Oilpan: Move core/xml/ to oilpan's heap

Source/core/xml/DocumentXPathEvaluator.h

Index: Source/core/xml/DocumentXPathEvaluator.h
diff --git a/Source/core/xml/DocumentXPathEvaluator.h b/Source/core/xml/DocumentXPathEvaluator.h
index 04a39f93dbb0f1bb8cf066212969d3e74bb75b1c..afece8d257941b2f8b17c9624cdd2251a2aa0ed8 100644
--- a/Source/core/xml/DocumentXPathEvaluator.h
+++ b/Source/core/xml/DocumentXPathEvaluator.h
@@ -42,11 +42,11 @@ public:
 
     static DocumentXPathEvaluator* from(DocumentSupplementable*);
 
-    static PassRefPtr<XPathExpression> createExpression(DocumentSupplementable*,
-        const String& expression, PassRefPtr<XPathNSResolver>, ExceptionState&);
-    static PassRefPtr<XPathNSResolver> createNSResolver(DocumentSupplementable*, Node* nodeResolver);
-    static PassRefPtr<XPathResult> evaluate(DocumentSupplementable*,
-        const String& expression, Node* contextNode, PassRefPtr<XPathNSResolver>,
+    static PassRefPtrWillBeRawPtr<XPathExpression> createExpression(DocumentSupplementable*,
+        const String& expression, PassRefPtrWillBeRawPtr<XPathNSResolver>, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<XPathNSResolver> createNSResolver(DocumentSupplementable*, Node* nodeResolver);
+    static PassRefPtrWillBeRawPtr<XPathResult> evaluate(DocumentSupplementable*,
+        const String& expression, Node* contextNode, PassRefPtrWillBeRawPtr<XPathNSResolver>,
         unsigned short type, XPathResult*, ExceptionState&);
 
 private:
@@ -54,7 +54,7 @@ private:
 
     static const char* supplementName() { return "DocumentXPathEvaluator"; }
 
-    RefPtr<XPathEvaluator> m_xpathEvaluator;
+    RefPtrWillBePersistent<XPathEvaluator> m_xpathEvaluator;
 };
 
 } // namespace WebCore