Implement CSS: scroll-boundary-behavior

cc/blink/web_layer_impl.cc

Index: cc/blink/web_layer_impl.cc
diff --git a/cc/blink/web_layer_impl.cc b/cc/blink/web_layer_impl.cc
index ff07c7c0b1fdd073f0fb9588bd2f7fdfdcdacdef..5479d27956606f989add8bfd922efdd5530580d7 100644
--- a/cc/blink/web_layer_impl.cc
+++ b/cc/blink/web_layer_impl.cc
@@ -38,6 +38,7 @@ using blink::WebVector;
 using blink::WebRect;
 using blink::WebSize;
 using blink::WebColor;
+using blink::WebScrollBoundaryBehavior;
 
 namespace cc_blink {
 
@@ -475,4 +476,10 @@ void WebLayerImpl::setHasWillChangeTransformHint(bool has_will_change) {
   layer_->SetHasWillChangeTransformHint(has_will_change);
 }
 
+void WebLayerImpl::setScrollBoundaryBehavior(
+    blink::WebScrollBoundaryBehavior behavior) {
+  layer_->SetScrollBoundaryBehavior(
+      static_cast<cc::ScrollBoundaryBehavior>(behavior));
+}
+
 }  // namespace cc_blink