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

third_party/WebKit/Source/core/layout/ng/geometry/ng_box_strut_test.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_box_strut.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blink {
-
-namespace {
-
-// Ideally, this would be tested by NGBoxStrut::ConvertToPhysical, but
-// this has not been implemented yet.
-TEST(NGGeometryUnitsTest, ConvertPhysicalStrutToLogical) {
-  LayoutUnit left{5}, right{10}, top{15}, bottom{20};
-  NGPhysicalBoxStrut physical{left, right, top, bottom};
-
-  NGBoxStrut logical =
-      physical.ConvertToLogical(kHorizontalTopBottom, TextDirection::kLtr);
-  EXPECT_EQ(left, logical.inline_start);
-  EXPECT_EQ(top, logical.block_start);
-
-  logical =
-      physical.ConvertToLogical(kHorizontalTopBottom, TextDirection::kRtl);
-  EXPECT_EQ(right, logical.inline_start);
-  EXPECT_EQ(top, logical.block_start);
-
-  logical = physical.ConvertToLogical(kVerticalLeftRight, TextDirection::kLtr);
-  EXPECT_EQ(top, logical.inline_start);
-  EXPECT_EQ(left, logical.block_start);
-
-  logical = physical.ConvertToLogical(kVerticalLeftRight, TextDirection::kRtl);
-  EXPECT_EQ(bottom, logical.inline_start);
-  EXPECT_EQ(left, logical.block_start);
-
-  logical = physical.ConvertToLogical(kVerticalRightLeft, TextDirection::kLtr);
-  EXPECT_EQ(top, logical.inline_start);
-  EXPECT_EQ(right, logical.block_start);
-
-  logical = physical.ConvertToLogical(kVerticalRightLeft, TextDirection::kRtl);
-  EXPECT_EQ(bottom, logical.inline_start);
-  EXPECT_EQ(right, logical.block_start);
-}
-
-}  // namespace
-
-}  // namespace blink