[Slimming Paint] Track clip renderers

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 3dfe3725f506b6f492f5944ba53aebd018e874cc..4fd370ab13452b7bc667c25a0b751a9f4df34349 100644
--- a/Source/core/paint/ClipRecorder.h
+++ b/Source/core/paint/ClipRecorder.h
@@ -19,7 +19,7 @@ class RenderLayer;
 
 class ClipDisplayItem : public DisplayItem {
 public:
-    ClipDisplayItem(RenderObject* renderer, RenderLayer*, Type type, IntRect clipRect)
+    ClipDisplayItem(const RenderObject* renderer, RenderLayer*, Type type, IntRect clipRect)

[leviw_travelin_and_unemployed, 2014/11/13 01:46:40]

This should be a RenderLayerModelObject.

[pdr., 2014/11/13 06:49:29]

Done

         : DisplayItem(renderer, type), m_clipRect(clipRect) { }
 
     Vector<RoundedRect>& roundedRectClips() { return m_roundedRectClips; }
@@ -36,7 +36,7 @@ private:
 
 class EndClipDisplayItem : public DisplayItem {
 public:
-    EndClipDisplayItem() : DisplayItem(0, EndClip) { }
+    EndClipDisplayItem(const RenderObject* renderer) : DisplayItem(renderer, EndClip) { }
 
 private:
     virtual void replay(GraphicsContext*) override;
@@ -44,7 +44,7 @@ private:
 
 class ClipRecorder {
 public:
-    explicit ClipRecorder(RenderLayer*, GraphicsContext*, DisplayItem::Type, const ClipRect&);
+    explicit ClipRecorder(const RenderObject*, RenderLayer*, GraphicsContext*, DisplayItem::Type, const ClipRect&);
     void addRoundedRectClip(const RoundedRect&);
 
     ~ClipRecorder();
@@ -53,6 +53,7 @@ private:
     ClipDisplayItem* m_clipDisplayItem;
     GraphicsContext* m_graphicsContext;
     RenderLayer* m_renderLayer;

[leviw_travelin_and_unemployed, 2014/11/13 01:46:40]

We can kill the RenderLayer member, no?

[pdr., 2014/11/13 06:49:29]

R.I.P. RenderLayer member.

+    const RenderObject* m_renderer;
 };
 
 } // namespace blink