Move //mojo/services/X/public/... to //mojo/services/X/... (part 1).

mojo/services/device_info/interfaces/device_info.mojom

 // 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.
 
 [DartPackage="mojo_services"]
 module mojo;
 
 // A service to expose device specific information.
 // All operations are stateless.
 interface DeviceInfo {
   // The device type this service is running on. It can be a function of things
   // like whether there's an attached screen and its size, etc.
   enum DeviceType {
     UNKNOWN,
     HEADLESS,  // No attached display. Useful in tests.
     WATCH,  // Display smaller than 3.5".
     PHONE,  // Display smaller than 6.5" and larger than 3.5".
     TABLET,  // Display smaller than 10.5" and larger than 6.5".
 
     // Anything with a display larger than 10.5" with an attached keyboard.
     DESKTOP,
 
     // Anything with a display larger than 10.5" without an attached keyboard.
     TV,
   };
   GetDeviceType() => (DeviceType device_type);
 };