Move InvalidationGuard/InstanceUpdateBlocker out of SVGElementInstance

Source/core/svg/SVGElementInstance.cpp

 /*
  * 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.
  *
@@ skipping 145 matching lines @@
     // Register as instance for passed element.
     m_element->mapInstanceToElement(this);
 
 }
 
 void SVGElementInstance::appendChild(PassRefPtr<SVGElementInstance> child)
 {
     appendChildToContainer<SVGElementInstance, SVGElementInstance>(*child, *this);
 }
 
-void SVGElementInstance::invalidateAllInstancesOfElement(SVGElement* element)
-{
-    if (!element || !element->inDocument())
-        return;
-
-    if (element->instanceUpdatesBlocked())
-        return;
-
-    const HashSet<SVGElement*>& set = element->instancesForElement();
-    if (set.isEmpty())
-        return;
-
-    // Mark all use elements referencing 'element' for rebuilding
-    const HashSet<SVGElement*>::const_iterator end = set.end();
-    for (HashSet<SVGElement*>::const_iterator it = set.begin(); it != end; ++it) {
-        (*it)->setCorrespondingElement(0);
-
-        if (SVGUseElement* element = (*it)->correspondingUseElement()) {
-            ASSERT(element->inDocument());
-            element->invalidateShadowTree();
-        }
-    }
-
-    element->document().updateRenderTreeIfNeeded();
-}
-
 const AtomicString& SVGElementInstance::interfaceName() const
 {
     return EventTargetNames::SVGElementInstance;
 }
 
 ExecutionContext* SVGElementInstance::executionContext() const
 {
     return &m_element->document();
 }
 
@@ skipping 38 matching lines @@
 }
 
 EventTargetData& SVGElementInstance::ensureEventTargetData()
 {
     // EventTarget would use these methods if we were actually using its add/removeEventListener logic.
     // As we're forwarding those calls to the correspondingElement(), no one should ever call this function.
     ASSERT_NOT_REACHED();
     return *eventTargetData();
 }
 
-SVGElementInstance::InstanceUpdateBlocker::InstanceUpdateBlocker(SVGElement* targetElement)
-    : m_targetElement(targetElement)
-{
-    if (m_targetElement)
-        m_targetElement->setInstanceUpdatesBlocked(true);
 }
-
-SVGElementInstance::InstanceUpdateBlocker::~InstanceUpdateBlocker()
-{
-    if (m_targetElement)
-        m_targetElement->setInstanceUpdatesBlocked(false);
-}
-
-}