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

third_party/WebKit/Source/core/exported/WebViewImpl.h

 /*
  * Copyright (C) 2010 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 440 matching lines @@
 
   void UpdateBrowserControlsState(WebBrowserControlsState constraint,
                                   WebBrowserControlsState current,
                                   bool animate) override;
 
   BrowserControls& GetBrowserControls();
   // Called anytime browser controls layout height or content offset have
   // changed.
   void DidUpdateBrowserControls();
 
+  void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&);
+
   void ForceNextWebGLContextCreationToFail() override;
   void ForceNextDrawingBufferCreationToFail() override;
 
   IntSize MainFrameSize();
   WebDisplayMode DisplayMode() const { return display_mode_; }
 
   PageScaleConstraintsSet& GetPageScaleConstraintsSet() const;
 
   FloatSize ElasticOverscroll() const { return elastic_overscroll_; }
 
@@ skipping 248 matching lines @@
   static const WebInputEvent* current_input_event_;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 }  // namespace blink
 
 #endif