InlinedVisitor: Migrate html to use inlined tracing

Source/core/html/shadow/PickerIndicatorElement.cpp

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * 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
@@ skipping 173 matching lines @@
     // Don't make this focusable if we are in layout tests in order to avoid to
     // break existing tests.
     // FIXME: We should have a way to disable accessibility in layout tests.
     if (LayoutTestSupport::isRunningLayoutTest())
         return;
     setAttribute(tabindexAttr, "0");
     setAttribute(aria_haspopupAttr, "true");
     setAttribute(roleAttr, "button");
 }
 
-void PickerIndicatorElement::trace(Visitor* visitor)
+DEFINE_TRACE(PickerIndicatorElement)
 {
     visitor->trace(m_pickerIndicatorOwner);
     HTMLDivElement::trace(visitor);
 }
 
 }
 
 #endif