Oilpan: move WebKitPoint to the oilpan heap.

Source/core/frame/DOMWindow.cpp

Index: Source/core/frame/DOMWindow.cpp
diff --git a/Source/core/frame/DOMWindow.cpp b/Source/core/frame/DOMWindow.cpp
index 9d5df520830388ce52fba33213bdf1a20fd17785..92ef9cb3b56f35251a53b70ce3163141ac3efb89 100644
--- a/Source/core/frame/DOMWindow.cpp
+++ b/Source/core/frame/DOMWindow.cpp
@@ -1317,7 +1317,7 @@ PassRefPtrWillBeRawPtr<CSSRuleList> DOMWindow::getMatchedCSSRules(Element* eleme
     return m_frame->document()->ensureStyleResolver().pseudoCSSRulesForElement(element, pseudoId, rulesToInclude);
 }
 
-PassRefPtr<DOMPoint> DOMWindow::webkitConvertPointFromNodeToPage(Node* node, const DOMPoint* p) const
+PassRefPtrWillBeRawPtr<DOMPoint> DOMWindow::webkitConvertPointFromNodeToPage(Node* node, const DOMPoint* p) const
 {
     if (!node || !p)
         return nullptr;
@@ -1332,7 +1332,7 @@ PassRefPtr<DOMPoint> DOMWindow::webkitConvertPointFromNodeToPage(Node* node, con
     return DOMPoint::create(pagePoint.x(), pagePoint.y());
 }
 
-PassRefPtr<DOMPoint> DOMWindow::webkitConvertPointFromPageToNode(Node* node, const DOMPoint* p) const
+PassRefPtrWillBeRawPtr<DOMPoint> DOMWindow::webkitConvertPointFromPageToNode(Node* node, const DOMPoint* p) const
 {
     if (!node || !p)
         return nullptr;