ash/public/interfaces/client_image_registry.mojom

// Copyright 2018 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.

module ash.mojom;

import "mojo/public/mojom/base/unguessable_token.mojom";
import "ui/gfx/image/mojo/image.mojom";

interface ClientImageRegistry {
  // Tells Ash about an image which the client will later refer to by |token|.
  // This allows clients such as Chrome to repeatedly use or reference the same
  // image without serializing/deserializing every time. If the token already
  // references another icon, this will replace it.
  RegisterImage(mojo_base.mojom.UnguessableToken token,
                gfx.mojom.ImageSkia icon);

  // Tells Ash that the client which registered the given token and its
  // associated image will no longer use the image. This should be called at
  // most once for every unique registered token. In the future, if Ash handles
  // client restart, this will need to be called automatically for crashed
  // clients.
  ForgetImage(mojo_base.mojom.UnguessableToken token);
};