[LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/layout/ng/ng_min_max_content_size_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/ng_min_max_content_size.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+namespace {
+
+TEST(NGUnitsTest, ShrinkToFit) {
+  MinMaxContentSize sizes;
+
+  sizes.min_content = LayoutUnit(100);
+  sizes.max_content = LayoutUnit(200);
+  EXPECT_EQ(LayoutUnit(200), sizes.ShrinkToFit(LayoutUnit(300)));
+
+  sizes.min_content = LayoutUnit(100);
+  sizes.max_content = LayoutUnit(300);
+  EXPECT_EQ(LayoutUnit(200), sizes.ShrinkToFit(LayoutUnit(200)));
+
+  sizes.min_content = LayoutUnit(200);
+  sizes.max_content = LayoutUnit(300);
+  EXPECT_EQ(LayoutUnit(200), sizes.ShrinkToFit(LayoutUnit(100)));
+}
+
+}  // namespace
+
+}  // namespace blink