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

cc/trees/layer_tree_host.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_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 41 matching lines @@
 class Layer;
 class LayerTreeHostClient;
 class LayerTreeHostImpl;
 class LayerTreeHostImplClient;
 class LayerTreeHostSingleThreadClient;
 class LayerTreeMutator;
 class MutatorEvents;
 class MutatorHost;
 struct PendingPageScaleAnimation;
 class RenderingStatsInstrumentation;
+struct ScrollBoundaryBehavior;
 class TaskGraphRunner;
 class UIResourceManager;
 struct RenderingStats;
 struct ScrollAndScaleSet;
 
 class CC_EXPORT LayerTreeHost : public NON_EXPORTED_BASE(SurfaceReferenceOwner),
                                 public NON_EXPORTED_BASE(MutatorHostClient) {
  public:
   // TODO(sad): InitParams should be a movable type so that it can be
   // std::move()d to the Create* functions.
@@ skipping 200 matching lines @@
       EventListenerClass event_class) const {
     return event_listener_properties_[static_cast<size_t>(event_class)];
   }
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
   gfx::Size device_viewport_size() const { return device_viewport_size_; }
 
   void SetBrowserControlsHeight(float height, bool shrink);
   void SetBrowserControlsShownRatio(float ratio);
   void SetBottomControlsHeight(float height);
+  void SetScrollBoundaryBehavior(
+      ScrollBoundaryBehavior scroll_boundary_behavior);
 
   void SetPageScaleFactorAndLimits(float page_scale_factor,
                                    float min_page_scale_factor,
                                    float max_page_scale_factor);
   float page_scale_factor() const { return page_scale_factor_; }
   float min_page_scale_factor() const { return min_page_scale_factor_; }
   float max_page_scale_factor() const { return max_page_scale_factor_; }
 
   void set_background_color(SkColor color) { background_color_ = color; }
   SkColor background_color() const { return background_color_; }
@@ skipping 270 matching lines @@
   scoped_refptr<Layer> root_layer_;
 
   scoped_refptr<Layer> overscroll_elasticity_layer_;
   scoped_refptr<Layer> page_scale_layer_;
   scoped_refptr<Layer> inner_viewport_scroll_layer_;
   scoped_refptr<Layer> outer_viewport_scroll_layer_;
 
   float top_controls_height_ = 0.f;
   float top_controls_shown_ratio_ = 0.f;
   bool browser_controls_shrink_blink_size_ = false;
+  ScrollBoundaryBehavior scroll_boundary_behavior_;
 
   float bottom_controls_height_ = 0.f;
 
   float device_scale_factor_ = 1.f;
   float painted_device_scale_factor_ = 1.f;
   float page_scale_factor_ = 1.f;
   float min_page_scale_factor_ = 1.f;
   float max_page_scale_factor_ = 1.f;
   gfx::ColorSpace raster_color_space_;
 
@@ skipping 44 matching lines @@
       queued_image_decodes_;
 
   bool did_navigate_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_