Remove indirection: setup scrollbar scroll layers in the scrollbar constructor

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 367265b73ddcc5698db54cb1171979c80fd23e13..d50862b8e395b30a3eaa2a3ca9bd325daab42681 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -3824,12 +3824,6 @@ void WebViewImpl::registerViewportLayersWithCompositor() {
                                 : nullptr;
 
   VisualViewport& visualViewport = page()->frameHost().visualViewport();
-
-  // TODO(bokan): This was moved here from when registerViewportLayers was a
-  // part of VisualViewport and maybe doesn't belong here. See comment inside
-  // the mehtod.
-  visualViewport.setScrollLayerOnScrollbars(layoutViewportWebLayer);
-
   m_layerTreeView->registerViewportLayers(
       visualViewport.overscrollElasticityLayer()->platformLayer(),
       visualViewport.pageScaleLayer()->platformLayer(),