MacViews: Send Mac scrollWheel NSEvents as ui::ET_SCROLL (ui::ScrollEvent).

ui/events/event_utils.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_EVENTS_EVENT_UTILS_H_
 #define UI_EVENTS_EVENT_UTILS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 128 matching lines @@
                                 float* vy_ordinal,
                                 bool* is_cancel);
 
 // Returns whether this is a scroll event and optionally gets the amount to be
 // scrolled. |x_offset|, |y_offset| and |finger_count| can be NULL.
 EVENTS_EXPORT bool GetScrollOffsets(const base::NativeEvent& native_event,
                                     float* x_offset,
                                     float* y_offset,
                                     float* x_offset_ordinal,
                                     float* y_offset_ordinal,
-                                    int* finger_count);
+                                    int* finger_count,
+                                    EventMomentumPhase* momentum_phase);
 
 // Returns whether natural scrolling should be used for touchpad.
 EVENTS_EXPORT bool ShouldDefaultToNaturalScroll();
 
 // Returns whether or not the internal display produces touch events.
 EVENTS_EXPORT display::Display::TouchSupport GetInternalDisplayTouchSupport();
 
 EVENTS_EXPORT void ComputeEventLatencyOS(const base::NativeEvent& native_event);
 
 #if defined(OS_WIN)
@@ skipping 16 matching lines @@
 // Update the native X11 event to correspond to the new button flags.
 EVENTS_EXPORT void UpdateX11EventForChangedButtonFlags(MouseEvent* event);
 #endif
 
 // Registers a custom event type.
 EVENTS_EXPORT int RegisterCustomEventType();
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_UTILS_H_