Oilpan: Replace RefPtrs to Node and its subclasses in core/xml/ with Oilpan transition types.

Source/core/xml/XSLTProcessor.cpp

Index: Source/core/xml/XSLTProcessor.cpp
diff --git a/Source/core/xml/XSLTProcessor.cpp b/Source/core/xml/XSLTProcessor.cpp
index a65ba8bddcefa29492ddfc3bb9f77fd61488f435..aadcf196b03c4f1bd81fd373880d016a91a0e1d3 100644
--- a/Source/core/xml/XSLTProcessor.cpp
+++ b/Source/core/xml/XSLTProcessor.cpp
@@ -60,14 +60,14 @@ XSLTProcessor::~XSLTProcessor()
 #endif
 }
 
-PassRefPtr<Document> XSLTProcessor::createDocumentFromSource(const String& sourceString,
+PassRefPtrWillBeRawPtr<Document> XSLTProcessor::createDocumentFromSource(const String& sourceString,
     const String& sourceEncoding, const String& sourceMIMEType, Node* sourceNode, LocalFrame* frame)
 {
-    RefPtr<Document> ownerDocument(sourceNode->document());
+    RefPtrWillBeRawPtr<Document> ownerDocument(sourceNode->document());
     bool sourceIsDocument = (sourceNode == ownerDocument.get());
     String documentSource = sourceString;
 
-    RefPtr<Document> result;
+    RefPtrWillBeRawPtr<Document> result = nullptr;
     DocumentInit init(sourceIsDocument ? ownerDocument->url() : KURL(), frame);
 
     bool forceXHTML = sourceMIMEType == "text/plain";
@@ -75,7 +75,7 @@ PassRefPtr<Document> XSLTProcessor::createDocumentFromSource(const String& sourc
         transformTextStringToXHTMLDocumentString(documentSource);
 
     if (frame) {
-        RefPtr<Document> oldDocument = frame->document();
+        RefPtrWillBeRawPtr<Document> oldDocument = frame->document();
         result = frame->domWindow()->installNewDocument(sourceMIMEType, init, forceXHTML);
 
         // Before parsing, we need to save & detach the old document and get the new document
@@ -101,7 +101,7 @@ PassRefPtr<Document> XSLTProcessor::createDocumentFromSource(const String& sourc
     return result.release();
 }
 
-PassRefPtr<Document> XSLTProcessor::transformToDocument(Node* sourceNode)
+PassRefPtrWillBeRawPtr<Document> XSLTProcessor::transformToDocument(Node* sourceNode)
 {
     if (!sourceNode)
         return nullptr;
@@ -162,6 +162,7 @@ void XSLTProcessor::reset()
 void XSLTProcessor::trace(Visitor* visitor)
 {
     visitor->trace(m_stylesheet);
+    visitor->trace(m_stylesheetRootNode);
 }
 
 } // namespace WebCore