WIP for display item list backed by ListContainer

Source/platform/graphics/paint/FilterDisplayItem.h

Index: Source/platform/graphics/paint/FilterDisplayItem.h
diff --git a/Source/platform/graphics/paint/FilterDisplayItem.h b/Source/platform/graphics/paint/FilterDisplayItem.h
index 549938edb3b21e503b5897c8077406360ce98987..4383276e3e10985b76939c9e155d56ea57910859 100644
--- a/Source/platform/graphics/paint/FilterDisplayItem.h
+++ b/Source/platform/graphics/paint/FilterDisplayItem.h
@@ -17,16 +17,17 @@
 namespace blink {
 
 class PLATFORM_EXPORT BeginFilterDisplayItem : public PairedBeginDisplayItem {
-    WTF_MAKE_FAST_ALLOCATED(BeginFilterDisplayItem);
 public:
-    static PassOwnPtr<BeginFilterDisplayItem> create(const DisplayItemClientWrapper& client, PassRefPtr<SkImageFilter> imageFilter, const FloatRect& bounds)
+    void setNew(PassRefPtr<SkImageFilter> imageFilter, FloatRect& bounds)
     {
-        return adoptPtr(new BeginFilterDisplayItem(client, imageFilter, bounds));
+        m_imageFilter = imageFilter;
+        m_bounds = bounds;
     }
-
-    static PassOwnPtr<BeginFilterDisplayItem> create(const DisplayItemClientWrapper& client, PassRefPtr<SkImageFilter> imageFilter, const FloatRect& bounds, PassOwnPtr<WebFilterOperations> filterOperations)
+    void setNew(PassRefPtr<SkImageFilter> imageFilter, FloatRect& bounds, PassOwnPtr<WebFilterOperations> filterOperations)
     {
-        return adoptPtr(new BeginFilterDisplayItem(client, imageFilter, bounds, filterOperations));
+        m_imageFilter = imageFilter;
+        m_bounds = bounds;
+        m_webFilterOperations = filterOperations;
     }
 
     virtual void replay(GraphicsContext&) override;
@@ -34,9 +35,6 @@ public:
     virtual bool drawsContent() const override;
 
 private:
-    BeginFilterDisplayItem(const DisplayItemClientWrapper&, PassRefPtr<SkImageFilter>, const FloatRect& bounds);
-    BeginFilterDisplayItem(const DisplayItemClientWrapper&, PassRefPtr<SkImageFilter>, const FloatRect& bounds, PassOwnPtr<WebFilterOperations>);
-
 #ifndef NDEBUG
     virtual void dumpPropertiesAsDebugString(WTF::StringBuilder&) const override;
 #endif
@@ -44,20 +42,11 @@ private:
     // FIXME: m_imageFilter should be replaced with m_webFilterOperations when copying data to the compositor.
     RefPtr<SkImageFilter> m_imageFilter;
     OwnPtr<WebFilterOperations> m_webFilterOperations;
-    const FloatRect m_bounds;
+    FloatRect m_bounds;
 };
 
 class PLATFORM_EXPORT EndFilterDisplayItem : public PairedEndDisplayItem {
-    WTF_MAKE_FAST_ALLOCATED(EndFilterDisplayItem);
 public:
-    static PassOwnPtr<EndFilterDisplayItem> create(const DisplayItemClientWrapper& client)
-    {
-        return adoptPtr(new EndFilterDisplayItem(client));
-    }
-
-    EndFilterDisplayItem(const DisplayItemClientWrapper& client)
-        : PairedEndDisplayItem(client, EndFilter) { }
-
     virtual void replay(GraphicsContext&) override;
     virtual void appendToWebDisplayItemList(WebDisplayItemList*) const override;