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

Source/modules/device_orientation/DeviceOrientationController.cpp

 /*
  * Copyright 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. 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 copyright
@@ skipping 61 matching lines @@
 DeviceOrientationData* DeviceOrientationController::lastData()
 {
     return m_overrideOrientationData ? m_overrideOrientationData.get() : DeviceOrientationDispatcher::instance().latestDeviceOrientationData();
 }
 
 bool DeviceOrientationController::hasLastData()
 {
     return lastData();
 }
 
-PassRefPtr<Event> DeviceOrientationController::getLastEvent()
+PassRefPtrWillBeRawPtr<Event> DeviceOrientationController::getLastEvent()
 {
     return DeviceOrientationEvent::create(EventTypeNames::deviceorientation, lastData());
 }
 
 void DeviceOrientationController::registerWithDispatcher()
 {
     DeviceOrientationDispatcher::instance().addDeviceOrientationController(this);
 }
 
 void DeviceOrientationController::unregisterWithDispatcher()
@@ skipping 41 matching lines @@
 {
     if (!m_overrideOrientationData)
         return;
     m_overrideOrientationData.clear();
     DeviceOrientationData* orientation = lastData();
     if (orientation)
         didChangeDeviceOrientation(orientation);
 }
 
 } // namespace WebCore