diff -up chromium-58.0.3029.96/ui/events/devices/x11/device_data_manager_x11.cc.revert chromium-58.0.3029.96/ui/events/devices/x11/device_data_manager_x11.cc
--- chromium-58.0.3029.96/ui/events/devices/x11/device_data_manager_x11.cc.revert	2017-05-08 14:58:11.767482431 -0400
+++ chromium-58.0.3029.96/ui/events/devices/x11/device_data_manager_x11.cc	2017-05-08 14:58:37.722960109 -0400
@@ -790,15 +790,6 @@ void DeviceDataManagerX11::UpdateScrollC
   DCHECK(deviceid >= 0 && deviceid < kMaxDeviceNum);
   ScrollInfo& info = scroll_data_[deviceid];
 
-  bool legacy_scroll_available =
-      (scroll_class_info->flags & XIScrollFlagNoEmulation) == 0;
-  // If the device's highest resolution is lower than the resolution of xinput1
-  // then use xinput1's events instead (ie. don't configure smooth scrolling).
-  if (legacy_scroll_available &&
-      std::abs(scroll_class_info->increment) <= 1.0) {
-    return;
-  }
-
   switch (scroll_class_info->scroll_type) {
     case XIScrollTypeVertical:
       info.vertical.number = scroll_class_info->number;