Add a bit to not bubble scrolls to parent scrolling layers

webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc

Index: webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc
diff --git a/webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc b/webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc
index 3f23d71172cd36631e2fde5d9a2862004c1ef036..68b3696ef388da1698849080b45e0cd3bdc05be3 100644
--- a/webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc
+++ b/webkit/compositor_bindings/web_to_ccinput_handler_adapter.cc
@@ -49,7 +49,12 @@ public:
 
     virtual bool scrollByIfPossible(WebPoint point, WebSize offset) OVERRIDE
     {
-      return m_client->scrollBy(point, offset);
+      return m_client->scrollBy(point, offset, true);
+    }
+
+    virtual bool scrollByIfPossible(WebPoint point, WebSize offset, bool shouldBubble) OVERRIDE
+    {
+      return m_client->scrollBy(point, offset, shouldBubble);
     }
 
     virtual void scrollEnd() OVERRIDE