[LayoutNG] Add out-of-flow descendants and offsets to NGPhysicalFragment

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

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.h b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.h
index ae3ef86eef4dc3525443e1aca1e619d5ecfe7528..b449be850530d09dd44d1f9576ab6ce806185279 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.h
@@ -23,7 +23,7 @@ namespace blink {
 // NGFragmentBase classes which transforms information into the logical
 // coordinate system.
 class CORE_EXPORT NGPhysicalFragmentBase
-    : public GarbageCollected<NGPhysicalFragmentBase> {
+    : public GarbageCollectedFinalized<NGPhysicalFragmentBase> {
  public:
   enum NGFragmentType { FragmentBox = 0, FragmentText = 1 };
 
@@ -63,6 +63,8 @@ class CORE_EXPORT NGPhysicalFragmentBase
   DEFINE_INLINE_TRACE_AFTER_DISPATCH() { visitor->trace(break_token_); }
   DECLARE_TRACE();
 
+  void finalizeGarbageCollectedObject();
+
  protected:
   NGPhysicalFragmentBase(NGPhysicalSize size,
                          NGPhysicalSize overflow,