Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/core/editing/InputMethodController.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 182 matching lines @@
     // the DOM Event specification.
     if (Element* target = m_frame.document()->focusedElement()) {
         unsigned baseOffset = m_frame.selection().base().downstream().deprecatedEditingOffset();
         Vector<CompositionUnderline> underlines;
         for (size_t i = 0; i < m_customCompositionUnderlines.size(); ++i) {
             CompositionUnderline underline = m_customCompositionUnderlines[i];
             underline.startOffset -= baseOffset;
             underline.endOffset -= baseOffset;
             underlines.append(underline);
         }
-        RefPtr<CompositionEvent> event = CompositionEvent::create(EventTypeNames::compositionend, m_frame.domWindow(), text, underlines);
+        RefPtrWillBeRawPtr<CompositionEvent> event = CompositionEvent::create(EventTypeNames::compositionend, m_frame.domWindow(), text, underlines);
         target->dispatchEvent(event, IGNORE_EXCEPTION);
     }
 
     // If text is empty, then delete the old composition here. If text is non-empty, InsertTextCommand::input
     // will delete the old composition with an optimized replace operation.
     if (text.isEmpty() && mode != CancelComposition) {
         ASSERT(m_frame.document());
         TypingCommand::deleteSelection(*m_frame.document(), 0);
     }
 
@@ skipping 33 matching lines @@
         //    a new composition node, i.e.
         //    m_compositionNode == 0 && !text.isEmpty().
         //    Sending a compositionupdate event at this time ensures that at least one
         //    compositionupdate event is dispatched.
         // 2. Updating the existing composition node.
         //    Send a compositionupdate event when this function updates the existing composition
         //    node, i.e. m_compositionNode != 0 && !text.isEmpty().
         // 3. Canceling the ongoing composition.
         //    Send a compositionend event when function deletes the existing composition node, i.e.
         //    m_compositionNode != 0 && test.isEmpty().
-        RefPtr<CompositionEvent> event;
+        RefPtrWillBeRawPtr<CompositionEvent> event = nullptr;
         if (!hasComposition()) {
             // We should send a compositionstart event only when the given text is not empty because this
             // function doesn't create a composition node when the text is empty.
             if (!text.isEmpty()) {
                 target->dispatchEvent(CompositionEvent::create(EventTypeNames::compositionstart, m_frame.domWindow(), m_frame.selectedText(), underlines));
                 event = CompositionEvent::create(EventTypeNames::compositionupdate, m_frame.domWindow(), text, underlines);
             }
         } else {
             if (!text.isEmpty())
                 event = CompositionEvent::create(EventTypeNames::compositionupdate, m_frame.domWindow(), text, underlines);
@@ skipping 130 matching lines @@
     if (!editor().canEdit())
         return;
     PlainTextRange selectionOffsets(getSelectionOffsets());
     if (selectionOffsets.isNull())
         return;
     setSelectionOffsets(PlainTextRange(std::max(static_cast<int>(selectionOffsets.start()) - before, 0), selectionOffsets.end() + after));
     TypingCommand::deleteSelection(*m_frame.document());
 }
 
 } // namespace WebCore