Revert of [LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/layout/ng/geometry/ng_static_position.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 NGStaticPosition_h
-#define NGStaticPosition_h
-
-#include "core/CoreExport.h"
-#include "core/layout/ng/geometry/ng_physical_offset.h"
-#include "core/layout/ng/ng_writing_mode.h"
-#include "platform/LayoutUnit.h"
-#include "platform/text/TextDirection.h"
-
-namespace blink {
-
-// Represents static position of an out of flow descendant.
-struct CORE_EXPORT NGStaticPosition {
-  enum Type { kTopLeft, kTopRight, kBottomLeft, kBottomRight };
-
-  Type type;  // Logical corner that corresponds to physical top left.
-  NGPhysicalOffset offset;
-
-  // Creates a position with proper type wrt writing mode and direction.
-  static NGStaticPosition Create(NGWritingMode,
-                                 TextDirection,
-                                 NGPhysicalOffset);
-  // Left/Right/TopPosition functions map static position to
-  // left/right/top edge wrt container space.
-  // The function arguments are required to solve the equation:
-  // contaner_size = left + margin_left + width + margin_right + right
-  LayoutUnit LeftPosition(LayoutUnit container_size,
-                          LayoutUnit width,
-                          LayoutUnit margin_left,
-                          LayoutUnit margin_right) const {
-    return GenericPosition(HasLeft(), offset.left, container_size, width,
-                           margin_left, margin_right);
-  }
-  LayoutUnit RightPosition(LayoutUnit container_size,
-                           LayoutUnit width,
-                           LayoutUnit margin_left,
-                           LayoutUnit margin_right) const {
-    return GenericPosition(!HasLeft(), offset.left, container_size, width,
-                           margin_left, margin_right);
-  }
-  LayoutUnit TopPosition(LayoutUnit container_size,
-                         LayoutUnit height,
-                         LayoutUnit margin_top,
-                         LayoutUnit margin_bottom) const {
-    return GenericPosition(HasTop(), offset.top, container_size, height,
-                           margin_top, margin_bottom);
-  }
-
- private:
-  bool HasTop() const { return type == kTopLeft || type == kTopRight; }
-  bool HasLeft() const { return type == kTopLeft || type == kBottomLeft; }
-  LayoutUnit GenericPosition(bool position_matches,
-                             LayoutUnit position,
-                             LayoutUnit container_size,
-                             LayoutUnit length,
-                             LayoutUnit margin_start,
-                             LayoutUnit margin_end) const {
-    DCHECK_GE(container_size, LayoutUnit());
-    DCHECK_GE(length, LayoutUnit());
-    if (position_matches)
-      return position;
-    else
-      return container_size - position - length - margin_start - margin_end;
-  }
-};
-
-}  // namespace blink
-
-#endif  // NGStaticPosition_h