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

cc/input/scroll_state.h

Index: cc/input/scroll_state.h
diff --git a/cc/input/scroll_state.h b/cc/input/scroll_state.h
index eb0c7fa95beba6496a68547fb3d84c6076713c92..60ef35103f52157e155217acdeea9765fd22370b 100644
--- a/cc/input/scroll_state.h
+++ b/cc/input/scroll_state.h
@@ -97,6 +97,10 @@ class CC_EXPORT ScrollState {
   bool caused_scroll_x() const { return data_.caused_scroll_x; }
   bool caused_scroll_y() const { return data_.caused_scroll_y; }
 
+  void set_scroll_chain_cut(bool cut) { data_.is_scroll_chain_cut = cut; }

[dcheng, 2017/08/25 23:12:17]

Nit: for symmetry I would name this set_is_scroll_chain_cut (for example, see
line 63-64 in this file)

[sunyunjia, 2017/08/29 17:32:30]

Done.

+
+  bool is_scroll_chain_cut() const { return data_.is_scroll_chain_cut; }
+
   LayerTreeImpl* layer_tree_impl() { return layer_tree_impl_; }
   ScrollStateData* data() { return &data_; }