Implement CSS: scroll-boundary-behavior

cc/blink/web_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_layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 20 matching lines @@
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/geometry/vector2d_conversions.h"
 
 using cc::Layer;
 using blink::WebLayer;
 using blink::WebFloatPoint;
 using blink::WebVector;
 using blink::WebRect;
 using blink::WebSize;
 using blink::WebColor;
+using blink::WebScrollBoundaryBehavior;
 
 namespace cc_blink {
 
 WebLayerImpl::WebLayerImpl()
     : layer_(Layer::Create()), contents_opaque_is_fixed_(false) {}
 
 WebLayerImpl::WebLayerImpl(scoped_refptr<Layer> layer)
     : layer_(layer), contents_opaque_is_fixed_(false) {
 }
 
@@ skipping 432 matching lines @@
 }
 
 void WebLayerImpl::SetHasWillChangeTransformHint(bool has_will_change) {
   layer_->SetHasWillChangeTransformHint(has_will_change);
 }
 
 void WebLayerImpl::ShowScrollbars() {
   layer_->ShowScrollbars();
 }
 
+void WebLayerImpl::SetScrollBoundaryBehavior(
+    blink::WebScrollBoundaryBehavior behavior) {
+  layer_->SetScrollBoundaryBehavior(
+      static_cast<cc::ScrollBoundaryBehavior>(behavior));
+}
+
 }  // namespace cc_blink