Revert 174382 "Oilpan: make DocumentFragment a heap allocated ob..."

trunk/Source/core/dom/Document.cpp

Index: trunk/Source/core/dom/Document.cpp
===================================================================
--- trunk/Source/core/dom/Document.cpp	(revision 174395)
+++ trunk/Source/core/dom/Document.cpp	(working copy)
@@ -867,7 +867,7 @@
     return window->frame();
 }
 
-PassRefPtrWillBeRawPtr<DocumentFragment> Document::createDocumentFragment()
+PassRefPtr<DocumentFragment> Document::createDocumentFragment()
 {
     return DocumentFragment::create(*this);
 }
@@ -985,7 +985,7 @@
             return nullptr;
         }
         DocumentFragment* oldFragment = toDocumentFragment(importedNode);
-        RefPtrWillBeRawPtr<DocumentFragment> newFragment = createDocumentFragment();
+        RefPtr<DocumentFragment> newFragment = createDocumentFragment();
         if (deep && !importContainerNodeChildren(oldFragment, newFragment, exceptionState))
             return nullptr;