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

cc/trees/layer_tree_impl.cc

 // 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.
 
 #include "cc/trees/layer_tree_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 400 matching lines @@
 
   target_tree->PassSwapPromises(std::move(swap_promise_list_));
   swap_promise_list_.clear();
 
   target_tree->set_browser_controls_shrink_blink_size(
       browser_controls_shrink_blink_size_);
   target_tree->set_top_controls_height(top_controls_height_);
   target_tree->set_bottom_controls_height(bottom_controls_height_);
   target_tree->PushBrowserControls(nullptr);
 
+  target_tree->set_scroll_boundary_behavior(scroll_boundary_behavior_);
+
   // The page scale factor update can affect scrolling which requires that
   // these ids are set, so this must be before PushPageScaleFactorAndLimits.
   target_tree->SetViewportLayersFromIds(
       overscroll_elasticity_layer_id_, page_scale_layer_id_,
       inner_viewport_scroll_layer_id_, outer_viewport_scroll_layer_id_);
 
   // Active tree already shares the page_scale_factor object with pending
   // tree so only the limits need to be provided.
   target_tree->PushPageScaleFactorAndLimits(nullptr, min_page_scale_factor(),
                                             max_page_scale_factor());
@@ skipping 413 matching lines @@
 
 void LayerTreeImpl::set_bottom_controls_height(float bottom_controls_height) {
   if (bottom_controls_height_ == bottom_controls_height)
     return;
 
   bottom_controls_height_ = bottom_controls_height;
   if (IsActiveTree())
     layer_tree_host_impl_->UpdateViewportContainerSizes();
 }
 
+void LayerTreeImpl::set_scroll_boundary_behavior(
+    ScrollBoundaryBehavior behavior) {
+  scroll_boundary_behavior_ = behavior;
+}
+
 bool LayerTreeImpl::ClampBrowserControlsShownRatio() {
   float ratio = top_controls_shown_ratio_->Current(true);
   ratio = std::max(ratio, 0.f);
   ratio = std::min(ratio, 1.f);
   return top_controls_shown_ratio_->SetCurrent(ratio);
 }
 
 bool LayerTreeImpl::SetCurrentBrowserControlsShownRatio(float ratio) {
   bool changed = top_controls_shown_ratio_->SetCurrent(ratio);
   changed |= ClampBrowserControlsShownRatio();
@@ skipping 1241 matching lines @@
 
 void LayerTreeImpl::ResetAllChangeTracking() {
   layers_that_should_push_properties_.clear();
   // Iterate over all layers, including masks.
   for (auto& layer : *layers_)
     layer->ResetChangeTracking();
   property_trees_.ResetAllChangeTracking();
 }
 
 }  // namespace cc