CC Animations: Make LayerAnimationController creation optional

cc/blink/web_scrollbar_layer_impl.cc

 // Copyright 2014 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/blink/web_scrollbar_layer_impl.h"
 
 #include "cc/blink/scrollbar_impl.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/painted_scrollbar_layer.h"
@@ skipping 13 matching lines @@
 
 }  // namespace
 
 namespace cc_blink {
 
 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
     blink::WebScrollbar* scrollbar,
     blink::WebScrollbarThemePainter painter,
     blink::WebScrollbarThemeGeometry* geometry)
     : layer_(new WebLayerImpl(PaintedScrollbarLayer::Create(
+          WebLayerImpl::LayerSettings(),
           scoped_ptr<cc::Scrollbar>(
               new ScrollbarImpl(make_scoped_ptr(scrollbar),
                                 painter,
                                 make_scoped_ptr(geometry))).Pass(),
           0))) {
 }
 
 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
     blink::WebScrollbar::Orientation orientation,
     int thumb_thickness,
     int track_start,
     bool is_left_side_vertical_scrollbar)
     : layer_(new WebLayerImpl(
-          SolidColorScrollbarLayer::Create(ConvertOrientation(orientation),
+          SolidColorScrollbarLayer::Create(WebLayerImpl::LayerSettings(),
+                                           ConvertOrientation(orientation),
                                            thumb_thickness,
                                            track_start,
                                            is_left_side_vertical_scrollbar,
                                            0))) {
 }
 
 WebScrollbarLayerImpl::~WebScrollbarLayerImpl() {
 }
 
 blink::WebLayer* WebScrollbarLayerImpl::layer() {
   return layer_.get();
 }
 
 void WebScrollbarLayerImpl::setScrollLayer(blink::WebLayer* layer) {
   cc::Layer* scroll_layer =
       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
   layer_->layer()->ToScrollbarLayer()->SetScrollLayer(
       scroll_layer ? scroll_layer->id() : cc::Layer::INVALID_ID);
 }
 
 void WebScrollbarLayerImpl::setClipLayer(blink::WebLayer* layer) {
   cc::Layer* clip_layer =
       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
   layer_->layer()->ToScrollbarLayer()->SetClipLayer(
       clip_layer ? clip_layer->id() : cc::Layer::INVALID_ID);
 }
 
 }  // namespace cc_blink