SVG: Move/rename reference management to SVGElement

Source/core/svg/SVGElementRareData.cpp

 // Copyright 2014 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 "core/svg/SVGElementRareData.h"
 
 #include "core/css/CSSCursorImageValue.h"
 
 namespace WebCore {
@@ skipping 15 matching lines @@
         m_overrideComputedStyle = element->document().ensureStyleResolver().styleForElement(element, parentStyle, DisallowStyleSharing, MatchAllRulesExcludingSMIL);
         m_needsOverrideComputedStyleUpdate = false;
     }
     ASSERT(m_overrideComputedStyle);
     return m_overrideComputedStyle.get();
 }
 
 void SVGElementRareData::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
-    visitor->trace(m_referencingElements);
-    visitor->trace(m_referencedElements);
+    visitor->trace(m_outgoingReferences);
+    visitor->trace(m_incomingReferences);
     visitor->trace(m_animatedSMILStyleProperties);
     visitor->trace(m_elementInstances);
     visitor->trace(m_correspondingElement);
     visitor->trace(m_owner);
     visitor->registerWeakMembers<SVGElementRareData, &SVGElementRareData::processWeakMembers>(this);
 #endif
 }
 
 void SVGElementRareData::processWeakMembers(Visitor* visitor)
 {
@@ skipping 11 matching lines @@
             }
             m_cursorImageValue = nullptr;
         }
         ASSERT(!m_cursorElement || visitor->isAlive(m_cursorElement));
         ASSERT(!m_cursorImageValue || visitor->isAlive(m_cursorImageValue));
 #endif
 }
 
 
 }