Use remembered mouse button state when simulating a mouse move in Ozone.

ui/aura/test/ui_controls_factory_ozone.cc

Index: ui/aura/test/ui_controls_factory_ozone.cc
diff --git a/ui/aura/test/ui_controls_factory_ozone.cc b/ui/aura/test/ui_controls_factory_ozone.cc
index fb839838fe1d374da726473fb61571f6bd24d18d..30f6bae8db0386384fb250cae1191f935a48c356 100644
--- a/ui/aura/test/ui_controls_factory_ozone.cc
+++ b/ui/aura/test/ui_controls_factory_ozone.cc
@@ -116,7 +116,7 @@ class UIControlsOzone : public ui_controls::UIControlsAura {
     else
       event_type = ui::ET_MOUSE_MOVED;
 
-    PostMouseEvent(event_type, host_location, 0, 0);
+    PostMouseEvent(event_type, host_location, button_down_mask_, 0);
 
     RunClosureAfterAllPendingUIEvents(closure);
     return true;