Remove //device/devices_app.

device/devices_app/public/cpp/devices_app_factory.h

-// 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 DEVICE_DEVICES_APP_PUBLIC_CPP_DEVICES_APP_FACTORY_H_
-#define DEVICE_DEVICES_APP_PUBLIC_CPP_DEVICES_APP_FACTORY_H_
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace mojo {
-class ShellClient;
-}
-
-namespace device {
-
-// Public factory for creating new instances of the devices app.
-class DevicesAppFactory {
- public:
-  // Creates a DevicesApp delegate which can be used to launch a new instance
-  // of the devices app on a mojo application runner. The caller owns the
-  // delegate.
-  static scoped_ptr<mojo::ShellClient> CreateApp();
-};
-
-}  // namespace device
-
-#endif  // DEVICE_DEVICES_APP_PUBLIC_CPP_DEVICES_APP_FACTORY_H_