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

ui/events/win/events_win.cc

 // 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.
 
 #include <stdint.h>
 #include <windowsx.h>
 
 #include "ui/events/event_constants.h"
 
 #include "base/logging.h"
@@ skipping 331 matching lines @@
                         /* force */ 0.f,
                         /* tilt_x */ 0.f,
                         /* tilt_y */ 0.f);
 }
 
 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) {
   // TODO(ananta)
   // Support retrieving the scroll offsets from the scroll event.
   if (native_event.message == WM_VSCROLL || native_event.message == WM_HSCROLL)
     return true;
   return false;
 }
 
 bool GetFlingData(const base::NativeEvent& native_event,
                   float* vx,
                   float* vy,
@@ skipping 51 matching lines @@
 }
 
 LPARAM GetLParamFromScanCode(uint16_t scan_code) {
   LPARAM l_param = static_cast<LPARAM>(scan_code & 0x00FF) << 16;
   if ((scan_code & 0xE000) == 0xE000)
     l_param |= (1 << 24);
   return l_param;
 }
 
 }  // namespace ui