Paint collapsed borders of a table as one display item

third_party/WebKit/Source/core/paint/PaintResult.h

+// 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 PaintResult_h
+#define PaintResult_h
+
+namespace blink {
+
+// Used as the return type of some paint methods.
+enum PaintResult {
+  // The layer/object is fully painted. This includes cases that nothing needs
+  // painting regardless of the paint rect.
+  FullyPainted,
+  // Some part of the layer/object is out of the paint rect and may be not fully
+  // painted.  The results cannot be cached because they may change when paint
+  // rect changes.
+  MayBeClippedByPaintDirtyRect,
+
+  MaxPaintResult = MayBeClippedByPaintDirtyRect,
+};
+
+}  // namespace blink
+
+#endif  // PaintResult.h