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

third_party/WebKit/Source/core/layout/ng/geometry/ng_static_position.cc

-// 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.
-
-#include "core/layout/ng/geometry/ng_static_position.h"
-
-namespace blink {
-
-NGStaticPosition NGStaticPosition::Create(NGWritingMode writing_mode,
-                                          TextDirection direction,
-                                          NGPhysicalOffset offset) {
-  NGStaticPosition position;
-  position.offset = offset;
-  switch (writing_mode) {
-    case kHorizontalTopBottom:
-      position.type = (direction == TextDirection::kLtr) ? kTopLeft : kTopRight;
-      break;
-    case kVerticalRightLeft:
-    case kSidewaysRightLeft:
-      position.type =
-          (direction == TextDirection::kLtr) ? kTopRight : kBottomRight;
-      break;
-    case kVerticalLeftRight:
-      position.type =
-          (direction == TextDirection::kLtr) ? kTopLeft : kBottomLeft;
-      break;
-    case kSidewaysLeftRight:
-      position.type =
-          (direction == TextDirection::kLtr) ? kBottomLeft : kTopLeft;
-      break;
-  }
-  return position;
-}
-
-}  // namespace blink