Oilpan: have PendingScripts trace their script elements.

Source/core/html/HTMLViewSourceDocument.h

Index: Source/core/html/HTMLViewSourceDocument.h
diff --git a/Source/core/html/HTMLViewSourceDocument.h b/Source/core/html/HTMLViewSourceDocument.h
index 76595a26d65b07c56bbf39f251c305d00a1f195a..271c72256347cf48f4e7e07186d961cad636142d 100644
--- a/Source/core/html/HTMLViewSourceDocument.h
+++ b/Source/core/html/HTMLViewSourceDocument.h
@@ -56,13 +56,13 @@ private:
     void processCharacterToken(const String& source, HTMLToken&);
 
     void createContainingTable();
-    PassRefPtr<Element> addSpanWithClassName(const AtomicString&);
+    PassRefPtrWillBeRawPtr<Element> addSpanWithClassName(const AtomicString&);
     void addLine(const AtomicString& className);
     void finishLine();
     void addText(const String& text, const AtomicString& className);
     int addRange(const String& source, int start, int end, const AtomicString& className, bool isLink = false, bool isAnchor = false, const AtomicString& link = nullAtom);
-    PassRefPtr<Element> addLink(const AtomicString& url, bool isAnchor);
-    PassRefPtr<Element> addBase(const AtomicString& href);
+    PassRefPtrWillBeRawPtr<Element> addLink(const AtomicString& url, bool isAnchor);
+    PassRefPtrWillBeRawPtr<Element> addBase(const AtomicString& href);
 
     String m_type;
     RefPtrWillBeMember<Element> m_current;