Note scrollbar layer properties changed when position changes.

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 "base/debug/trace_event.h"
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/debug/traced_value.h"
@@ skipping 241 matching lines @@
   DCHECK(IsActiveTree());
 
   gfx::RectF scrollable_viewport(
       gfx::PointAtOffsetFromOrigin(root_scroll->TotalScrollOffset()),
       ScrollableViewportSize());
   float vertical_adjust = 0.0f;
   if (RootContainerLayer())
     vertical_adjust = layer_tree_host_impl_->VisibleViewportSize().height() -
                       RootContainerLayer()->bounds().height();
   if (ScrollbarLayerImpl* horiz = root_scroll->horizontal_scrollbar_layer()) {
-    horiz->set_vertical_adjust(vertical_adjust);
-    horiz->set_visible_to_total_length_ratio(
+    horiz->SetVerticalAdjust(vertical_adjust);
+    horiz->SetVisibleToTotalLengthRatio(
         scrollable_viewport.width() / ScrollableSize().width());
   }
   if (ScrollbarLayerImpl* vertical = root_scroll->vertical_scrollbar_layer()) {
-    vertical->set_vertical_adjust(vertical_adjust);
-    vertical->set_visible_to_total_length_ratio(
+    vertical->SetVerticalAdjust(vertical_adjust);
+    vertical->SetVisibleToTotalLengthRatio(
         scrollable_viewport.height() / ScrollableSize().height());
   }
 }
 
 void LayerTreeImpl::UpdateDrawProperties() {
   if (IsActiveTree() && RootScrollLayer() && RootContainerLayer())
     UpdateRootScrollLayerSizeDelta();
 
   if (settings().solid_color_scrollbars &&
       IsActiveTree() &&
@@ skipping 352 matching lines @@
 const std::vector<LayerImpl*> LayerTreeImpl::LayersWithCopyOutputRequest()
     const {
   // Only the active tree needs to know about layers with copy requests, as
   // they are aborted if not serviced during draw.
   DCHECK(IsActiveTree());
 
   return layers_with_copy_output_request_;
 }
 
 }  // namespace cc