[not for review - epic CL] Adding Elastic+Momentum+Layered scrolling to views::ScrollView

ui/events/event_utils.h

Index: ui/events/event_utils.h
diff --git a/ui/events/event_utils.h b/ui/events/event_utils.h
index 183bf1be4b1a02e7e3d4ab1fdb352a2eb4f97931..1cbd2ff796913431cb397aa02a3d4dbfd4d25784 100644
--- a/ui/events/event_utils.h
+++ b/ui/events/event_utils.h
@@ -146,7 +146,8 @@ EVENTS_EXPORT bool GetScrollOffsets(const base::NativeEvent& native_event,
                                     float* y_offset,
                                     float* x_offset_ordinal,
                                     float* y_offset_ordinal,
-                                    int* finger_count);
+                                    int* finger_count,
+                                    int* momentum_phase);
 
 // Returns whether natural scrolling should be used for touchpad.
 EVENTS_EXPORT bool ShouldDefaultToNaturalScroll();