Oilpan: move Range object to the oilpan heap.

Source/core/rendering/AbstractInlineTextBox.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 131 matching lines @@
 }
 
 String AbstractInlineTextBox::text() const
 {
     if (!m_inlineTextBox || !m_renderText)
         return String();
 
     unsigned start = m_inlineTextBox->start();
     unsigned len = m_inlineTextBox->len();
     if (Node* node = m_renderText->node()) {
-        RefPtr<Range> range = Range::create(node->document());
+        RefPtrWillBeRawPtr<Range> range = Range::create(node->document());
         range->setStart(node, start, IGNORE_EXCEPTION);
         range->setEnd(node, start + len, IGNORE_EXCEPTION);
         return plainText(range.get(), TextIteratorIgnoresStyleVisibility);
     }
 
     String result = m_renderText->text().substring(start, len).simplifyWhiteSpace(WTF::DoNotStripWhiteSpace);
     if (m_inlineTextBox->nextTextBox() && m_inlineTextBox->nextTextBox()->start() > m_inlineTextBox->end() && result.length() && !result.right(1).containsOnlyWhitespace())
         return result + " ";
     return result;
 }
 
 } // namespace WebCore