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

Source/core/editing/TextInsertionBaseCommand.cpp

 /*
  * Copyright (C) 2012 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
 
 String dispatchBeforeTextInsertedEvent(const String& text, const VisibleSelection& selectionForInsertion, bool insertionIsForUpdatingComposition)
 {
     if (insertionIsForUpdatingComposition)
         return text;
 
     String newText = text;
     if (Node* startNode = selectionForInsertion.start().containerNode()) {
         if (startNode->rootEditableElement()) {
             // Send BeforeTextInsertedEvent. The event handler will update text if necessary.
-            RefPtr<BeforeTextInsertedEvent> evt = BeforeTextInsertedEvent::create(text);
+            RefPtrWillBeRawPtr<BeforeTextInsertedEvent> evt = BeforeTextInsertedEvent::create(text);
             startNode->rootEditableElement()->dispatchEvent(evt, IGNORE_EXCEPTION);
             newText = evt->text();
         }
     }
     return newText;
 }
 
 bool canAppendNewLineFeedToSelection(const VisibleSelection& selection)
 {
     Node* node = selection.rootEditableElement();
     if (!node)
         return false;
 
-    RefPtr<BeforeTextInsertedEvent> event = BeforeTextInsertedEvent::create(String("\n"));
+    RefPtrWillBeRawPtr<BeforeTextInsertedEvent> event = BeforeTextInsertedEvent::create(String("\n"));
     node->dispatchEvent(event, IGNORE_EXCEPTION);
     return event->text().length();
 }
 
 }