[LayoutNG] Merge NGDerivedConstraintSpace into NGConstraintSpace

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

Index: third_party/WebKit/Source/core/layout/ng/ng_derived_constraint_space.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_derived_constraint_space.h b/third_party/WebKit/Source/core/layout/ng/ng_derived_constraint_space.h
deleted file mode 100644
index 9b46495359a7254676cf37ba39a9306d73e74d46..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/layout/ng/ng_derived_constraint_space.h
+++ /dev/null
@@ -1,57 +0,0 @@
-// 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 NGDerivedConstraintSpace_h
-#define NGDerivedConstraintSpace_h
-
-#include "core/CoreExport.h"
-#include "core/layout/ng/ng_constraint_space.h"
-#include "core/layout/ng/ng_units.h"
-#include "platform/LayoutUnit.h"
-#include "wtf/DoublyLinkedList.h"
-
-namespace blink {
-
-class CORE_EXPORT NGDerivedConstraintSpace final : public NGConstraintSpace {
- public:
-  // Constructs a NGConstraintSpace from legacy layout object.
-  static NGDerivedConstraintSpace* CreateFromLayoutObject(const LayoutBox&);
-
-  NGDerivedConstraintSpace(NGWritingMode,
-                           NGLogicalSize container_size,
-                           bool inline_triggers,
-                           bool block_triggers,
-                           bool fixed_inline,
-                           bool fixed_block,
-                           NGFragmentationType);
-
-  NGLogicalOffset Offset() const { return offset_; }
-  NGLogicalSize Size() const override { return size_; }
-  NGDirection Direction() const { return direction_; }
-
-  // TODO(layout-ng): All exclusion operations on a NGDerivedConstraintSpace
-  // should be performed on it's parent if it exists. This is so that if a float
-  // is added by a child an arbitary sibling can avoid/clear that float.
-  // Alternatively the list of exclusions could be shared between constraint
-  // spaces.
-
-  DEFINE_INLINE_VIRTUAL_TRACE() {
-    visitor->trace(parent_);
-    NGConstraintSpace::trace(visitor);
-  }
-
- private:
-  Member<NGConstraintSpace> parent_;
-  NGLogicalOffset offset_;
-
-  // TODO(layout-ng) move to NGPhysicalConstraintSpace?
-  NGLogicalSize size_;
-
-  // TODO(layout-ng) move to NGConstraintSpace?
-  NGDirection direction_;
-};
-
-}  // namespace blink
-
-#endif  // NGDerivedConstraintSpace_h