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

third_party/WebKit/public/platform/WebLayerTreeView.h

Index: third_party/WebKit/public/platform/WebLayerTreeView.h
diff --git a/third_party/WebKit/public/platform/WebLayerTreeView.h b/third_party/WebKit/public/platform/WebLayerTreeView.h
index 824ec242ddb19b9c661c4dbfaf02144b5ac6bbeb..9cf3e129e624add7c28805bd13083a0d49a4870d 100644
--- a/third_party/WebKit/public/platform/WebLayerTreeView.h
+++ b/third_party/WebKit/public/platform/WebLayerTreeView.h
@@ -33,6 +33,7 @@
 #include "WebEventListenerProperties.h"
 #include "WebFloatPoint.h"
 #include "WebImageLayer.h"
+#include "WebScrollBoundaryBehavior.h"
 #include "WebSize.h"
 #include "base/callback.h"
 #include "components/viz/common/surfaces/frame_sink_id.h"
@@ -117,6 +118,10 @@ class WebLayerTreeView {
   // shrunk the viewport clip layers by the browser controls height.
   virtual void SetBrowserControlsHeight(float height, bool shrink_viewport) {}
 
+  // Set the browser's behavior when overscroll happens, e.g. whether to glow
+  // or navigate.
+  virtual void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&) {}
+
   // Flow control and scheduling ---------------------------------------
 
   // Indicates that blink needs a BeginFrame, but that nothing might actually be