 } // {{namespace}}
 } // WebCore