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

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.#ifndef WebViewBase_h
 
 #ifndef WebViewBase_h
 #define WebViewBase_h
 
 #include "core/page/EventWithHitTestResults.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "platform/wtf/RefCounted.h"
@@ skipping 21 matching lines @@
 class PagePopup;
 class PagePopupClient;
 class PageScaleConstraintsSet;
 class WebInputEvent;
 class WebInputMethodController;
 class WebKeyboardEvent;
 class WebLayer;
 class WebLocalFrameBase;
 class WebLayerTreeView;
 class WebPagePopupImpl;
+struct WebScrollBoundaryBehavior;
 class WebSettingsImpl;
 struct WebRect;
 
 // WebViewBase is a temporary class introduced to decouple the defintion of
 // WebViewImpl from the concrete implementation. It was not possible to move the
 // defintion of these methods to WebView as we did not want to pollute the
 // public API surface area.
 //
 // Once WebViewImpl is moved from web to core/exported then this class should be
 // removed and clients can once again depend on WebViewImpl.
 class WebViewBase : public WebView, public RefCounted<WebViewBase> {
  public:
   virtual ~WebViewBase() {}
 
   virtual void SetBaseBackgroundColor(WebColor) = 0;
   virtual void SetBaseBackgroundColorOverride(WebColor) = 0;
   virtual void ClearBaseBackgroundColorOverride() = 0;
   virtual void SetBackgroundColorOverride(WebColor) = 0;
   virtual void ClearBackgroundColorOverride() = 0;
   virtual void SetZoomFactorOverride(float) = 0;
   virtual void SetCompositorDeviceScaleFactorOverride(float) = 0;
   virtual void SetDeviceEmulationTransform(const TransformationMatrix&) = 0;
   virtual void SetShowDebugBorders(bool) = 0;
+  virtual void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&) = 0;
 
   virtual Page* GetPage() const = 0;
   virtual Frame* FocusedCoreFrame() const = 0;
 
   static HashSet<WebViewBase*>& AllInstances();
 
   // Returns the main frame associated with this view. This may be null when
   // the page is shutting down, but will be valid at all other times.
   virtual WebLocalFrameBase* MainFrameImpl() const = 0;
 
@@ skipping 146 matching lines @@
       const GestureEventWithHitTestResults& targeted_tap_event) = 0;
   virtual void EnableTapHighlightAtPoint(
       const GestureEventWithHitTestResults& targeted_tap_event) = 0;
   virtual LinkHighlightImpl* GetLinkHighlight(int) = 0;
   virtual unsigned NumLinkHighlights() = 0;
   virtual void EnableTapHighlights(HeapVector<Member<Node>>&) = 0;
 };
 }
 
 #endif