Migrate vr to use inlined tracing

Source/modules/vr/VREyeParameters.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/vr/VREyeParameters.h"
 
 namespace blink {
 
 namespace {
@@ skipping 35 matching lines @@
 }
 
 void VREyeParameters::setRenderRect(double x, double y, double width, double height)
 {
     m_renderRect->setX(x);
     m_renderRect->setY(y);
     m_renderRect->setWidth(width);
     m_renderRect->setHeight(height);
 }
 
-void VREyeParameters::trace(Visitor* visitor)
+DEFINE_TRACE(VREyeParameters)
 {
     visitor->trace(m_minimumFieldOfView);
     visitor->trace(m_maximumFieldOfView);
     visitor->trace(m_recommendedFieldOfView);
     visitor->trace(m_eyeTranslation);
     visitor->trace(m_currentFieldOfView);
     visitor->trace(m_renderRect);
 }
 
 } // namespace blink