Out-of-line trace() methods of editing template types.

third_party/WebKit/Source/core/editing/VisiblePosition.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
  * reserved.
  * Portions Copyright (c) 2011 Motorola Mobility, 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.
@@ skipping 48 matching lines @@
     : m_positionWithAffinity(positionWithAffinity)
 #if DCHECK_IS_ON()
       ,
       m_domTreeVersion(positionWithAffinity.document()->domTreeVersion()),
       m_styleVersion(positionWithAffinity.document()->styleVersion())
 #endif
 {
 }
 
 template <typename Strategy>
+DEFINE_TRACE(VisiblePositionTemplate<Strategy>) {
+  visitor->trace(m_positionWithAffinity);
+}
+
+template <typename Strategy>
 VisiblePositionTemplate<Strategy> VisiblePositionTemplate<Strategy>::create(
     const PositionWithAffinityTemplate<Strategy>& positionWithAffinity) {
   if (positionWithAffinity.isNull())
     return VisiblePositionTemplate<Strategy>();
   DCHECK(positionWithAffinity.isConnected()) << positionWithAffinity;
 
   Document& document = *positionWithAffinity.document();
   DCHECK(!document.needsLayoutTreeUpdate());
   DocumentLifecycle::DisallowTransitionScope disallowTransition(
       document.lifecycle());
@@ skipping 126 matching lines @@
     return;
   }
   DVLOG(0) << "Cannot showTree for (nil) VisiblePosition.";
 }
 
 void showTree(const blink::VisiblePosition& vpos) {
   vpos.showTreeForThis();
 }
 
 #endif