Enable fast/images with slimming paint

Source/core/paint/ClipRecorder.h

Index: Source/core/paint/ClipRecorder.h
diff --git a/Source/core/paint/ClipRecorder.h b/Source/core/paint/ClipRecorder.h
index 9fea722569798fec58d068cae47a11c30744afbd..eccf137ffba1b8dcf3b583b55d65cf7ef867189e 100644
--- a/Source/core/paint/ClipRecorder.h
+++ b/Source/core/paint/ClipRecorder.h
@@ -6,16 +6,14 @@
 #define ClipRecorder_h
 
 #include "core/paint/ViewDisplayList.h"
-#include "core/rendering/LayerPaintingInfo.h"
-#include "core/rendering/PaintPhase.h"
 #include "core/rendering/RenderLayerModelObject.h"
+#include "platform/geometry/LayoutRect.h"
 #include "platform/geometry/RoundedRect.h"
-#include "wtf/Vector.h"
 
 namespace blink {
 
-class ClipRect;
-class GraphicsContext;
+class RenderLayerModelObject;
+struct PaintInfo;
 
 class ClipDisplayItem : public DisplayItem {
 public:
@@ -41,33 +39,16 @@ public:
 
 class ClipRecorder {
 public:
-
-    enum BorderRadiusClippingRule { IncludeSelfForBorderRadius, DoNotIncludeSelfForBorderRadius };
-
-    // Set rounded clip rectangles defined by border radii all the way from the LayerPaintingInfo
-    // "root" layer down to the specified layer (or the parent of said layer, in case
-    // BorderRadiusClippingRule says to skip self). fragmentOffset is used for multicol, to specify
-    // the translation required to get from flow thread coordinates to visual coordinates for a
-    // certain column.
-    // FIXME: The BorderRadiusClippingRule parameter is really useless now. If we want to skip self,
-    // why not just supply the parent layer as the first parameter instead?
-    // FIXME: The ClipRect passed is in visual coordinates (not flow thread coordinates), but at the
-    // same time we pass a fragmentOffset, so that we can translate from flow thread coordinates to
-    // visual coordinates. This may look rather confusing/redundant, but it is needed for rounded
-    // border clipping. Would be nice to clean up this.
-    explicit ClipRecorder(const RenderLayerModelObject*, GraphicsContext*, DisplayItem::Type, const ClipRect&, const LayerPaintingInfo* localPaintingInfo, const LayoutPoint& fragmentOffset, PaintLayerFlags, BorderRadiusClippingRule = IncludeSelfForBorderRadius);
-
+    ClipRecorder(RenderLayerModelObject&, const PaintInfo&, const LayoutRect& clipRect);
     ~ClipRecorder();
 
+    static DisplayItem::Type paintPhaseToClipType(PaintPhase);
 private:
-
-    void collectRoundedRectClips(RenderLayer&, const LayerPaintingInfo& localPaintingInfo, GraphicsContext*, const LayoutPoint& fragmentOffset, PaintLayerFlags,
-        BorderRadiusClippingRule, Vector<RoundedRect>& roundedRectClips);
-
-    GraphicsContext* m_graphicsContext;
-    const RenderLayerModelObject* m_renderer;
+    LayoutRect m_clipRect;
+    const PaintInfo& m_paintInfo;
+    RenderLayerModelObject& m_canvas;
 };
 
 } // namespace blink
 
-#endif // ViewDisplayList_h
+#endif // ClipRecorder_h