https://codereview.chromium.org/2264503003/diff/1/components/exo/pointer.cc#newcode133

In this CL, the views::Widget for cursor spirit is created with accept_events = false, but it can still get mouse event sometimes.

What sort of events do you receive? Enter/Exit? Or other types too?

Looks like, the ui::Window is created for views::Widget first, and then it will be initialized with InitParams. So the mouse events could be queued in mojo message pipe before views::Widget initialization.

All ET_MOUSE_* events have been observed.

re #4: can you clarify why events are queued before the ui::Window is made visible?

https://cs.chromium.org/chromium/src/ui/views/mus/native_widget_mus.cc?rcl=0&l=716

From the code, the ui::Window could be visible before NativeWidgetMus::InitNativeWidget being called. In that case, the mouse events will be queued in MessagePipe, right? 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d62216cfe1b73e2fa7c5384b3d8fb1dc03f794bb

commit d62216cfe1b73e2fa7c5384b3d8fb1dc03f794bb
Author: penghuang <penghuang@chromium.org>
Date: Thu Aug 25 22:44:00 2016

ui/views: Pass InitParams::accept_events to NativeWidgetMus::content_

BUG= 639861 

Review-Url: https://codereview.chromium.org/2272753002
Cr-Commit-Position: refs/heads/master@{#414565}

[modify] https://crrev.com/d62216cfe1b73e2fa7c5384b3d8fb1dc03f794bb/ui/views/mus/native_widget_mus.cc