[SVG] Resources should be laid out in dependecy order.

Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Apple Inc. 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 19 matching lines @@
 #include "core/svg/SVGParsingError.h"
 #include "core/svg/properties/SVGAnimatedPropertyMacros.h"
 #include "core/svg/properties/SVGPropertyInfo.h"
 #include "wtf/HashMap.h"
 
 namespace WebCore {
 
 class AffineTransform;
 class CSSCursorImageValue;
 class Document;
+class SubtreeLayoutScope;
 class SVGAttributeToPropertyMap;
 class SVGCursorElement;
 class SVGDocumentExtensions;
 class SVGElementInstance;
 class SVGElementRareData;
 class SVGSVGElement;
 
 void mapAttributeToCSSProperty(HashMap<StringImpl*, CSSPropertyID>* propertyNameToIdMap, const QualifiedName& attrName);
 
 class SVGElement : public Element, public SVGLangSpace {
@@ skipping 76 matching lines @@
     MutableStylePropertySet* ensureAnimatedSMILStyleProperties();
     void setUseOverrideComputedStyle(bool);
 
     virtual bool haveLoadedRequiredResources();
 
     virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture) OVERRIDE;
     virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture) OVERRIDE;
 
     virtual bool shouldMoveToFlowThread(RenderStyle*) const OVERRIDE;
 
+    void invalidateRelativeLengthClients(SubtreeLayoutScope* = 0);
+
 protected:
     SVGElement(const QualifiedName&, Document&, ConstructionType = CreateSVGElement);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual void finishParsingChildren();
     virtual void attributeChanged(const QualifiedName&, const AtomicString&, AttributeModificationReason = ModifiedDirectly) OVERRIDE;
     virtual bool childShouldCreateRenderer(const Node& child) const OVERRIDE;
 
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
@@ skipping 33 matching lines @@
     virtual bool isSupported(StringImpl* feature, StringImpl* version) const;
 
     void mapInstanceToElement(SVGElementInstance*);
     void removeInstanceMapping(SVGElementInstance*);
 
     HashSet<SVGElement*> m_elementsWithRelativeLengths;
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGElement)
         DECLARE_ANIMATED_STRING(ClassName, className)
     END_DECLARE_ANIMATED_PROPERTIES
+
+#if !ASSERT_DISABLED
+    bool m_inRelativeLengthClientsInvalidation;
+#endif
 };
 
 struct SVGAttributeHashTranslator {
     static unsigned hash(const QualifiedName& key)
     {
         if (key.hasPrefix()) {
             QualifiedNameComponents components = { nullAtom.impl(), key.localName().impl(), key.namespaceURI().impl() };
             return hashComponents(components);
         }
         return DefaultHash<QualifiedName>::Hash::hash(key);
     }
     static bool equal(const QualifiedName& a, const QualifiedName& b) { return a.matches(b); }
 };
 
 inline SVGElement* toSVGElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isSVGElement());
     return static_cast<SVGElement*>(node);
 }
 
 inline const SVGElement* toSVGElement(const Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isSVGElement());
     return static_cast<const SVGElement*>(node);
 }
 
 }
 
 #endif