[poc] curve-filter

third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h

 /*
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 10 matching lines @@
 #define SVGResourcesCache_h
 
 #include "core/style/StyleDifference.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
+class Document;
 class LayoutObject;
 class ComputedStyle;
 class LayoutSVGResourceContainer;
 class SVGResources;
 
 class SVGResourcesCache {
     WTF_MAKE_NONCOPYABLE(SVGResourcesCache); USING_FAST_MALLOC(SVGResourcesCache);
 public:
     SVGResourcesCache();
     ~SVGResourcesCache();
 
     static SVGResources* cachedResourcesForLayoutObject(const LayoutObject*);
 
     // Called from all SVG layoutObjects addChild() methods.
     static void clientWasAddedToTree(LayoutObject*, const ComputedStyle& newStyle);
 
     // Called from all SVG layoutObjects removeChild() methods.
     static void clientWillBeRemovedFromTree(LayoutObject*);
 
     // Called from all SVG layoutObjects destroy() methods - except for LayoutSVGResourceContainer.
     static void clientDestroyed(LayoutObject*);
 
     // Called from all SVG layoutObjects layout() methods.
     static void clientLayoutChanged(LayoutObject*);
 
     // Called from all SVG layoutObjects styleDidChange() methods.
     static void clientStyleChanged(LayoutObject*, StyleDifference, const ComputedStyle& newStyle);
 
+    // A big hammer used to clear out the SVG pattern cache: refer to crbug.com/531258
+    static void invalidateAllResources(Document&);
+
 private:
     void addResourcesFromLayoutObject(LayoutObject*, const ComputedStyle&);
     void removeResourcesFromLayoutObject(LayoutObject*);
 
     typedef HashMap<const LayoutObject*, OwnPtr<SVGResources>> CacheMap;
     CacheMap m_cache;
 };
 
 }
 
 #endif