Remove SVGElementInstance

Source/core/svg/SVGElementInstance.cpp

Index: Source/core/svg/SVGElementInstance.cpp
diff --git a/Source/core/svg/SVGElementInstance.cpp b/Source/core/svg/SVGElementInstance.cpp
deleted file mode 100644
index 6c391e885fe1c050d631008a5367e209c85cae5e..0000000000000000000000000000000000000000
--- a/Source/core/svg/SVGElementInstance.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) Research In Motion Limited 2010. All rights reserved.
- * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-
-#include "core/svg/SVGElementInstance.h"
-
-#include "core/dom/ContainerNodeAlgorithms.h"
-#include "core/events/Event.h"
-#include "core/events/EventListener.h"
-#include "core/svg/SVGElement.h"
-#include "core/svg/SVGUseElement.h"
-
-#include "wtf/RefCountedLeakCounter.h"
-
-namespace WebCore {
-
-DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, instanceCounter, ("WebCoreSVGElementInstance"));
-
-PassRefPtrWillBeRawPtr<SVGElementInstance> SVGElementInstance::create(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtrWillBeRawPtr<SVGElement> originalElement)
-{
-    return adoptRefWillBeRefCountedGarbageCollected(new SVGElementInstance(correspondingUseElement, directUseElement, originalElement));
-}
-
-SVGElementInstance::SVGElementInstance(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtrWillBeRawPtr<SVGElement> originalElement)
-    : m_parentInstance(nullptr)
-    , m_correspondingUseElement(correspondingUseElement)
-    , m_directUseElement(directUseElement)
-    , m_element(originalElement)
-    , m_previousSibling(nullptr)
-    , m_nextSibling(nullptr)
-    , m_firstChild(nullptr)
-    , m_lastChild(nullptr)
-{
-    ASSERT(m_correspondingUseElement);
-    ASSERT(m_element);
-    ScriptWrappable::init(this);
-
-#ifndef NDEBUG
-    instanceCounter.increment();
-#endif
-}
-
-SVGElementInstance::~SVGElementInstance()
-{
-#ifndef NDEBUG
-    instanceCounter.decrement();
-#endif
-
-#if !ENABLE(OILPAN)
-    // Call detach because we may be deleted directly if we are a child of a detached instance.
-    detach();
-    m_element = nullptr;
-#endif
-}
-
-// It's important not to inline removedLastRef, because we don't want to inline the code to
-// delete an SVGElementInstance at each deref call site.
-#if !ENABLE(OILPAN)
-void SVGElementInstance::removedLastRef()
-{
-#if SECURITY_ASSERT_ENABLED
-    m_deletionHasBegun = true;
-#endif
-    delete this;
-}
-#endif
-
-void SVGElementInstance::detach()
-{
-    // Clear all pointers. When the node is detached from the shadow DOM it should be removed but,
-    // due to ref counting, it may not be. So clear everything to avoid dangling pointers.
-
-    for (SVGElementInstance* node = firstChild(); node; node = node->nextSibling())
-        node->detach();
-
-    // Deregister as instance for passed element, if we haven't already.
-    if (shadowTreeElement() && m_element->instancesForElement().contains(shadowTreeElement()))
-        m_element->removeInstanceMapping(shadowTreeElement());
-
-    m_shadowTreeElement = nullptr;
-
-    m_directUseElement = nullptr;
-    m_correspondingUseElement = nullptr;
-
-#if !ENABLE(OILPAN)
-    removeDetachedChildrenInContainer<SVGElementInstance, SVGElementInstance>(*this);
-#endif
-}
-
-void SVGElementInstance::setShadowTreeElement(SVGElement* element)
-{
-    ASSERT(element);
-    m_shadowTreeElement = element;
-    // Register as instance for passed element.
-    m_element->mapInstanceToElement(shadowTreeElement());
-
-}
-
-void SVGElementInstance::appendChild(PassRefPtrWillBeRawPtr<SVGElementInstance> child)
-{
-    appendChildToContainer<SVGElementInstance, SVGElementInstance>(*child, *this);
-}
-
-void SVGElementInstance::trace(Visitor* visitor)
-{
-    visitor->trace(m_parentInstance);
-    visitor->trace(m_correspondingUseElement);
-    visitor->trace(m_directUseElement);
-    visitor->trace(m_element);
-    visitor->trace(m_shadowTreeElement);
-    visitor->trace(m_previousSibling);
-    visitor->trace(m_nextSibling);
-    visitor->trace(m_firstChild);
-    visitor->trace(m_lastChild);
-}
-
-}