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

ash/system/brightness/tray_brightness_unittest.cc

Index: ash/system/brightness/tray_brightness_unittest.cc
diff --git a/ash/common/system/chromeos/brightness/tray_brightness_unittest.cc b/ash/system/brightness/tray_brightness_unittest.cc
similarity index 95%
rename from ash/common/system/chromeos/brightness/tray_brightness_unittest.cc
rename to ash/system/brightness/tray_brightness_unittest.cc
index edc7ac0928f0963dcb47b6cad162d0fbd3dd4be1..62e5a1048e120e2128e4053b021353a63cb81d1f 100644
--- a/ash/common/system/chromeos/brightness/tray_brightness_unittest.cc
+++ b/ash/system/brightness/tray_brightness_unittest.cc
@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/common/system/chromeos/brightness/tray_brightness.h"
+#include "ash/system/brightness/tray_brightness.h"
 
 #include <memory>
 
 #include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/system/tray/system_tray_delegate.h"
-#include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/test/ash_test.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm_shell.h"
+#include "ash/system/tray/system_tray_delegate.h"
+#include "ash/system/tray/system_tray_item.h"
 #include "ui/views/view.h"
 
 namespace ash {