Oilpan: Remove a visitor parameter from isHeapObjectAlive

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"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
@@ skipping 33 matching lines @@
     visitor->trace(m_correspondingElement);
     visitor->trace(m_owner);
     visitor->template registerWeakMembers<SVGElementRareData, &SVGElementRareData::processWeakMembers>(this);
 #endif
 }
 
 void SVGElementRareData::processWeakMembers(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
         ASSERT(m_owner);
-        if (!visitor->isHeapObjectAlive(m_cursorElement))
+        if (!Heap::isHeapObjectAlive(m_cursorElement))
             m_cursorElement = nullptr;
 
-        if (!visitor->isHeapObjectAlive(m_cursorImageValue)) {
+        if (!Heap::isHeapObjectAlive(m_cursorImageValue)) {
             // The owning SVGElement is still alive and if it is pointing to an SVGCursorElement
             // we unregister it when the CSSCursorImageValue dies.
             if (m_cursorElement) {
                 m_cursorElement->removeReferencedElement(m_owner);
                 m_cursorElement = nullptr;
             }
             m_cursorImageValue = nullptr;
         }
-        ASSERT(!m_cursorElement || visitor->isHeapObjectAlive(m_cursorElement));
-        ASSERT(!m_cursorImageValue || visitor->isHeapObjectAlive(m_cursorImageValue));
+        ASSERT(!m_cursorElement || Heap::isHeapObjectAlive(m_cursorElement));
+        ASSERT(!m_cursorImageValue || Heap::isHeapObjectAlive(m_cursorImageValue));
 #endif
 }
 
 AffineTransform* SVGElementRareData::animateMotionTransform()
 {
     if (!m_animateMotionTransform)
         m_animateMotionTransform = adoptPtr(new AffineTransform);
     return m_animateMotionTransform.get();
 }
 
 }