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

third_party/WebKit/Source/core/page/scrolling/OverscrollController.h

 // Copyright 2016 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 OverscrollController_h
 #define OverscrollController_h
 
 #include "platform/geometry/FloatSize.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebScrollBoundaryBehavior.h"
 
 namespace blink {
 
 class ChromeClient;
 class FloatPoint;
 struct ScrollResult;
 class VisualViewport;
 
 // Handles overscroll logic that occurs when the user scolls past the end of the
 // document's scroll extents. Currently, this applies only to document scrolling
@@ skipping 11 matching lines @@
 
   // Reports unused scroll as overscroll to the content layer. The position
   // argument is the most recent location of the gesture, the finger position
   // for touch scrolling and the cursor position for wheel. Velocity is used
   // in the case of a fling gesture where we want the overscroll to feel like
   // it has momentum.
   void HandleOverscroll(const ScrollResult&,
                         const FloatPoint& position_in_root_frame,
                         const FloatSize& velocity_in_root_frame);
 
+  void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&);
+
   DECLARE_TRACE();
 
  private:
   OverscrollController(const VisualViewport&, ChromeClient&);
 
   WeakMember<const VisualViewport> visual_viewport_;
   WeakMember<ChromeClient> chrome_client_;
 
   FloatSize accumulated_root_overscroll_;
+
+  WebScrollBoundaryBehavior scroll_boundary_behavior_;
 };
 
 }  // namespace blink
 
 #endif  // OverscrollController_h