[LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/layout/ng/ng_exclusion.h

Index: third_party/WebKit/Source/core/layout/ng/ng_exclusion.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_exclusion.h b/third_party/WebKit/Source/core/layout/ng/ng_exclusion.h
new file mode 100644
index 0000000000000000000000000000000000000000..b8b86edde75939f6e59a6008cc6d6c14c3e75cfa
--- /dev/null
+++ b/third_party/WebKit/Source/core/layout/ng/ng_exclusion.h
@@ -0,0 +1,57 @@
+// 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 NGExclusion_h
+#define NGExclusion_h
+
+#include "core/CoreExport.h"
+#include "core/layout/ng/geometry/ng_logical_rect.h"
+#include "wtf/Vector.h"
+
+namespace blink {
+
+// Struct that represents NG exclusion.
+struct CORE_EXPORT NGExclusion {
+  // Type of NG exclusion.
+  enum Type {
+    // Undefined exclusion type.
+    // At this moment it's also used to represent CSS3 exclusion.
+    kExclusionTypeUndefined = 0,
+    // Exclusion that is created by LEFT float.
+    kFloatLeft = 1,
+    // Exclusion that is created by RIGHT float.
+    kFloatRight = 2
+  };
+
+  // Rectangle in logical coordinates the represents this exclusion.
+  NGLogicalRect rect;
+
+  // Type of this exclusion.
+  Type type;
+
+  bool operator==(const NGExclusion& other) const;
+  String ToString() const;
+};
+
+CORE_EXPORT std::ostream& operator<<(std::ostream&, const NGExclusion&);
+
+struct CORE_EXPORT NGExclusions {
+  NGExclusions();
+  NGExclusions(const NGExclusions& other);
+
+  Vector<std::unique_ptr<const NGExclusion>> storage;
+
+  // Last left/right float exclusions are used to enforce the top edge alignment
+  // rule for floats and for the support of CSS "clear" property.
+  const NGExclusion* last_left_float;   // Owned by storage.
+  const NGExclusion* last_right_float;  // Owned by storage.
+
+  NGExclusions& operator=(const NGExclusions& other);
+
+  void Add(const NGExclusion& exclusion);
+};
+
+}  // namespace blink
+
+#endif  // NGExclusion_h