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

third_party/WebKit/Source/core/page/ChromeClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple, Inc. All rights
  * reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 27 matching lines @@
 #include "platform/graphics/TouchAction.h"
 #include "platform/heap/Handle.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/wtf/Forward.h"
 #include "platform/wtf/Optional.h"
 #include "platform/wtf/Vector.h"
 #include "public/platform/BlameContext.h"
 #include "public/platform/WebDragOperation.h"
 #include "public/platform/WebEventListenerProperties.h"
 #include "public/platform/WebFocusType.h"
+#include "public/platform/WebScrollBoundaryBehavior.h"
 
 // To avoid conflicts with the CreateWindow macro from the Windows SDK...
 #undef CreateWindow
 
 namespace blink {
 
 class AXObject;
 class ColorChooser;
 class ColorChooserClient;
 class CompositorWorkerProxyClient;
@@ skipping 78 matching lines @@
                              NavigationPolicy) = 0;
   virtual void Show(NavigationPolicy) = 0;
 
   // All the parameters should be in viewport space. That is, if an event
   // scrolls by 10 px, but due to a 2X page scale we apply a 5px scroll to the
   // root frame, all of which is handled as overscroll, we should return 10px
   // as the overscrollDelta.
   virtual void DidOverscroll(const FloatSize& overscroll_delta,
                              const FloatSize& accumulated_overscroll,
                              const FloatPoint& position_in_viewport,
-                             const FloatSize& velocity_in_viewport) = 0;
+                             const FloatSize& velocity_in_viewport,
+                             const WebScrollBoundaryBehavior&) = 0;
 
   virtual bool ShouldReportDetailedMessageForSource(LocalFrame&,
                                                     const String& source) = 0;
   virtual void AddMessageToConsole(LocalFrame*,
                                    MessageSource,
                                    MessageLevel,
                                    const String& message,
                                    unsigned line_number,
                                    const String& source_id,
                                    const String& stack_trace) = 0;
@@ skipping 160 matching lines @@
   virtual void ShowVirtualKeyboardOnElementFocus(LocalFrame&) {}
 
   virtual void RegisterViewportLayers() const {}
 
   virtual void ShowUnhandledTapUIIfNeeded(IntPoint, Node*, bool) {}
 
   virtual void OnMouseDown(Node&) {}
 
   virtual void DidUpdateBrowserControls() const {}
 
+  virtual void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&) {}
+
   virtual void RegisterPopupOpeningObserver(PopupOpeningObserver*) = 0;
   virtual void UnregisterPopupOpeningObserver(PopupOpeningObserver*) = 0;
   virtual void NotifyPopupOpeningObservers() const = 0;
 
   virtual CompositorWorkerProxyClient* CreateCompositorWorkerProxyClient(
       LocalFrame*) = 0;
   virtual AnimationWorkletProxyClient* CreateAnimationWorkletProxyClient(
       LocalFrame*) = 0;
 
   virtual FloatSize ElasticOverscroll() const { return FloatSize(); }
@@ skipping 55 matching lines @@
   WeakMember<Node> last_mouse_over_node_;
   LayoutPoint last_tool_tip_point_;
   String last_tool_tip_text_;
 
   FRIEND_TEST_ALL_PREFIXES(ChromeClientTest, SetToolTipFlood);
 };
 
 }  // namespace blink
 
 #endif  // ChromeClient_h