[LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/layout/ng/ng_exclusion.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_exclusion.h"
+
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+bool NGExclusion::operator==(const NGExclusion& other) const {
+  return std::tie(other.rect, other.type) == std::tie(rect, type);
+}
+
+String NGExclusion::ToString() const {
+  return String::format("Rect: %s Type: %d", rect.ToString().ascii().data(),
+                        type);
+}
+
+NGExclusions::NGExclusions()
+    : last_left_float(nullptr), last_right_float(nullptr) {}
+
+NGExclusions::NGExclusions(const NGExclusions& other) {
+  for (const auto& exclusion : other.storage)
+    Add(*exclusion);
+}
+
+void NGExclusions::Add(const NGExclusion& exclusion) {
+  storage.push_back(WTF::makeUnique<NGExclusion>(exclusion));
+  if (exclusion.type == NGExclusion::kFloatLeft) {
+    last_left_float = storage.rbegin()->get();
+  } else if (exclusion.type == NGExclusion::kFloatRight) {
+    last_right_float = storage.rbegin()->get();
+  }
+}
+
+inline NGExclusions& NGExclusions::operator=(const NGExclusions& other) {
+  storage.clear();
+  last_left_float = nullptr;
+  last_right_float = nullptr;
+  for (const auto& exclusion : other.storage)
+    Add(*exclusion);
+  return *this;
+}
+
+}  // namespace blink