[LayoutNG] Move NGConstraintSpaceBuilder off Oilpan and DISALLOW_NEW.

third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.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 NGConstraintSpaceBuilder_h
 #define NGConstraintSpaceBuilder_h
 
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/layout/ng/ng_units.h"
+#include "wtf/Allocator.h"
 #include "wtf/Optional.h"
 
 namespace blink {
 
-class CORE_EXPORT NGConstraintSpaceBuilder final
-    : public GarbageCollectedFinalized<NGConstraintSpaceBuilder> {
+class CORE_EXPORT NGConstraintSpaceBuilder final {
+  DISALLOW_NEW();
+
  public:
   NGConstraintSpaceBuilder(const NGConstraintSpace* parent_space);
 
   NGConstraintSpaceBuilder(NGWritingMode writing_mode);
 
   NGConstraintSpaceBuilder& SetAvailableSize(NGLogicalSize available_size);
 
   NGConstraintSpaceBuilder& SetPercentageResolutionSize(
       NGLogicalSize percentage_resolution_size);
 
@@ skipping 30 matching lines @@
   // Creates a new constraint space. This may be called multiple times, for
   // example the constraint space will be different for a child which:
   //  - Establishes a new formatting context.
   //  - Is within a fragmentation container and needs its fragmentation offset
   //    updated.
   //  - Has its size is determined by its parent layout (flex, abs-pos).
   //
   // NGWritingMode specifies the writing mode of the generated space.
   NGConstraintSpace* ToConstraintSpace(NGWritingMode);
 
-  DEFINE_INLINE_TRACE() {}
-
  private:
   // Relative to parent_writing_mode_.
   NGLogicalSize available_size_;
   // Relative to parent_writing_mode_.
   NGLogicalSize percentage_resolution_size_;
   NGPhysicalSize initial_containing_block_size_;
   LayoutUnit fragmentainer_space_available_;
 
   unsigned parent_writing_mode_ : 2;
   unsigned is_fixed_size_inline_ : 1;
   unsigned is_fixed_size_block_ : 1;
   unsigned is_shrink_to_fit_ : 1;
   unsigned is_inline_direction_triggers_scrollbar_ : 1;
   unsigned is_block_direction_triggers_scrollbar_ : 1;
   unsigned fragmentation_type_ : 2;
   unsigned is_new_fc_ : 1;
   unsigned is_anonymous_ : 1;
   unsigned text_direction_ : 1;
 
   NGMarginStrut margin_strut_;
   NGLogicalOffset bfc_offset_;
   std::shared_ptr<NGExclusions> exclusions_;
   WTF::Optional<LayoutUnit> clearance_offset_;
 };
 
 }  // namespace blink
 
 #endif  // NGConstraintSpaceBuilder