Oilpan: make DocumentFragment a heap allocated object.

Source/core/editing/EditorCommand.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Igalia S.L.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 173 matching lines @@
         return true;
     case CommandFromDOM:
     case CommandFromDOMWithUserInterface:
         frame.editor().applyParagraphStyle(style.get());
         return true;
     }
     ASSERT_NOT_REACHED();
     return false;
 }
 
-static bool executeInsertFragment(LocalFrame& frame, PassRefPtr<DocumentFragment> fragment)
+static bool executeInsertFragment(LocalFrame& frame, PassRefPtrWillBeRawPtr<DocumentFragment> fragment)
 {
     ASSERT(frame.document());
     ReplaceSelectionCommand::create(*frame.document(), fragment, ReplaceSelectionCommand::PreventNesting, EditActionUnspecified)->apply();
     return true;
 }
 
 static bool executeInsertNode(LocalFrame& frame, PassRefPtr<Node> content)
 {
     ASSERT(frame.document());
-    RefPtr<DocumentFragment> fragment = DocumentFragment::create(*frame.document());
+    RefPtrWillBeRawPtr<DocumentFragment> fragment = DocumentFragment::create(*frame.document());
     TrackExceptionState exceptionState;
     fragment->appendChild(content, exceptionState);
     if (exceptionState.hadException())
         return false;
     return executeInsertFragment(frame, fragment.release());
 }
 
 static bool expandSelectionToGranularity(LocalFrame& frame, TextGranularity granularity)
 {
     VisibleSelection selection = frame.selection().selection();
@@ skipping 1519 matching lines @@
 {
     return m_command && m_command->isTextInsertion;
 }
 
 int Editor::Command::idForHistogram() const
 {
     return isSupported() ? m_command->idForUserMetrics : 0;
 }
 
 } // namespace WebCore