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

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

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.cc b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.cc
index e67874631162059d63fa68d355f712b96d599dd9..3518e585411fc5c4f44bddd5a91efc5a65b82d5d 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.cc
@@ -16,4 +16,11 @@ DEFINE_TRACE(NGPhysicalFragmentBase) {
     static_cast<NGPhysicalFragment*>(this)->traceAfterDispatch(visitor);
 }
 
+void NGPhysicalFragmentBase::finalizeGarbageCollectedObject() {
+  if (Type() == FragmentText)
+    static_cast<NGPhysicalTextFragment*>(this)->~NGPhysicalTextFragment();
+  else
+    static_cast<NGPhysicalFragment*>(this)->~NGPhysicalFragment();
+}
+
 }  // namespace blink