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

third_party/WebKit/public/platform/WebLayerTreeView.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 15 matching lines @@
 #ifndef WebLayerTreeView_h
 #define WebLayerTreeView_h
 
 #include "WebBrowserControlsState.h"
 #include "WebColor.h"
 #include "WebCommon.h"
 #include "WebCompositorMutatorClient.h"
 #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"
 
 #include "third_party/skia/include/core/SkImage.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 
 namespace cc {
 class AnimationHost;
 }
@@ skipping 69 matching lines @@
 
   // Set browser controls height. If |shrink_viewport| is set to true, then
   // Blink shrunk the viewport clip layers by the top and bottom browser
   // controls height. Top controls will translate the web page down and do not
   // immediately scroll when hiding. The bottom controls scroll immediately and
   // never translate the content (only clip it).
   virtual void SetBrowserControlsHeight(float top_height,
                                         float bottom_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
   // dirty.
   virtual void SetNeedsBeginFrame() {}
 
   // Relays the end of a fling animation.
   virtual void DidStopFlinging() {}
 
   // Run layout and paint of all pending document changes asynchronously.
@@ skipping 70 matching lines @@
 
   virtual void RequestBeginMainFrameNotExpected(bool new_state) {}
 
   virtual void RequestDecode(const PaintImage& image,
                              const base::Callback<void(bool)>& callback) {}
 };
 
 }  // namespace blink
 
 #endif  // WebLayerTreeView_h