Implement CSS: scroll-boundary-behavior

third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h

Index: third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h
diff --git a/third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h b/third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h
new file mode 100644
index 0000000000000000000000000000000000000000..0954d3b8a50cd5571b63d1e42a9cbd48b65d4c71
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+++ b/third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h
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+// Copyright 2017 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 WebScrollBoundaryBehavior_h
+#define WebScrollBoundaryBehavior_h
+
+#include "cc/input/scroll_boundary_behavior.h"
+
+using cc::ScrollBoundaryBehavior;
+
+namespace blink {
+
+// The scroll-boundary-behavior allows developers to specify whether the
+// scroll should be propagated to its ancestors at the beginning of the scroll,
+// and whether the overscroll should cause UI affordance such as glow/bounce
+// etc. See cc/input/scroll_boundary_behavior.h for detailed value description.
+struct WebScrollBoundaryBehavior : public ScrollBoundaryBehavior {
+  using ScrollBoundaryBehaviorType =
+      ScrollBoundaryBehavior::ScrollBoundaryBehaviorType;
+  WebScrollBoundaryBehavior() : ScrollBoundaryBehavior() {}
+  WebScrollBoundaryBehavior(ScrollBoundaryBehaviorType type)
+      : ScrollBoundaryBehavior(type) {}
+  WebScrollBoundaryBehavior(ScrollBoundaryBehaviorType x_type,
+                            ScrollBoundaryBehaviorType y_type)
+      : ScrollBoundaryBehavior(x_type, y_type) {}
+};
+
+}  // namespace blink
+
+#endif