Oilpan: Remove Document* pointers in objects

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index dc44eb7ec4660f037339855976e4169f8b3c264a..dbe14a3d3a6df967de6e3f85e43de2b11b8c7d4b 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -1357,8 +1357,8 @@ private:
 
     RefPtrWillBeMember<ScriptedAnimationController> m_scriptedAnimationController;
     OwnPtr<MainThreadTaskRunner> m_taskRunner;
-    OwnPtr<TextAutosizer> m_textAutosizer;
-    OwnPtr<FastTextAutosizer> m_fastTextAutosizer;
+    OwnPtrWillBeMember<TextAutosizer> m_textAutosizer;
+    OwnPtrWillBeMember<FastTextAutosizer> m_fastTextAutosizer;
 
     RefPtrWillBeMember<CustomElementRegistrationContext> m_registrationContext;
     RefPtrWillBeMember<CustomElementMicrotaskRunQueue> m_customElementMicrotaskRunQueue;