mus: Disregard windows that explicitly set can_accept_events to be false when sending events.

services/ui/ws/window_finder.cc

Index: services/ui/ws/window_finder.cc
diff --git a/services/ui/ws/window_finder.cc b/services/ui/ws/window_finder.cc
index bbd87374b746a698122bdefe93aab6864a4e0606..6d1c46ba208d7993fb91ebfbe438921d2d29843f 100644
--- a/services/ui/ws/window_finder.cc
+++ b/services/ui/ws/window_finder.cc
@@ -31,6 +31,9 @@ ServerWindow* FindDeepestVisibleWindowForEvents(ServerWindow* window,
     if (!child->visible())
       continue;
 
+    if (!child->AcceptEvents())
+      continue;
+
     // TODO(sky): support transform.
     gfx::Point child_location(location->x() - child->bounds().x(),
                               location->y() - child->bounds().y());