chromeos: Move files in //ash/common to //ash, part 1

ash/system/overview/overview_button_tray_unittest.cc

Index: ash/system/overview/overview_button_tray_unittest.cc
diff --git a/ash/system/overview/overview_button_tray_unittest.cc b/ash/system/overview/overview_button_tray_unittest.cc
index 9aaf224c8e4d92a6a86d647b665789fa842d957c..346a6aa7976b447ecd2289025f4b138148e21365 100644
--- a/ash/system/overview/overview_button_tray_unittest.cc
+++ b/ash/system/overview/overview_button_tray_unittest.cc
@@ -2,10 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/common/system/overview/overview_button_tray.h"
+#include "ash/system/overview/overview_button_tray.h"
 
 #include "ash/common/login_status.h"
-#include "ash/common/system/status_area_widget.h"
 #include "ash/common/test/test_session_state_delegate.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm/overview/window_selector_controller.h"
@@ -13,6 +12,7 @@
 #include "ash/public/cpp/shelf_types.h"
 #include "ash/root_window_controller.h"
 #include "ash/rotator/screen_rotation_animator.h"
+#include "ash/system/status_area_widget.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/ash_test_helper.h"
 #include "ash/test/status_area_widget_test_helper.h"