Use mojo app list interfaces for mash and classic ash.

ash/shell/example_app_list_presenter.h

Index: ash/shell/example_app_list_presenter.h
diff --git a/ash/shell/example_app_list_presenter.h b/ash/shell/example_app_list_presenter.h
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+// Copyright 2016 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_SHELL_EXAMPLE_APP_LIST_PRESENTER_H_
+#define ASH_SHELL_EXAMPLE_APP_LIST_PRESENTER_H_
+
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "ui/app_list/presenter/app_list_presenter.mojom.h"
+#include "ui/app_list/presenter/app_list_presenter_impl.h"
+#include "ui/app_list/presenter/test/test_app_list_view_delegate_factory.h"
+
+namespace ash {
+namespace shell {
+
+// An example implementation of AppListPresenter used for ash_shell.
+class ExampleAppListPresenter : public app_list::mojom::AppListPresenter {
+ public:
+  ExampleAppListPresenter();
+  ~ExampleAppListPresenter() override;
+
+  app_list::mojom::AppListPresenterPtr CreateInterfacePtrAndBind();
+
+  // app_list::mojom::AppListPresenter:
+  void Show(int64_t display_id) override;
+  void Dismiss() override;
+  void ToggleAppList(int64_t display_id) override;
+
+ private:
+  mojo::Binding<app_list::mojom::AppListPresenter> binding_;
+  app_list::AppListPresenterImpl app_list_presenter_impl_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExampleAppListPresenter);
+};
+
+}  // namespace shell
+}  // namespace ash
+
+#endif  // ASH_SHELL_EXAMPLE_APP_LIST_PRESENTER_H_