mash: Move tray settings and deps to common.

ash/system/chromeos/devicetype_utils.h

Index: ash/system/chromeos/devicetype_utils.h
diff --git a/ash/system/chromeos/devicetype_utils.h b/ash/system/chromeos/devicetype_utils.h
deleted file mode 100644
index bcdc04f3b7f5ef2582e350fca3a98b7e50a8ac95..0000000000000000000000000000000000000000
--- a/ash/system/chromeos/devicetype_utils.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef ASH_SYSTEM_CHROMEOS_DEVICETYPE_UTILS_H_
-#define ASH_SYSTEM_CHROMEOS_DEVICETYPE_UTILS_H_
-
-#include "ash/ash_export.h"
-#include "base/strings/string16.h"
-
-namespace ash {
-
-// Assuming the given localization resources takes a device type parameter, this
-// will substitute the appropriate device in (e.g. Chromebook, Chromebox).
-ASH_EXPORT base::string16 SubstituteChromeOSDeviceType(int resource_id);
-
-// Returns the name of the Chrome device type (e.g. Chromebook, Chromebox).
-ASH_EXPORT base::string16 GetChromeOSDeviceName();
-
-// Returns the resource ID for the current Chrome device type (e.g. Chromebook,
-// Chromebox).
-ASH_EXPORT int GetChromeOSDeviceTypeResourceId();
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_CHROMEOS_DEVICETYPE_UTILS_H_