WIP: simplified display management in ash

ash/wm/system_gesture_event_filter.cc

Index: ash/wm/system_gesture_event_filter.cc
diff --git a/ash/wm/system_gesture_event_filter.cc b/ash/wm/system_gesture_event_filter.cc
index 9dcfd924b49bb8fc93a4952b22d05dd228852acb..962ad2bf500e61243166e69efca8f346046e5366 100644
--- a/ash/wm/system_gesture_event_filter.cc
+++ b/ash/wm/system_gesture_event_filter.cc
@@ -5,6 +5,7 @@
 #include "ash/wm/system_gesture_event_filter.h"
 
 #include "ash/metrics/user_metrics_recorder.h"
+#include "ash/public/cpp/config.h"
 #include "ash/shell.h"
 #include "ash/touch/touch_uma.h"
 #include "ash/wm/gestures/overview_gesture_handler.h"
@@ -20,7 +21,10 @@ SystemGestureEventFilter::SystemGestureEventFilter()
 SystemGestureEventFilter::~SystemGestureEventFilter() {}
 
 void SystemGestureEventFilter::OnMouseEvent(ui::MouseEvent* event) {
+  // ui::GetTouchScreensAvailability() uses InputDeviceManager, which is
+  // not created in mash. Figure out!
   if (event->type() == ui::ET_MOUSE_PRESSED &&
+      Shell::GetAshConfig() == Config::CLASSIC &&
       ui::GetTouchScreensAvailability() ==
           ui::TouchScreensAvailability::ENABLED) {
     Shell::Get()->metrics()->RecordUserMetricsAction(UMA_MOUSE_DOWN);