Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/modules/device_orientation/DeviceOrientationEvent.cpp

 /*
  * Copyright 2010, The Android Open Source Project
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 36 matching lines @@
 
 void DeviceOrientationEvent::initDeviceOrientationEvent(const AtomicString& type, bool bubbles, bool cancelable, const Nullable<double>& alpha, const Nullable<double>& beta, const Nullable<double>& gamma, const Nullable<bool>& absolute)
 {
     if (dispatched())
         return;
 
     initEvent(type, bubbles, cancelable);
     m_orientation = DeviceOrientationData::create(alpha, beta, gamma, absolute);
 }
 
-DeviceOrientationData* DeviceOrientationEvent::orientation() const
-{
-    return m_orientation.get();
-}
-
 double DeviceOrientationEvent::alpha(bool& isNull) const
 {
     if (m_orientation->canProvideAlpha())
         return m_orientation->alpha();
 
     isNull = true;
     return 0;
 }
 
 double DeviceOrientationEvent::beta(bool& isNull) const
@@ skipping 28 matching lines @@
     return EventNames::DeviceOrientationEvent;
 }
 
 DEFINE_TRACE(DeviceOrientationEvent)
 {
     visitor->trace(m_orientation);
     Event::trace(visitor);
 }
 
 } // namespace blink