cc: Move SyncedScrollOffset to scroll tree

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 300 matching lines @@
         inner_scroll->bounds_delta());
 }
 
 void LayerTreeImpl::PushPropertiesTo(LayerTreeImpl* target_tree) {
   // The request queue should have been processed and does not require a push.
   DCHECK_EQ(ui_resource_request_queue_.size(), 0u);
 
   LayerImpl* layer = target_tree->CurrentlyScrollingLayer();
   target_tree->SetPropertyTrees(property_trees_);
   target_tree->SetCurrentlyScrollingLayer(layer);
+  target_tree->UpdatePropertyTreeScrollOffset(&property_trees_);
 
   if (next_activation_forces_redraw_) {
     target_tree->ForceRedrawNextActivation();
     next_activation_forces_redraw_ = false;
   }
 
   target_tree->PassSwapPromises(&swap_promise_list_);
 
   target_tree->set_top_controls_shrink_blink_size(
       top_controls_shrink_blink_size_);
@@ skipping 330 matching lines @@
 void LayerTreeImpl::ApplySentScrollAndScaleDeltasFromAbortedCommit() {
   DCHECK(IsActiveTree());
 
   page_scale_factor()->AbortCommit();
   top_controls_shown_ratio()->AbortCommit();
   elastic_overscroll()->AbortCommit();
 
   if (!root_layer())
     return;
 
-  LayerTreeHostCommon::CallFunctionForSubtree(
-      root_layer(), [](LayerImpl* layer) {
-        layer->ApplySentScrollDeltasFromAbortedCommit();
-      });
+  property_trees()->scroll_tree.ApplySentScrollDeltasFromAbortedCommit();
 }
 
 void LayerTreeImpl::SetViewportLayersFromIds(
     int overscroll_elasticity_layer_id,
     int page_scale_layer_id,
     int inner_viewport_scroll_layer_id,
     int outer_viewport_scroll_layer_id) {
   overscroll_elasticity_layer_id_ = overscroll_elasticity_layer_id;
   page_scale_layer_id_ = page_scale_layer_id;
   inner_viewport_scroll_layer_id_ = inner_viewport_scroll_layer_id;
@@ skipping 1351 matching lines @@
                                                    const gfx::BoxF& box,
                                                    gfx::BoxF* bounds) const {
   *bounds = gfx::BoxF();
   return layer_tree_host_impl_->animation_host()
              ? layer_tree_host_impl_->animation_host()
                    ->TransformAnimationBoundsForBox(layer->id(), box, bounds)
              : true;
 }
 
 }  // namespace cc