[LayoutNG] Paint inlines from the fragment tree

third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h
index bce1947420922c527c4e2971d4994c0b94195148..dbdf9d60c19f3811dce131a074c7fa5c027d72a5 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.h
@@ -11,6 +11,7 @@
 #include "core/layout/ng/geometry/ng_physical_size.h"
 #include "core/layout/ng/ng_break_token.h"
 #include "platform/LayoutUnit.h"
+#include "platform/graphics/paint/DisplayItemClient.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/RefPtr.h"
 #include "platform/wtf/Vector.h"
@@ -31,7 +32,8 @@ class LayoutObject;
 // Layout code should only access geometry information through the
 // NGFragment wrapper classes which transforms information into the logical
 // coordinate system.
-class CORE_EXPORT NGPhysicalFragment : public RefCounted<NGPhysicalFragment> {
+class CORE_EXPORT NGPhysicalFragment : public RefCounted<NGPhysicalFragment>,
+                                       public DisplayItemClient {
  public:
   enum NGFragmentType {
     kFragmentBox = 0,
@@ -64,6 +66,7 @@ class CORE_EXPORT NGPhysicalFragment : public RefCounted<NGPhysicalFragment> {
 
   // Bitmask for border edges, see NGPaintBorderEdge.
   unsigned BorderEdges() const { return paint_border_edge_; }
+
   NGPixelSnappedPhysicalBoxStrut BorderWidths() const;
 
   // Returns the offset relative to the parent fragment's content-box.
@@ -79,6 +82,20 @@ class CORE_EXPORT NGPhysicalFragment : public RefCounted<NGPhysicalFragment> {
   // with LegacyLayout.
   LayoutObject* GetLayoutObject() const { return layout_object_; }
 
+  // Legacy LayoutObject methods. Need to be reviewed.
+  bool HasOverflowClip() const { return false; }
+
+  // DisplayItemClient methods
+  String DebugName() const override { return "NGPhysicalFragment"; }
+  LayoutRect VisualRect() const {
+    return LayoutRect(LayoutPoint(), LayoutSize(Size().width, Size().height));
+  }
+
+  LayoutRect VisualOverflowRect() const {
+    // TODO(layout-dev): Implement?
+    return VisualRect();
+  }
+
   // Should only be used by the parent fragment's layout.
   void SetOffset(NGPhysicalOffset offset) {
     DCHECK(!is_placed_);
@@ -87,7 +104,6 @@ class CORE_EXPORT NGPhysicalFragment : public RefCounted<NGPhysicalFragment> {
   }
 
   bool IsPlaced() const { return is_placed_; }
-
   String ToString() const;
 
   // Override RefCounted's deref() to ensure operator delete is called on the