Postpone rail application for touch scrolling - chrome side.

ui/events/gesture_event_details.cc

 // Copyright 2014 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 "ui/events/gesture_event_details.h"
 
 namespace ui {
 
 GestureEventDetails::GestureEventDetails()
     : type_(ET_UNKNOWN), touch_points_(0), oldest_touch_id_(-1) {
 }
 
 GestureEventDetails::GestureEventDetails(ui::EventType type)
     : type_(type), touch_points_(1), oldest_touch_id_(-1) {
   DCHECK_GE(type, ET_GESTURE_TYPE_START);
   DCHECK_LE(type, ET_GESTURE_TYPE_END);
 }
 
 GestureEventDetails::GestureEventDetails(ui::EventType type,
                                          float delta_x,
+                                         float delta_y,
+                                         ScrollRailState scroll_rail_state)
+    : type_(type), touch_points_(1), oldest_touch_id_(-1) {
+  switch (type_) {
+    case ui::ET_GESTURE_SCROLL_UPDATE:
+      data_.scroll_update.x = delta_x;
+      data_.scroll_update.y = delta_y;
+      data_.scroll_update.scroll_rail_state = scroll_rail_state;
+      break;
+
+    case ui::ET_SCROLL_FLING_START:
+      data_.fling_start.x = delta_x;
+      data_.fling_start.y = delta_y;
+      data_.fling_start.scroll_rail_state = scroll_rail_state;
+      break;
+
+    default:
+      NOTREACHED() << "Invalid event type for constructor: " << type;
+  }
+}
+
+GestureEventDetails::GestureEventDetails(ui::EventType type,
+                                         float delta_x,
                                          float delta_y)
     : type_(type), touch_points_(1), oldest_touch_id_(-1) {
-  DCHECK_GE(type, ET_GESTURE_TYPE_START);
-  DCHECK_LE(type, ET_GESTURE_TYPE_END);
   switch (type_) {
     case ui::ET_GESTURE_SCROLL_BEGIN:
       data_.scroll_begin.x_hint = delta_x;
       data_.scroll_begin.y_hint = delta_y;
       break;
 
-    case ui::ET_GESTURE_SCROLL_UPDATE:
-      data_.scroll_update.x = delta_x;
-      data_.scroll_update.y = delta_y;
-      break;
-
-    case ui::ET_SCROLL_FLING_START:
-      data_.fling_velocity.x = delta_x;
-      data_.fling_velocity.y = delta_y;
-      break;
-
     case ui::ET_GESTURE_TWO_FINGER_TAP:
       data_.first_finger_enclosing_rectangle.width = delta_x;
       data_.first_finger_enclosing_rectangle.height = delta_y;
       break;
 
     case ui::ET_GESTURE_SWIPE:
       data_.swipe.left = delta_x < 0;
       data_.swipe.right = delta_x > 0;
       data_.swipe.up = delta_y < 0;
       data_.swipe.down = delta_y > 0;
@@ skipping 29 matching lines @@
     default:
       break;
   }
 }
 
 GestureEventDetails::Details::Details() {
   memset(this, 0, sizeof(Details));
 }
 
 }  // namespace ui