[oilpan] Completely move HTMLFormControlElement's hierarchy to the managed heap

Source/core/editing/Editor.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 93 matching lines @@
 
 // When an event handler has moved the selection outside of a text control
 // we should use the target control's selection for this editing operation.
 VisibleSelection Editor::selectionForCommand(Event* event)
 {
     VisibleSelection selection = m_frame->selection()->selection();
     if (!event)
         return selection;
     // If the target is a text control, and the current selection is outside of its shadow tree,
     // then use the saved selection for that text control.
-    HTMLTextFormControlElement* textFormControlOfSelectionStart = enclosingTextFormControl(selection.start());
-    HTMLTextFormControlElement* textFromControlOfTarget = isHTMLTextFormControlElement(event->target()->toNode()) ? toHTMLTextFormControlElement(event->target()->toNode()) : 0;
+    Handle<HTMLTextFormControlElement> textFormControlOfSelectionStart = enclosingTextFormControl(selection.start());
+    Handle<HTMLTextFormControlElement> textFromControlOfTarget = isHTMLTextFormControlElement(event->target()->toNode()) ? toHTMLTextFormControlElement(event->target()->toNode()) : nullptr;
     if (textFromControlOfTarget && (selection.start().isNull() || textFromControlOfTarget != textFormControlOfSelectionStart)) {
         if (RefPtr<Range> range = textFromControlOfTarget->selection())
             return VisibleSelection(range.get(), DOWNSTREAM, selection.isDirectional());
     }
     return selection;
 }
 
 // Function considers Mac editing behavior a fallback when Page or Settings is not available.
 EditingBehavior Editor::behavior() const
 {
@@ skipping 2781 matching lines @@
 {
     return m_alternativeTextController->dictationAlternativesForMarker(marker);
 }
 
 void Editor::applyDictationAlternativelternative(const String& alternativeString)
 {
     m_alternativeTextController->applyDictationAlternative(alternativeString);
 }
 
 } // namespace WebCore