[LayoutNG] Move NGFloatingObject off Oilpan

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NGFloatingObject_h
 #define NGFloatingObject_h
 
 #include "core/layout/ng/geometry/ng_box_strut.h"
 #include "core/layout/ng/ng_block_node.h"
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/layout/ng/ng_exclusion.h"
 #include "core/style/ComputedStyle.h"
 #include "core/style/ComputedStyleConstants.h"
-#include "platform/heap/Handle.h"
+#include "wtf/RefPtr.h"
 
 namespace blink {
 
 class NGPhysicalFragment;
 
 // Struct that keeps all information needed to position floats in LayoutNG.
-struct CORE_EXPORT NGFloatingObject
-    : public GarbageCollectedFinalized<NGFloatingObject> {
+struct CORE_EXPORT NGFloatingObject : public RefCounted<NGFloatingObject> {
   NGFloatingObject(const NGConstraintSpace* space,
                    const NGConstraintSpace* parent_space,
                    const ComputedStyle& style,
                    const NGBoxStrut& margins,
                    NGPhysicalFragment* fragment)
       : space(space),
         original_parent_space(parent_space),
         margins(margins),
         fragment(fragment) {
     exclusion_type = NGExclusion::kFloatLeft;
@@ skipping 16 matching lines @@
   RefPtr<NGPhysicalFragment> fragment;
 
   // In the case where a legacy FloatingObject is attached to not its own
   // parent, e.g. a float surrounded by a bunch of nested empty divs,
   // NG float fragment's LeftOffset() cannot be used as legacy FloatingObject's
   // left offset because that offset should be relative to the original float
   // parent.
   // {@code left_offset} is calculated when we know to which parent this float
   // would be attached.
   LayoutUnit left_offset;
-
-  DEFINE_INLINE_TRACE() {
-  }
 };
 
 }  // namespace blink
 
 #endif  // NGFloatingObject_h