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

cc/input/input_handler.h

 // Copyright 2011 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 CC_INPUT_INPUT_HANDLER_H_
 #define CC_INPUT_INPUT_HANDLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "cc/cc_export.h"
 #include "cc/input/event_listener_properties.h"
 #include "cc/input/main_thread_scrolling_reason.h"
+#include "cc/input/scroll_boundary_behavior.h"
 #include "cc/input/scroll_state.h"
 #include "cc/input/scrollbar.h"
 #include "cc/input/touch_action.h"
 #include "cc/trees/swap_promise_monitor.h"
 
 namespace gfx {
 class Point;
 class ScrollOffset;
 class SizeF;
 class Vector2dF;
@@ skipping 13 matching lines @@
   bool did_scroll;
   // Was any of the scroll delta argument to this ScrollBy call not used?
   bool did_overscroll_root;
   // The total overscroll that has been accumulated by all ScrollBy calls that
   // have had overscroll since the last ScrollBegin call. This resets upon a
   // ScrollBy with no overscroll.
   gfx::Vector2dF accumulated_root_overscroll;
   // The amount of the scroll delta argument to this ScrollBy call that was not
   // used for scrolling.
   gfx::Vector2dF unused_scroll_delta;
+  // How the browser should handle the overscroll navigation based on the css
+  // property scroll-boundary-behavior.
+  ScrollBoundaryBehavior scroll_boundary_behavior;
 };
 
 class CC_EXPORT InputHandlerClient {
  public:
   virtual ~InputHandlerClient() {}
 
   virtual void WillShutdown() = 0;
   virtual void Animate(base::TimeTicks time) = 0;
   virtual void MainThreadHasStoppedFlinging() = 0;
   virtual void ReconcileElasticOverscrollAndRootScroll() = 0;
@@ skipping 173 matching lines @@
   InputHandler() {}
   virtual ~InputHandler() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InputHandler);
 };
 
 }  // namespace cc
 
 #endif  // CC_INPUT_INPUT_HANDLER_H_