[LayoutNG] Move NGFloatingObject off Oilpan

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

Index: third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.h b/third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.h
index fd11878deac463cf348e87ba50ea569ccefda531..7fe1233131673e8e72f99476702dd22716029137 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.h
@@ -38,7 +38,7 @@ class CORE_EXPORT NGFragmentBuilder final {
   NGFragmentBuilder& AddChild(RefPtr<NGPhysicalFragment>,
                               const NGLogicalOffset&);
 
-  NGFragmentBuilder& AddFloatingObject(NGFloatingObject*,
+  NGFragmentBuilder& AddFloatingObject(RefPtr<NGFloatingObject>,
                                        const NGLogicalOffset&);
 
   NGFragmentBuilder& SetBfcOffset(const NGLogicalOffset& offset);
@@ -103,12 +103,12 @@ class CORE_EXPORT NGFragmentBuilder final {
                                                 unsigned end_offset);
 
   // Mutable list of floats that need to be positioned.
-  Vector<Persistent<NGFloatingObject>>& MutableUnpositionedFloats() {
+  Vector<RefPtr<NGFloatingObject>>& MutableUnpositionedFloats() {
     return unpositioned_floats_;
   }
 
   // List of floats that need to be positioned.
-  const Vector<Persistent<NGFloatingObject>>& UnpositionedFloats() const {
+  const Vector<RefPtr<NGFloatingObject>>& UnpositionedFloats() const {
     return unpositioned_floats_;
   }
 
@@ -162,10 +162,10 @@ class CORE_EXPORT NGFragmentBuilder final {
 
   // Floats that need to be positioned by the next in-flow fragment that can
   // determine its block position in space.
-  Vector<Persistent<NGFloatingObject>> unpositioned_floats_;
+  Vector<RefPtr<NGFloatingObject>> unpositioned_floats_;
 
   Vector<NGLogicalOffset> floating_object_offsets_;
-  Vector<Persistent<NGFloatingObject>> positioned_floats_;
+  Vector<RefPtr<NGFloatingObject>> positioned_floats_;
 
   WTF::Optional<NGLogicalOffset> bfc_offset_;
   NGMarginStrut end_margin_strut_;