mash: remove AcceleratorRegistrar.

services/ui/public/interfaces/accelerator_registrar.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.
-
-module ui.mojom;
-
-import "services/ui/public/interfaces/event_matcher.mojom";
-import "ui/events/mojo/event.mojom";
-
-interface AcceleratorHandler {
-  OnAccelerator(uint32 id, ui.mojom.Event event);
-};
-
-interface AcceleratorRegistrar {
-  // The AcceleratorHandler is responsible for handling all the accelerators
-  // registered from this AcceleratorRegistrar connection.
-  SetHandler(AcceleratorHandler handler);
-
-  // An AcceleratorHandler must be set before accelerators can be added.
-  AddAccelerator(uint32 id, EventMatcher matcher) => (bool success);
-  RemoveAccelerator(uint32 id);
-};