Oilpan: add transition types to shadow DOM supporting objects.

Source/core/dom/shadow/ShadowRoot.cpp

Index: Source/core/dom/shadow/ShadowRoot.cpp
diff --git a/Source/core/dom/shadow/ShadowRoot.cpp b/Source/core/dom/shadow/ShadowRoot.cpp
index 1f5b2d83fda38f696c833624c2f05aea28b763b2..36405125555a3032dceb0cb35b082909837f7c4d 100644
--- a/Source/core/dom/shadow/ShadowRoot.cpp
+++ b/Source/core/dom/shadow/ShadowRoot.cpp
@@ -263,7 +263,7 @@ HTMLShadowElement* ShadowRoot::shadowInsertionPointOfYoungerShadowRoot() const
     return m_shadowRootRareData ? m_shadowRootRareData->shadowInsertionPointOfYoungerShadowRoot() : 0;
 }
 
-void ShadowRoot::setShadowInsertionPointOfYoungerShadowRoot(PassRefPtr<HTMLShadowElement> shadowInsertionPoint)
+void ShadowRoot::setShadowInsertionPointOfYoungerShadowRoot(PassRefPtrWillBeRawPtr<HTMLShadowElement> shadowInsertionPoint)
 {
     if (!m_shadowRootRareData && !shadowInsertionPoint)
         return;
@@ -306,10 +306,9 @@ void ShadowRoot::invalidateDescendantInsertionPoints()
     m_shadowRootRareData->clearDescendantInsertionPoints();
 }
 
-const Vector<RefPtr<InsertionPoint> >& ShadowRoot::descendantInsertionPoints()
+const WillBeHeapVector<RefPtrWillBeMember<InsertionPoint> >& ShadowRoot::descendantInsertionPoints()
 {
-    DEFINE_STATIC_LOCAL(const Vector<RefPtr<InsertionPoint> >, emptyList, ());
-
+    DEFINE_STATIC_LOCAL(WillBePersistentHeapVector<RefPtrWillBeMember<InsertionPoint> >, emptyList, ());
     if (m_shadowRootRareData && m_descendantInsertionPointsIsValid)
         return m_shadowRootRareData->descendantInsertionPoints();
 
@@ -318,7 +317,7 @@ const Vector<RefPtr<InsertionPoint> >& ShadowRoot::descendantInsertionPoints()
     if (!containsInsertionPoints())
         return emptyList;
 
-    Vector<RefPtr<InsertionPoint> > insertionPoints;
+    WillBeHeapVector<RefPtrWillBeMember<InsertionPoint> > insertionPoints;
     for (Element* element = ElementTraversal::firstWithin(*this); element; element = ElementTraversal::next(*element, this)) {
         if (element->isInsertionPoint())
             insertionPoints.append(toInsertionPoint(element));