Use scroll-boundary-behavior to control overscroll-refresh/glow on android.

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..9d88b6534f7aae6f7424d2fc35ce9fa9519d7fba
--- /dev/null
+++ b/third_party/WebKit/public/platform/WebScrollBoundaryBehavior.h
@@ -0,0 +1,18 @@
+// 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"
+
+namespace blink {
+
+struct WebScrollBoundaryBehavior : public cc::ScrollBoundaryBehavior {
+  using ScrollBoundaryBehavior::ScrollBoundaryBehavior;

[majidvp, 2017/05/18 15:26:10]

I am confused by this using statement. 
First should this be cc::ScrollBoundaryBehavior,
Second is it trying to bring in the enum into the namespace? so
ScrollBoundaryBehaviorType?

[sunyunjia, 2017/05/19 20:14:23]

That was a way I found on stackoverflow to inherit the constructor, which is
really confusing. I've changed it to a normal approach.

+};
+
+}  // namespace blink
+
+#endif