Implement CSS: scroll-boundary-behavior

third_party/WebKit/public/platform/WebLayer.h

Index: third_party/WebKit/public/platform/WebLayer.h
diff --git a/third_party/WebKit/public/platform/WebLayer.h b/third_party/WebKit/public/platform/WebLayer.h
index 07ef4a6baed51ed0044ea32455db396aaf92c23d..5aa09e8483f33837636ea1923450185990a77e13 100644
--- a/third_party/WebKit/public/platform/WebLayer.h
+++ b/third_party/WebKit/public/platform/WebLayer.h
@@ -36,6 +36,7 @@
 #include "WebFloatSize.h"
 #include "WebPoint.h"
 #include "WebRect.h"
+#include "WebScrollBoundaryBehavior.h"
 #include "WebSize.h"
 #include "WebString.h"
 #include "WebTouchInfo.h"
@@ -212,6 +213,12 @@ class WebLayer {
   // deleting the scroll client.
   virtual void SetScrollClient(WebLayerScrollClient*) = 0;
 
+  // The scroll-boundary-behavior allows developers to specify whether the
+  // scroll should be propagated to its ancestors at the beginning of the
+  // scroll, and whether the overscroll should cause UI affordance such as
+  // glow/bounce etc.
+  virtual void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&) = 0;
+
   // Sets the cc-side layer client.
   virtual void SetLayerClient(cc::LayerClient*) = 0;